A liquid crystal optical device comprising a pair of substrates provided with electrodes and a layer containing a liquid crystal material sandwiched between the pair of substrates, wherein said layer is formed by irradiating light to a solution of a nematic liquid crystal material and a photo-curable vinyl compound selected so that the refractive index of the resulting cured product agrees to either the ordinary refractive index (no) or the extraordinary refractive index (ne) of the nematic liquid crystal material used, or the refractive index (nx) of the nematic liquid crystal material when it is randomly oriented, held between the pair of substrates provided with electrodes, to cure the photo-curable vinyl compound and fix the resulting phase separation of the nematic liquid crystal material and the cured product.
Optical Devices in Ophthalmology and Optometry: Technology, Design Principles, and Clinical Applications successfully bridges a growing hiatus between the technical principles and clinical applications of optics, fostering understanding and collaboration between clinicians, scientists, and engineers. This unique, interdisciplinary text, based on lectures given by the authors during the last 10 years, is a rich compilation of optical principles underlying past, current, and evolving systems for clinical eye care. The text includes three parts, each with multiple chapters that are followed by questions to assess knowledge. Part One reviews ocular anatomy, optics, and eye disease, Part Two discusses ophthalmic diagnosis and imaging, and Part Three focuses on laser-based ocular therapeutics. The preface includes a useful table recommending specific chapters for engineers, vision scientists, and clinicians.. Part One includes three concise chapters on structure, function, and optics of the human eye; ...
A MEMS optical device includes a MEMS image array and a self-aligned microlens array. The MEMS image array includes a number of individual channels. The microlens array includes individual microlenses, each of which is associated with one of the channels of the MEMS image array. The microlens array is formed directly on the MEMS image array using semiconductor fabrication techniques. Each microlens is automatically aligned with its respective channel within the image array. The need for precise and expensive manual alignment of the MEMS image array and the microlens arrays is avoided. Improvements in the fill factor and the transmission efficiency of the optical device are realized. Further, by tailoring the refractive index of the lens relative to both the substrate and the ambient air, the total internal reflection phenomenon can be exploited, for additional improvement in the transmission efficiency of the optical device.
A microactuator for precisely aligning an optical fiber with an optical device includes a carrier having at least one bimorphic actuator which bends or deflects in response to electrical stimuli to thereby controllably position the carrier and, in turn, an optical fiber mounted on the carrier, with an optical device, such as a laser diode. The bimorphic actuator includes first and second layers of first and second materials, respectively, which respond differently to electrical stimuli. For example, the first and second materials can have different coefficients of thermal expansion or one of the materials can be a piezoelectric material such that application of electrical stimuli to the bimorphic actuator will deflect the actuator by a precisely controllable amount. The carrier can also be mounted on an alignment support structure such that upon deflecting the bimorphic actuator is urged against a portion of the alignment support structure so as to
Optical devices based on Planar Lightwave Circuit (PLC) technology have well been studied due to their inherited advantages from Integrated Circuits (IC), such as: small size, high reliability, mass production and potential integration with microelectronics. Among all the materials, silicon nanowire platform gains more and more interest. The large refractive index difference between core and cladding allows tremendous reduction of the component size. This thesis studies theoretically and experimentally some integrated optical devices based on silicon nanophotonic platform, including echelle grating demultiplexers and photonic crystals.. Some of the numerical methods are introduced first. Scalar integral diffraction method is efficient for calculating the diffraction efficiency of gratings. Beam propagation method and finite-difference time-domain method are also introduced, for simulating the light propagation along the devices.. The fabrication technology and characterization methods are ...
An integrated optical circuit comprising an optical waveguide and an evanescent coupler. The optical waveguide is located on a wafer. The optical waveguide is formed from an upper semiconductor layer of the wafer, a gate oxide layer deposited on the upper semiconductor layer, and a polysilicon layer deposited on the gate oxide layer. The evanescent coupling region is formed at least in part from a gap portion that optically couples light to the upper semiconductor layer of the optical waveguide using the evanescent coupling region. Light can be coupled from outside of the passive optical waveguide device via the evanescent coupling region into the optical waveguide. Alternatively, light can be coupled from the optical waveguide through the evanescent coupling region out of the passive optical waveguide device. The polysilicon layer projects a region of static effective mode index within the optical waveguide, wherein the region of static effective mode index has a different effective mode index than the
The present invention provides improved elastomeric interference films which are readily coextruded, have improved transparency, and have greater mismatches of refractive indices than those of the prior art. An improved elastomeric optical interference film comprising at least 100 alternating layers of at least first and second divergent substantially transparent elastomeric polymeric materials is provided. Adjacent layers of the first and second polymeric materials differ from each other in refractive index by at least about 0.05, and the thickness of the layers is from about 0.05 to about 0.5 micrometers. Stretching the films results in different wavelengths of light being reflected.
Stephen Morgan is Professor of Biomedical Engineering at the University of Nottingham. Since 1992 he has investigated novel optical techniques for imaging and spectroscopy of tissue using techniques such as laser Doppler flowmetry, acousto-optic imaging and hyperspectral imaging. His research involves the development of optical devices to monitor the microcirculation for applications such as wound healing. One example is a laser Doppler blood flow imaging device currently sold by Moor Instruments. His other main research interest is developing novel methods of imaging and sensing for applications in regenerative medicine.. Stephen is a member of the Optics and Photonics research group.. ...
A new classification and regression tool, Random Forest, is introduced and investigated for predicting a compounds quantitative or categorical biological activity.. The most comprehensive introduction to optical communications available anywhere-from the author of Optical Fiber Communications, the fields leading text. Gerd Keiser is founder and president of PhotonicsComm Solutions, Inc., a firm specializing in consulting and education for the optical communications industry.. Indigestion Integration Contest Parties like AAP are social media savvy, but prior to the presidential polls in June, they joined forces with other opposition parties to try and even the odds with BJP in this virtual contest. Passengers will be given a slip to write their. Kraft Foods Inc. was an American multinational confectionery, food and beverage conglomerate. It marketed many brands in more than 170 countries. 12 of its brands. Contest Winners. Long Ideas. Some Acquisition-Related Indigestion, But Expect A. ...
Over the last decade microfluidics has created a versatile platform that has significantly advanced the ways in which micro-scale organisms and objects are controlled, processed and investigated, by improving the cost, compactness and throughput aspects of analysis. Microfluidics has also expanded into optics to create reconfigurable and flexible optical devices such as reconfigurable lenses, lasers, waveguides, switches, and on-chip microscopes. Here we present a new opto-fluidic microscopy modality, i.e., Holographic Opto-fluidic Microscopy (HOM), based on lensless holographic imaging. This imaging modality complements the miniaturization provided by microfluidics and would allow the integration of microscopy into existing on-chip microfluidic devices with various functionalities. Our imaging modality utilizes partially coherent in-line holography and pixel super-resolution to create high-resolution amplitude and phase images of the objects flowing within micro-fluidic channels, which we ...
The massive transfer of data over the Internet that is vital to todays economy in our information society would not be possible without the crucial role played by fibre optics communication. Every time a node of the Internet sends information, it encodes a sequence of digital bits composing the message into light pulses. These light pulses are later sent through an optical fibre to a receiving node that converts the light signal back to the original sequence of bits.. The increase demand for higher data transfer raises the natural question on what are the fundamental physical limits to the information transmission rate over optical links. Raul García-Patrón, former member of the Theory Division of Professor Ignacio Cirac at the Max Planck Institute of Quantum Optics, with collaborators from Pisa, Brussels and Moscow, has recently answered this question (Nature Photonics, 21 September 2014), concluding a research program that started during his Humboldt postdoctoral fellowship at the MPQ ...
The ever-increasing demand for broadband capacity of the global optical communication networks puts enormous requirements on the semiconductor laser used in the optical transmitter. Industrial standard bodies for optical communication project requirements of single-channel data rates as high as 100 Gbit/s around year 2020. This is a significant step with respect to todays technology which is only at the verge of introducing 25 Gbit/s emitters. The preferred light source for these applications is the vertical-cavity surface-emitting laser (VCSEL) which can offer cost- and power-efficient directly modulated operation. However, it has proven extremely difficult to push the modulation bandwidth of VCSELs beyond 30 GHz and radically new device concepts are demanded to meet the upcoming needs. One such new device paradigm consists of the transistor laser which is the fusion of a semiconductor laser and a high-speed heterojunction bipolar transistor (HBT) into a single device, with potential ...
Kista High Speed Transmission lab (Kista HST-Lab) is a laboratory for advanced experimentation on systems and components for high speed optical communication jointly operated by RISE Acreo AB and KTH Royal Institute of Technology. Kista HST-Lab has excellent facilities for experiments on advanced optical transmission systems to meet real life engineering design criteria. Researchers under joint Acreo-KTH Kista HST-Lab has been continuously working with ultrahigh-speed optical communications in both direct detection and coherent systems, and advanced digital/photonic-assisted signal processing. Extensive research has been devoted to mitigation of semiconductor laser phase/frequency noise and equalization enhanced phase noise in coherent fiber optic transmission systems. Latest results published in Scientific Reports (Nature). Achieved high-speed intensity modulation and direct detection system demonstration with higher than 100 Gbps on-off keying (OOK) and 4/8 pulse amplitude modulation (PAM) with ultra
TY - CONF. T1 - Ultra-low-power-consumption heterojunction FET 8:1 MUX/1:8 DEMUX for 2.4-GBPS optical-fiber communication systems. AU - Numata, Keiichi. AU - Fujii, Masahiro. AU - Maeda, Tadashi. AU - Tokushima, Masatoshi. AU - Wada, Shigeki. AU - Fukaishi, Muneo. AU - Ishikawa, Masaoki. PY - 1995/12/1. Y1 - 1995/12/1. N2 - A gallium arsenide 8:1 multiplexer (MUX) and a 1:8 demultiplexer (DEMUX) for 2.4 Gbps optical communication systems have been developed. These LSIs employ a tree-type architecture using 2:1 MUXs/1:2 DEMUXs that is suitable for high-speed and low power operation but requires precise control of clock timing. To ensure timing margins, a new timing generator and clock buffer circuit have been developed. These LSIs operate at over 2.4 Gbps with 150-mW of power consumption at a supply voltage of 0.7 V.. AB - A gallium arsenide 8:1 multiplexer (MUX) and a 1:8 demultiplexer (DEMUX) for 2.4 Gbps optical communication systems have been developed. These LSIs employ a tree-type ...
A simple compact optical device and method for quickly measuring the concentration of CO and CO2, bound to hemoglobin or dissolved in a persons blood using optical techniques which do not require removing a blood sample from the body. It also provides a simple fiber optic device for measuring blood-gas concentrations of critical internal points of the circulatory system such as the aorta.
One of the biggest hurdles in low vision care is coverage of the prescription devices, said Robinson, which places a large burden on patients for out-of-pocket expenses. The clinic receives funding to assist patients who meet financial criteria and is continuing to seek new funding sources to meet the growing need.. And the technology is getting more affordable. While the foundation of low vision care has always been optical devices, technology has been a game changer. With a mobile device in their hands, patients now have access to voice recognition, magnification, GPS and many other apps developed to make their lives easier, Robinson said. We teach them how to take advantage of these tools.. Robinson has begun to implement the clinical research arm of his practice. Working with Vanderbilt Eye Institute investigators and other collaborators, he hopes to study areas that offer better outcomes and treatment, including early intervention, low vision rehabilitative strategies like head-mounted ...
TY - JOUR. T1 - A facile method of synthesizing size-controlled hollow cyanoacrylate nanoparticles for transparent superhydrophobic/oleophobic surfaces. AU - Matsubayashi, Takeshi. AU - Tenjimbayashi, Mizuki. AU - Manabe, Kengo. AU - Kyung, Kyu Hong. AU - Ding, Bin. AU - Shiratori, Seimei. PY - 2016. Y1 - 2016. N2 - Hollow nanoparticles have broad technological implications in a wide range of applications. Particularly, they have attracted great attention as functional coatings in applications such as optical devices, which have an optical transparency derived from a low refractive index. However, creating a facile and versatile method that can accurately control the hollow nanoparticle size has proven extremely challenging. Herein, we report a simple, instantly complete, one-pot method, designated the supersaturated gas-cored instant polymerization (SGCIP) method, to synthesize size-controlled hollow cyanoacrylate nanoparticles (HCNPs). The SGCIP method uses supersaturated gas created by mixing ...
Low vision rehabilitation is like physical therapy after loss of a limb. The end result is maintenance of independence and a sense of self-worth. This rebuilding and reinforcement of the visual foundation is mainly accomplished through identification of goals, introduction to low vision devices, and training. After evaluation by a low vision specialist, specially trained therapists teach daily activities such as safe cooking strategies, proper lighting, labeling techniques, and use of adaptive equipment. Such equipment includes optical devices like prescription magnification glasses, electronic magnifiers, telescopes, and computer magnification software. Non-optical approaches are also introduced, such as large print books, talking books, and scanners that read printed material aloud. Low vision rehabilitation is an important part of the continuum of care following diagnosis of AMD. Such training will help you maintain your quality of life and independence by finding new ways to function and ...
An endoscope system consists mainly of: an endoscope having a solid-state imaging device and an objective optical system that converges an object image on said solid-state imaging device; and a signal processing unit that processes an image signal produced by the endoscope so as to produce a video signal. The objective optical system includes an optical phase modulation member. The optical phase modulation member exhibits a response of 0.2 or more derived from an optical transfer function relative to a spatial frequency on the solid-state imaging device determined based on the Nyquist theorem, that is, a Nyquist frequency, over a wider range of distances than a depth of field offered by an objective optical system not having the optical phase modulation member.
The Spectrometer is an incredibly important and powerful scientific instrument, as it allows analysis of the composition of matter and the structure of atoms, just from the light emitted or absorbed by it. The principle is simple; incident light is bent, or refracted, through an optical device such as a prism or diffraction grating. A spectrum is produced, each wavelength of light refracted by a unique angle. By measuring the angles at which light is refracted, a precise spectrum can be determined. By looking at what spectral lines are missing, otherwise known as an absorption spectrum, the composition of a body that does not emit its own light, such as a gas cloud, can be determined. A spectrometer has applications in many areas of science, including astronomy and analytical chemistry. When combined with a Spectrum Lamp, Spectrometers provide an accessible way to teach this essential area of Physics. Scale: 150 mm diameter circle is fixed, the table and telescope movements are completely
Thanks for their giving, indeed. A UK-based organization that was included in a November Inventors Digest feature on philanthropic agencies and companies has announced the winner of its Beacon Visionary+ Challenge: an innovative device that will improve the quality of life for thousands of people with double vision.. The Lens Slip Occluder, developed by Burton-on-Trent company DHC Informatics Ltd., received £20,000. The Beacon Centre and the University of Wolverhampton, based in the West Midlands, England, teamed to offer the award. Beacon will contribute £10,000 in social investment; the university will add £10,000 worth of consultancy support.. The occluder is an optical device worn over a pair of glasses to improve vision when reading books, magazines or newspapers, watching television or using a computer. It was developed primarily to treat and alleviate diplopia (double vision). However, it can also be effective in treating visual disturbances caused by conditions such as multiple ...
INTRODUCTION TO THE HISTORY OF LENSES AND VISUAL CORRECTIONS: A REFERENCE TO SPAIN AND THE SPANISH COLONIES IN THE NEW WORLD (XV-XVI C.) Mar a Luisa Calvo*, Departamento de ptica, Facultad de Ciencias F sicas, Universidad Complutense de Madrid, Madrid, Espa a; Jay M. Enoch**, School of Optometry, University of California, Berkeley, USA ABSTRACT. Archaeological optics is a branch of science studying the early history of lenses, optical devices and introduction of visual corrections from ancient civilizations up to our modern world. The first known lenses were located in Egypt, (ca 2600 BC). There are well documented studies of discoveries adressing the early use of corrective lenses. However, little information exists relative to discoveries relating to early lens and mirror use in the American continent. We address early use of corrective lenses in Spain and in the Spanish Colonies in the New World, emphasizing the XV-XVI centuries. We report documents obtained from the Archives of the Indias, ...
Nanonex is the inventor of nanoimprint lithography , the world s first nanoimprint lithography company, and the world s leading provider of nanoimprint solutions that include equipment, masks, resists and processes. Nanonex s patented and proprietary nanoimprint lithography (NIL) solutions and Air-Cushion PressTM can manufacture 3D nanostructures with sub-5 nm resolution, large-area uniformity, accurate overlay alignment, high throughput, and low cost. Nanonex NIL solutions have been adopted by a broad spectrum of industry applications, such as optical devices, data storage, displays, light emitting diodes, semiconductor ICs, biotech, chemical synthesis, and advanced materials. Nanonex has over 100 customers and an installed base of more than 40 tools world-wide ...
Optics. A dispersion of light into colours upon passage through a prism. The dispersion of white light into different colours has already been examined by NEWTON. Each student is this observation known by e.g. a rainbow. The definition of three primary colours resulting from the spectrum allows afterwards also the understanding of origin of colours by adding colours, e.g. on a monitor. In the present experiment, the white light of a bulb is dispersed with a flint glass prism and the spectrum imaged on a screen. By using elements on an optical bench for demonstration, which can also be used for student experiments, it is possible to let students work parallel on this topic, as they easily recognize these optical devices. ...
Item Description: Hanna Instruments HI96832 Digital Propylene Glycol Refractometer * Digital refractometer for extremely fast and accurate results * Optical device measures Propylene Glycol Concentration in Water, Freeze Point in C and Sample Temperature * Displays results in just seconds Designed for Broad Range Pr
Nanoparticles comprising tungsten, methods of manufacturing nanoparticles comprising tungsten, and applications of nanoparticles comprising tungsten, such as electronics, optical devices, photonics, reagents for fine chemical synthesis, pigments, and catalysts are provided.
It is really important to be savvy how to SAFELY observe a solar eclipse, for what youre playing with is sun and hence there shant be any mistakes at all, for they would lead to irreversible damage to your eye. You should never directly look at the sun with the naked eye or with some optical devices such as telescopes binoculars. During a total solar eclipse, there are 3 phases which are the phase of totality and the ones before and after totality. However it is safe to view the solar eclipse without any filters, ONLY when there is the short phase of totality. It is imperative that safely precautions must be adhered to during the other 2 phases. One common solution is using the welders goggles/ glasses with the rating 14 or higher, as they screen out the harmfulness.One of the safest methods on the other hand is the indirect projection. The image of the sun is projected onto a white piece of paper using binoculars (with one side covered), a telescope or another piece of cardboard which has ...
It is really important to be savvy how to SAFELY observe a solar eclipse, for what youre playing with is sun and hence there shant be any mistakes at all, for they would lead to irreversible damage to your eye. You should never directly look at the sun with the naked eye or with some optical devices such as telescopes binoculars. During a total solar eclipse, there are 3 phases which are the phase of totality and the ones before and after totality. However it is safe to view the solar eclipse without any filters, ONLY when there is the short phase of totality. It is imperative that safely precautions must be adhered to during the other 2 phases. One common solution is using the welders goggles/ glasses with the rating 14 or higher, as they screen out the harmfulness.One of the safest methods on the other hand is the indirect projection. The image of the sun is projected onto a white piece of paper using binoculars (with one side covered), a telescope or another piece of cardboard which has ...
SWAROVSKI OPTIKs dG is the first long-range optical device with automatic animal identification. Students and educators get the dG -15% in our online store.
In this study, the use and advantages of balanced detection (BD) in spectral domain optical coherence tomography (SD-OCT) are demonstrated. A-scans are calculated as a combination of two phase-opposed interferometric spectra acquired simultaneously by using a multiline single camera spectrometer. Not only does this system suppress artifacts due to autocorrelation, but also the signal of interest is increased by a factor of 2 as experimentally verified. Our BD-based SD-OCT gives a signal-to-noise ratio improvement of 8-14 dB for the peak within 1 mm compared to standard SD-OCT using a single detection scheme. This method is validated by experimental measurement of a glass plate.. © 2012 Optical Society of America. Full Article , PDF Article ...
Optical systems have such broad applications that they can be found in countless scientific disciplines, industry, and everyday life. Many scientists and engineers whose work involves optical systems can use commercial off-the-shelf systems or build an optical system from the level of optical components. However, scientists and engineers who need to build customized optical systems must be able to understand the working principles of these systems and the components they comprise. With this requirement in mind, the goal of this book is to guide readers in acquiring an understanding of how and why optical systems and their related optical components work. The prerequisite for understanding optical systems is for readers to understand the optical theories involved in the systems. Then, armed with this understanding of the theory, readers can learn to analyze and understand these systems by studying some practical optical systems. An understanding of optical theories together with an examination of ...
The field of optogenetics encompasses tools and techniques involving the use of light to control and monitor activity of excitable cells, such as the human brain and heart. These cells are genetically modified to express one or more light-sensitive proteins. This project will develop an all-optical electrophysiology system that will allow researchers to tailor conductances and other biophysical properties of a cell or groups of cells using light.. To realize the full potential of optical voltage clamp, the research team will develop synthetic light activated molecules that will serve as molecular electrodes and design a microscope with automated feedback control of illumination. Resulting technology has the potential to be a game changer in the field of optogenetics and the development of future therapeutics. For instance, this all-optical electrophysiology method will allow high-throughput screening of drugs for excitability. The promise of optogenetics is also expected to have a profound ...
Caspary lives interdisciplinary work in his own everyday research. The scientist first completed a degree in physics at the University of Heidelberg. But he wrote his doctoral thesis in electrical engineering at the Technical University of Braunschweig. The current PhoenixD board member, Professor Dr Wolfgang Kowalsky, was once his doctoral supervisor. Caspary is particularly interested in optical communications technology, i.e. data transmission via optical fibres. Before PhoenixD, he was head of the Fluoride Glass Technology and Fiber Lasers group at the Institute for High-Frequency Technology at the Technical University of Braunschweig. There he worked on the development of novel optical fibres and fibre lasers. The technology coordinator is also involved in teaching: His first lecture at Leibniz Universität Hannover was devoted to applied wave optics. I like teaching because I learn a lot myself, says the 51-year-old. Teaching forces reflection and reflection is always helpful. ...
AbstractOptical technologies are essential for the rapid and efficient delivery of health care to patients. Efforts have begun to implement these technologies in miniature devices that are implantable in patients for continuous or chronic uses. In this review, we discuss guidelines for biomaterials suitable for use in vivo. Basic optical functions such as focusing, reflection, and diffraction have been realized with biopolymers. Biocompatible optical fibers can deliver sensing or therapeutic-inducing light into tissues and enable optical communications with implanted photonic devices. Wirelessly powered, light-emitting diodes (LEDs) and miniature lasers made of biocompatible materials may offer new approaches in optical sensing and therapy. Advances in biotechnologies, such as optogenetics, enable more sophisticated photonic devices with a high level of integration with neurological or physiological circuits. With further innovations and translational development, implantable photonic devices offer a
RADIO OVER FIBER AIM OF PROJECT The discussion of the concepts of radio over fiber technology and its techniques for transporting radio signals over optical fiber 1. RADIO WAVE Radio waves propagate (travel) much like surface water waves. They travel near the Earths surface and also radiate skyward at various angles to the Earths surface. As the radio waves travel, their energy spreads over an ever components, a crest (top portion) and a trough (bottom portion). These components travel outward from the transmitter, one after the other, at a constant velocity (speed). The distance between successive wave crests is called a wavelength Fig (1) Freq. and wavelength The electromagnetic wave spectrum is shown in Figure 2.the part usable for radio communication ranges from below 10 kHz to over 100 GHz 1. RADIO WAVE Figure 2: The radio frequency spectrum 2. OPTICAL COMMUNICATION A communication system transmits information from one place to another, whether separated by a few kilometers. Information ...
Mode-locked fibre lasers generating ultrashort pulses with the advantages of robustness, compactness and excellent beam quality are of tremendous interest in applications such as laser material processing, medicine, precision measurement, biological photonics, ultrafast spectroscopy, optical communication and scientific research. In recent decades, mode-locked ultrafast fibre lasers operating in the near-infrared and mid-infrared spectral regions have been well developed, but ultrafast laser sources in the visible spectral region (380-760 nm) still heavily rely on Ti:sapphire mode-locked oscillator and optical parametric amplification systems (or frequency doubling of near-infrared ultrafast lasers), suffering from a large footprint and an extremely high cost. Researchers desire an alternative ultrafast visible laser solution that is compact, low cost, user friendly and maintenance free. Passive mode locking in all-fibre format could satisfy all these demands, and therefore, there is strong ...
John Fourkas, a chemistry professor at the University of Maryland, and his research team have developed materials and nanofabrication techniques to build miniaturized versions of components needed for sensors, medical diagnostics and other applications.. This approach allows for faster analysis at a lower cost with small sample volumes. The materials provide simultaneous 3D manipulation of microscopic objects using optical tweezers and a unique method for lithography, which is the process of using light in etching silicon or other substrates to create electronic components. These techniques allow complex 3D structures to be created from many microscopic components.. Previous work by this UMD research team found a breakthrough in the use of visible light for making small structures for applications including optical communications, cell behavior control and the manufacturing of integrated circuits.. Fourkas said, One of the exciting aspects of this set of techniques is that it is compatible with ...
The World Radiocommunication Conference 2012 (WRC 2012) will review and endorse global allocations of spectrum to ensure that this most precious resource is used effectively to the benefit of ITU Member States, radio-frequency spectrum and mobile phone users everywhere. ITU-R is also continuing its studies on emerging technologies such as cognitive radio, short-range devices and free-space optical communication systems, to ensure that all ITU Member States benefit from the latest technological developments and be able to operate these systems within an optimized global regulatory framework ...
InGaAs photodiodes for near-infrared light detection. Features include high speed, high sensitivity, low noise, and spectral responses ranging from 0.5 μm to 2.6 μm. Suitable for a wide range of applications including optical communication, analysis, and measurement.
0054] Referring to FIG. 11, alternatively, radiation source 22 may include a single radiation source that produces multiple ranges of wavelength, which may be selectively controlled to impinge upon substrate 32 sequentially or concurrently. An exemplary radiation source 22 consists of a single broad spectrum radiation source 90 that produces UV and IR radiation, which may consist of a mercury (Hg) lamp. To selectively impinge differing types of radiation upon substrate 32, a filtering system 92 is utilized. Filtering system 92 comprises a high pass filter (not shown) and a low pass filter (not shown), each in optical communication with radiation source 90. Filtering system 92 may position the high pass filter (not shown) such that optical path 88 comprises IR radiation or filtering system 92 may position the low pass filter (not shown) such that optical path 88 comprises UV radiation. The high pass and low pass filters (not shown) may be any known in the art, such as interference filters ...
http://www.lens.unifi.it/. First, the Wright research group at the University of Wisconsin-Madison presents its research using narrow frequency distribution of tunable laser sources to gain spectral selectivity in an analytical measurement (1). Along with a summary of its research and techniques, this website offers a great introduction to the fundamentals of non-linear spectroscopy. The second site describes the Ernest Orlando Lawrence Berkeley National Laboratorys success in observing non-linear spectra from chiral molecules (2). With the help of a pictorial poster, users can understand the complex issues of chiral vibrations and spectra. Next, the Sasada lab at Keio University summarizes its research interests in optical communications (3 ). Visitors can find diagrams illustrating absolute frequency difference measurements and the techniques used in the work. The fourth website describes the Regional Laser and Biomedical Technology Laboratories (RLBL) of the University of Pennsylvanias ...
EECS 285B Lasers and Photonics (Credit Units: 4) Covers the fundamentals of lasers and applications, including Gaussian beam propagation, interaction of optical radiation with matters, and concepts of optical gain and feedback. Applications are drawn from diverse fields of optical communication, signal processing, and material diagnosis. (Design units: 0) ...
Define local oscillator laser: In coherent optical communications systems, a laser used at the receiving end to produce a steady wave that is combined...
TY - GEN. T1 - Instability of silicon photonic wavelength tunable laser diodes due to the nonlinear optical effect of silicon. AU - Kita, Tomohiro. AU - Yamada, Hirohito. PY - 2016/12/2. Y1 - 2016/12/2. N2 - The silicon photonic wavelength tunable laser diode is a good candidate for the integrated light source of the digital coherent optical communication system.However, optical nonlinear effects easily occur due to the strong light confinement of Si photonic wire waveguides. The impact on laser operation caused by nonlinearity was discussed.. AB - The silicon photonic wavelength tunable laser diode is a good candidate for the integrated light source of the digital coherent optical communication system.However, optical nonlinear effects easily occur due to the strong light confinement of Si photonic wire waveguides. The impact on laser operation caused by nonlinearity was discussed.. KW - Nonlinear optical effect. KW - Ring resonator. KW - Silicon photonics. KW - Wavelength tunable laser ...
13. A single mode optical fiber, comprising:a first central region defining a radius r1, said first central region having a maximum refractive index value n1.sub.max and a minimum refractive index value n1.sub.min; anda second ring surrounding said first central region, wherein said second ring has a substantially constant refractive index value n2 that is less than the minimum refractive index value n1.sub.min of said first central region;wherein the refractive index value of said first central region decreases from the central axis of symmetry in said first central region in a radial direction over a distance equal to the radius r1, the refractive index value decreasing from n1.sub.max to n1.sub.min in a substantially linear fashion, whereby said first central region is substantially free of a portion having a constant refractive index value, and wherein the decrease takes place in accordance with the following equation: slope = ( D 1 max - D 1 min ) / ( r 1 ) , wherein 0.13 , slope , 0.19 , D ...
A study by Triton Market Research with the title Global Silicon Photonics Market, covers the Global Analysis and Forecast for 2019-2028 by Components (Interconnects, Optical Modulators, LED, Waveguides, Wavelength Division Multiplexer Filters, Photodetector), by Product Type (Optical Transceiver, Sensors, Photovoltaic Cells/Solar Cells, Integrated Circuits, Optical Switches), by Application (Telecommunication, Information Processing, Other Application), and by Geographical Region (North America, Middle East and Africa, Latin America, Europe, Asia-Pacific).. Silicon photonics is a novel technology used to manufacture optical devices from silicon. It makes use of photons to transfer huge amounts of data at high speed, using extremely low power.. Request Free Sample of the Global Silicon Photonics Market Report @ https://www.tritonmarketresearch.com/reports/silicon-photonics-market#request-free-sample. As per the report, the global silicon photonics market will account for revenue worth $3294.55 ...
Weve developed a comprehensive training program to meet the needs of fiber optic contractors, installers, designers, and end users. Courses include hands-on installation and design classes for data centers and local area networks.
The third edition of this popular text and reference book presents the fundamental principles for understanding and applying optical fiber technology to sophisticated modern telecommunication systems.. Optical-fiber-based telecommunication networks have become a major information-transmission-system, with high capacity links encircling the globe in both terrestrial and undersea installations. Numerous passive and active optical devices within these links perform complex transmission and networking functions in the optical domain, such as signal amplification, restoration, routing, and switching. Along with the need to understand the functions of these devices comes the necessity to measure both component and network performance, and to model and stimulate the complex behavior of reliable high-capacity networks.
Organic-inorganic hybrid sol-gel materials have attracted increasing attention in recent years as low-cost, rugged materials for integrated optical devices such as optical couplers, splitters, and electro-optic modulators. These materials can be easily processed by spin-coating, wet-etching photolithography, and low-temperature baking. Precise control of waveguide core-cladding refractive indices produces well-confined low-loss propagation and good matching of the absolute refractive index to that of fused silica results in low optical coupling loss to optical fiber. The increased thermal and mechanical stability of these materials, relative to optical polymers, results in numerous packaging options and improved reliability. However organic-inorganic hybrid sol-gel materials have not yet been often used as host of active dopants such as erbium (III) ions for 1550nm optical amplification. This limitation owes primarily to matrix and chelate dominated nonradiative relaxation processes, as high ...
The development of optical fibers has revolutionized not only telecommunications but also the way monitoring and sensing is conducted, particularly in remote or harsh environments. In this context, the discovery of photosensitivity in optical fibers led to the establishment of fiber Bragg gratings (FBGs), optical filters that have been widely employed in telecom and as measurement elements.. This Tutorial Text discusses these optical devices directly, focusing on the practical aspects and applications. It addresses the fundamental aspects of FBG operation to quickly introduce the subject to students, engineers, and laboratory technicians. Due to their inherent advantages in instrumentation, sensing, and automation systems, FBGs play an important role not only for industry professionals but also for academics. Thus, this book is primarily intended for scientists, professors, researchers, students, photonics technicians, and engineers involved in optical-fiber projects. The chapters follow a ...
Producing semiconductor lasers on a silicon wafer is a long-held goal for industry, but their fabrication has proved challenging. Now, researchers at the Data Storage Institute (DSI) of Singapores Agency for Science, Technology and Research (A*STAR) say that they have developed a way to manufacture them that is cheap, simple and scalable (Chee-Wei Lee et al, Fabrication and Demonstration of III-V/Si Heterocore Microcavity Lasers via Ultrathin Interlayer Bonding and Dual Hard Mask Techniques, ACS Photonics (2016) 3 (11), p2191). Hybrid silicon lasers combine the light-emitting properties of group III-V semiconductors like gallium arsenide and indium phosphide with the maturity of silicon manufacturing techniques. Such lasers are attracting attention as they promise inexpensive, mass-producible optical devices that can integrate with photonic and microelectronic elements on a single silicon chip. They have potential in a wide range of applications, from short-distance data communication to ...
As a UCI professor for 34 years and Associate Dean for Graduate Studies and Research in the UCI School of Physical Sciences, Roger McWilliams brings an unusual breadth of experience. He adheres to a philosophy that creating new high tech tools simultaneously makes opportunities for basic research and industry. McWilliams research has emphasis in plasma physics of electrically-charged particles, lasers, and optical devices. His work on charged particle beams has been used for plasma processing in semiconductor fabrication (cell phones and computers) and proton therapy cancer treatment. He has developed lasers that are used routinely in laser eye surgery and optical fiber telecommunications (internet lines). His research has also played a role in electrosurgery tools produced by several companies.. McWilliams joined Irvine as an Assistant Professor in 1980 while completing his Princeton University Ph.D. studies. His physics bachelors degree in 1975 from UCI provided excellent perspective of the ...
The printhead must have heating capability to print any material influenced by viscosity changes. Oil based inks are sensitive to temperature. Waxes and hot-melt materials are solids at room temperature. It is even possible to print with metallic alloys such as lead, tin, indium, zinc and aluminium. The process of printing of low-melting point metals is called direct melt printing and was introduced in 1971 by Johannes F Gottwald patent, US3596285, Liquid Metal Recording with a Continuous inkjet (CIJ) long before any form of 3D Printing was ever considered. Thermoplastic DOD inkjets print at or above the piezoelectric Curie temperature and must be continuously poled to work. Piezo D33 displacement had to be optimized to lower drive voltages. See Piezoresponse force microscopy (PFM) for relevant theory. Prior research in 1980 by James McMahon about the six piezo physical poling states and tests to maximize piezo resonant and anti-resonant frequencies sped up the development time. Howtek, ...
TY - JOUR. T1 - Nanocrystalline Titania Made from Interactions of Ti with Hydrogen Peroxide Solutions Containing Tantalum Chloride. AU - Wu, Jin Ming. AU - Hayakawa, Satoshi. AU - Tsuru, Kanji. AU - Osaka, Akiyoshi. PY - 2002/3/1. Y1 - 2002/3/1. N2 - Crystalline titania film and powders with crystallite size in the range of nanometers are of great interest in the fields of optical devices, gas sensors, catalysts, and biomaterials. This paper reports a soft solution approach to prepare crystalline titania. After Ti was soaked in hydrogen peroxide solutions containing 3.0 mM tantalum chloride at 80°C for 3 days, crystalline titania films consisting of anatase and rutile were deposited on Ti substrates. While Ti was soaked in tantalum-free hydrogen peroxide solution followed by aging in hydrogen peroxide solution containing tantalum ions, titania films with well-crystallized anatase were obtained. The crystalline titania resulted from crystallization of the previously deposited amorphous gel. ...
An OPTICIAN is a technician who has completed a two-year combination of study and work experience with optical appliances. Opticians may supply, prepare and dispense optical appliances, including corrective eyeglasses based on a prescription from an optometrist or ophthalmologist. In some states, with additional training, an optician can be licensed to fit and dispense contact lenses.. An OPTOMETRIST is a doctor who has completed a undergraduate bachelors degree and an additional four years for a Doctor of Optometry degree. Optometrists are primary care practitioners who examine, assess and diagnose disorders of the eye, visual system and associated structures, as well as diagnose related systemic conditions. Optometrists provide and prescribe treatment, management, and correction for the eyes and visual system. This includes, but is not limited to, the fitting and dispensing of eyeglasses, contact lenses, and other optical devices; vision therapy; prescription medications for the eye; and ...
An integrated optical waveguide type surface plasmon resonance (SPR) sensor having an optical waveguide with a corresponding SPR sensing area, photodetectors, and wavelength tunable laser or any kind of external tunable laser source/coupler formed on a substrate. In an embodiment, the laser is a wavelength tunable laser and optionally, the integrated device may include a power source on the substrate for providing a electric power to the wavelength tunable laser and the photodetectors, or a circuit for signal processing, or a microfluidic structure for routing a target sample to the SPR sensor area. The microfluidic structure optionally includes a mixer or a reaction chamber for mixing and allowing a physical or chemical reaction to occur, respectively. In an embodiment, plural planar integrated optical waveguide type SPR sensors may be fabricated on a substrate to form an array of SPR sensors.
This work aims to explore the application of type II QW materials based on antimonides, lattice matched to InP-substrates, for high performance optoelectronic devices in the 1.2 - 1.6 micron optical communication window. The project aims to demonstrate the feasibility of this approach by working with the EPSRC central facility at Sheffield in support of their establishment of the materials capability, by providing high frequency optical performance characterisation of simple test structures. The work will provide an initial assessment of feasibility. ...
Industrial gases company, BOC, has been awarded a long-term contract to supply Shanghai Worldbest OFIB Technology (Worldbest), the newly established optical communication division of Shanghai Worldbest (SWC).. BOC will supply Worldbest with bulk and cylinder quantities of helium, hydrogen, nitrogen, oxygen, carbon dioxide and argon.. SWC was established by the Chinese government to further the development of the China Worldbest Yangtze River Industrial Corridor, a major Chinese science and industry trade zone.. Construction of Worldbests optical fibre drawing site in XinHe Town, Chongming County, Shanghai, is nearing completion. When finished later this year, it will become SWCs production base for single mode, multi-mode and special optical fibres with an annual production capacity of two million fibre kilometres.. BOC is also the primary industrial gases supplier for two of Chinas other major industrial parks, the Suzhou Industrial Park (SIP) and the Suzhou New District (SND).. Neil ...
Redfern Integrated Optics. Short Description about Photonics Market: Photonics is one of the fastest growing high-tech industries in the world today. It includes optical communications (e.g., fiber optics, lasers, and infrared links), optical imaging (e.g., spy and weather satellites, night vision, holography, flat screen display, and CCD video cameras), optical data storage and optical computing (e.g., CD s and DVD s), optical detectors (e.g., supermarket scanners, medical optics, and nondestructive evaluation of materials), lasers (e.g., welding lasers, laser surgery, laser shows, and laser rangefinders), spectroscopy (e.g., chemical and biological detection, anti-terror detection) and quantum optics (e.g., quantum teleportation, quantum cryptography, and single-photon optics).. Scope of the Photonics Market Report :. In 2019, The Worldwide Photonics market size was USD 622930 million and it is expected to reach USD 966300 million by the end of 2026, with a CAGR of 6.4% during ...
The IET organises a range of international conferences, seminars and exhibitions each year. The conferences cover all aspects of electrical, electronic, manufacturing and systems engineering, and related sciences. Proceedings of all conferences are published after each event. Conferences from 1994 up to the present are available on the IET Digital Library as part of the IET Digital Library Complete Publications Package. Seminar publications and digests are collections of condensed information relating to presentations at IET colloquia and seminar events. They are sometimes in the form of speakers hand-outs or copies of the slide show presentation ...
Its the very first germanium laser capable of emitting wavelengths useful for optical communications. Its also the first operable at roo
Manufacturer: Corning Optical Communications Connector Type: SC Fiber Type: Multimode 62.5 micron OM1 Termination Style: Pre-polished Cam Ferrule Type: Ceramic Buying in volume? Please contact us about project pricing.
Roberto Proietti,1 Xiaoliang Chen,1 Kaiqi Zhang,1 Gengchen Liu,1 M. Shamsabardeh,1 Alberto Castro,3 Luis Velasco,2 Zuqing Zhu,4 and S. J. Ben Yoo1 1R. Proietti (e-mail: [email protected]), X. Chen, K. Zhang, G. Liu, M. Shamsabardeh, and S. J. B. Yoo are with the Department of Electrical and Computer Engineering at the University of California, Davis, California 95616, USA. 2L. Velasco is with the Optical Communications Group (GCO) at Universitat Politècnica de Catalunya (UPC), Barcelona, Spain. 3A. Castro was with University of California, Davis, California, USA at the time of this work. He is now with the Engineering School at the Universidad de la República, Montevideo, Uruguay. 4Z. Zhu is with the School of Information Science and Technology, University of Science and Technology of China, Hefei, Anhui 230027, China. ...
TY - GEN. T1 - Crumple nanostructuring of atomically thin 2D materials for flexible optoelectronic devices and plasmonic metamaterials. AU - Kang, Pilgyu. AU - Wang, Michael Cai. AU - Knapp, Peter M.. AU - Kim, Kyoung Ho. AU - Park, Hong-Gyu. AU - Nam, Sung Woo. PY - 2019/1/1. Y1 - 2019/1/1. N2 - Atomically-thin two-dimensional (2D) materials including graphene and transition metal dichalcogenide (TMD) atomic layers (e.g. Molybdenum disulfide, MoS2) are attractive materials for optoelectronic and plasmonic applications and devices due to their exceptional flexural strength led by atomic thickness, broadband optical absorption, and high carrier mobility. Here, we show that crumple nanostructuring of 2D materials allows the enhancement of the outstanding material properties and furthermore enables new, multi-functionalities in mechanical, optoelectronic and plasmonic properties of atomically-thin 2D materials. Crumple nanostructuring of atomically thin materials, graphene and MoS2 atomic layers ...
Government Contract Award: A--Space Based Optical Sensor Calibration Approaches. Access many more A - Research and Development Awards | Get your Free Government Bids Alert!
There have been numerous breakthroughs in the scientific and technological use of magnetic fields during the past decades, yet the detection of smallest magnetic fields with highest spatial resolution at room temperature has proven to be a great scientific challenge.. To date, existing magnetic sensors are of limited use for industrial applications due to their high costs and the technical effort required, such as cooling. Especially for the imaging of fields created by only a few moving electrons, existing magnetometers are not sensitive enough at room temperature and do not possess the required spatial resolution.. Two complementary systems to tackle the challenges. The QMag consortium has set itself the goal of bringing quantum magnetometry from laboratory to application and making it usable in industry. In order to do so, the Fraunhofer Institutes will develop two complementary magentometers which are able to measure smallest magnetic fields and currents with highest spatial resolution, ...
The Europe Acousto-Optic Modulator 2016 Market Research Report Enterprise wide License is a professional and in-depth study on the current state of the...
This paper aims to study and analyze the electromagnetic propagation in media with negative transverse permeability and how this leads into some physical phenomena such as the appearance of backward waves and the propagation below cutoff. This study is done through the use of metamaterials of split ring resonators. It is shown that the waveguide dimensions needed to transmit a certain frequency band, can be miniaturized to half its dimension. The analytical determination of the propagation inside a waveguide in the presence of two slabs with dielectric permittivity and negative transverse permeability is derived. Finally it is shown by simulation, how to obtain a backward wave with lower loss than reported earlier in the literature.
A photodetector comprising a contact layer; an absorbing region positioned such that light admitted passes into the absorbing region; a diffractive region comprising at least one diffractive element operating to diffract light into the absorbing region; the configuration of the photodetector being determined by computer simulation to determine an optimal diffractive region and absorbing region configuration for optimal quantum efficiency for at least one predetermined wavelength range, the diffractive region operating to diffract light entering through the contact layer such that phases of diffracted waves from locations within the photodetector including waves reflected by sidewalls and waves reflected by the diffractive elements form a constructive interference pattern inside the absorbing region. A method of designing a photodetector comprises using a computer simulation to determine an optimal configuration for at least one wavelength range occurring when waves reflected by the diffractive element
Large Venue. The DLP Projector report does the thorough study of the key industry players to understand their business strategies, annual revenue, company profile and their contribution to the global DLP Projector market share. Diverse factors of the DLP Projector industry like the supply chain scenario, industry standards, import/export details are also mentioned in Global DLP Projector Market 2017 report.. Key Highlights of the DLP Projector Market:. A Clear understanding of the DLP Projector market based on growth, constraints, opportunities, feasibility study.. Concise DLP Projector Market study based on major geographical regions.. Analysis of evolving market segments as well as a complete study of existing DLP Projector market segments.. Discover More About Report Here: http://qyresearch.us/report/global-dlp-projector-market-2017/56032/. Furthermore, distinct aspects of DLP Projector market like the technological development, economic factors, opportunities and threats to the growth of DLP ...
During upstream bioprocess development, a high producing production organism is selected, an appropriate growth media is formulated, and optimal bioreactor growth conditions and cultivation schemes are established. Hundreds of experiments must be carried out to accomplish these objectives. The first aspect of my dissertation research was to improve the tools available for carrying out this multitude of development experiments. First, optical sensors for dissolved oxygen (DO) and pH were compared to traditional electrochemical probes during hybridoma cell culture in a 5 L bioreactor. There was a 98.7 and 99.7% correlation between our DO and pH optical sensors and the electrochemical probes, respectively, throughout the duration of the experiment. These optical sensors were also employed in a high throughput bioreactor (HTBR) system capable of simultaneously carrying out twelve 35 ml cell culture experiments. We validated the HTBR for use in process change studies by testing bioreactor ...
During upstream bioprocess development, a high producing production organism is selected, an appropriate growth media is formulated, and optimal bioreactor growth conditions and cultivation schemes are established. Hundreds of experiments must be carried out to accomplish these objectives. The first aspect of my dissertation research was to improve the tools available for carrying out this multitude of development experiments. First, optical sensors for dissolved oxygen (DO) and pH were compared to traditional electrochemical probes during hybridoma cell culture in a 5 L bioreactor. There was a 98.7 and 99.7% correlation between our DO and pH optical sensors and the electrochemical probes, respectively, throughout the duration of the experiment. These optical sensors were also employed in a high throughput bioreactor (HTBR) system capable of simultaneously carrying out twelve 35 ml cell culture experiments. We validated the HTBR for use in process change studies by testing bioreactor ...
Low porosity titania forms containing only a small amount of hydroxyl groups and possessing a high refractive index which are property stable regardless of humidity level and which prohibit electrical and gas leakage and optical loss, are obtained in a sol-gel process by rapidly heating to curing temperature, e.g. at a rate of 8000 C./min. One application provides more stable, longer-lasting sol-gel prepared optical interference filters. Other applications provide capacitors with high capacitance and optical planar waveguides.
Chrysiridia rhipheus, or Urania ripheas, is a day-flying moth of the family Uraniidae. It is considered one of the most impressive and appealing-looking lepidopterans. Its very colorful, though the iridescent parts of the wings do not have pigment; rather the colors originate from optical interference. This specimen
A multifunctional lab-on-a-chip platform for spectroscopic analysis of liquid samples based on an optofluidic jet waveguide is reported. The optofluidic detection scheme is achieved through the total internal reflection arising in a liquid jet of only 150 μm diameter, leading to highly efficient signal excit
The objective of this Phase I is to develop a novel 65-GHz bandwidth photodetector with high sensitivity between 900-1600 nm. This detector will have a response time of 5 ps, making it the fastest near-IR photodetector available. It will have a responsivity of 0.2 A/W and dark current < 50 nA, with an active area of 50x50 square micrometers. It will also be capable of generating signals with amplitudes exceeding 1 volt into 50 ohms. This detector will function like a photoconductor instead of a photodiode. Its speed will be derived from deep-level traps that form in InGaAs when grown under non-stoichiometric molecular-beam-epitaxy conditions. This technique has been applied by us to non-stoichiometric growth of GaAs to yield a 400-900 nm, metal-semiconductor-metal detector with 0.1 A/W sensitivity and 1 ps response time. This is the fastest visible photodetector in the world. During this Phase I we will develop the non-stoichiometric growth conditions for InGaAs. We will also use a newly ...
A major impediment to improving the treatment of concussion is our current inability to identify patients that will experience persistent problems after the injury. Recently, brain-derived exosomes, which cross the blood-brain barrier and circulate following injury, have shown great potential as a noninvasive biomarker of brain recovery. However, clinical use of exosomes has been constrained by their small size (30-100 nm) and the extensive sample preparation (|24 hr) needed for traditional exosome measurements. To address these challenges, we developed a smartphone-enabled optofluidic platform to measure brain-derived exosomes. Sample-to-answer on our chip is 1 hour, 10x faster than conventional techniques. The key innovation is an optofluidic device that can detect enzyme amplified exosome biomarkers and is read out using a smartphone camera. Using this approach, we detected and profiled GluR2+ exosomes in the post-injury state using both in vitro and murine models of concussion.
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Method and system for ultrasound imaging of body tissue in which a focused ultrasound (FUS) transducer (|b|20|/b|) is oriented relative to the body such that ultrasonic waves generated by the FUS tran
10 coolest examples of augmented reality (ar) applications that you will find useful whether you are just you probably know some examples of augmented reality apps like snapchat and pokemon go. Heres a list of some of the brands to create. The tech, called tactical augmented reality (tar), is essentially an eyepiece that helps soldiers precisely locate their positions as well as the locations of others-both friend and foe. ...
TechNavios analysts forecast the Global Augmented Reality market to grow at a CAGR of 54.3 percent over the period 2012-2016. One of the key factors contributing to this market growth is the increasing demand for enhanced user experience. The Global Augmented Reality market has also been witnessing increasing partnerships or tie-ups between startups of this market and major players in the complementary markets. However, the inferior image quality of the objects captured by the augmented reality applications could pose a challenge to the growth of this market ...
TY - JOUR. T1 - Optical, electro-optic and optoelectronic properties of natural and chemically modified DNAs. AU - Kwon, Young Wan. AU - Hoon Choi, Dong. AU - Jin, Jung Il. PY - 2012/12. Y1 - 2012/12. N2 - This article reviews recent findings on the optical, electro-optic and optoelectronic properties of natural and modified DNAs. When the sodium (Na +) ions of DNA are replaced with long alkyl quaternary ammonium (Q+) ions, the resulting compositions (Q+ DNA- ) are organic-soluble, and thin films produced using these materials reveal many interesting optical and optoelectronic properties. These films tend to form well-structured supramolecular assemblies. In contrast, natural DNAs are water-soluble and hygroscopic. DNAs are strong absorbers of UV wavelengths in the region of 260 nm. The Q+ DNA films are excellent dielectrics that can be utilized as insulating layers in organic thin film transistors. Chemical modification of the Q+ parts results in many interesting structures that can be used in ...