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High-resolution transmission electron microscopy and in situ measurements reveal that the welds are nearly perfect, with the same crystal orientation, strength and electrical conductivity as the rest of the nanowire. (imechanica.org)
Using an in situ TEM nanomanipulator with specialty scanning probe microscopy tips, we can simultaneously measure transport properties - such as electrical contact resistance and heat transfer. (pitt.edu)
We are developing environmental scanning transmission electron microscopy (ESTEM) measurement methods for in situ observations and quantifying the nanoscale dynamic processes affecting both the material structure and chemistry during gas-solid interactions. (nist.gov)

Collaborated with groups of Professors Ruqian Wu and Xiaoqing Pan, the paper demonstrates two-dimensional spatial mapping of phonons in a single silicon-germanium (SiGe) quantum dot (QD) using monochromated electron energy loss spectroscopy in the transmission electron microscope. (mit.edu)
We measure time-resolved and temperature-resolved changes in the oxidation state of cerium using electron energy-loss spectroscopy with a spatial resolution of 0.2 nm and relate it to the structural and morphological changes imaged using electron diffraction, TEM and STEM. (nist.gov)

Now, researchers at the Georgia Institute of Technology and Oak Ridge National Laboratory (ORNL) in the USA have developed a new non-destructive technique for investigating phase transitions using the acoustic response at the nanoscale detected with an electrically conductive atomic force microscope (AFM) probe could lead to novel ferroelectric materials. (materialstoday.com)
40 years ago, FEI (now part of Thermo Fisher), developed the first ion beam column within a scanning electron microscope. (thermofisher.com)
In the 1990s, Philips Electron Optics and FEI began a partnership that led to development of the Tecnai transmission electron microscope (TEM) and ultimately the merger of the two companies in 1997. (thermofisher.com)
Likewise, the Helios 5 EXL DualBeam is the first microscope in the semiconductor industry that utilizes machine learning to expedite and automate wafer sample preparation for transmission electron microscope (TEM) imaging and analysis. (thermofisher.com)
Scanning probe techniques are used inside of a transmission electron microscope (TEM). (pitt.edu)

Intriguing phenomena arising at the atomic scale have been found in functional complex oxide materials in recent years due to significant progress in technical and methodological development in scanning transmission electron microscopy (STEM). (mrs.org)

Recent studies have shown that nano-scale exosomes play a vital role during these complicated processes. (oncotarget.com)
Identification of nano-scale exosomes and their secretory processes were further investigated via transmission electron microscopy. (oncotarget.com)
The focus of the Jacobs Research Group is to reveal the atomic-scale processes governing the mechanical and transport properties of surfaces and interfaces at the nanoscale. (pitt.edu)
However, observing and measuring the reaction kinetics of such catalytic processes at the nanometer scale is particularly challenging. (nist.gov)
Current projects include the measurement of redox processes of ceria-based anode materials for solid oxide fuel cell applications, the effect of environmental conditions on local surface plasmon resonance in nano-sized metal particles, and the growth kinetics of carbon nanotubes. (nist.gov)
This combination provides insight into fundamental processes on the nanometer spatial and femto/picosecond time scale, such as charge carrier transport in semiconductors or collective excitations of conduction band electrons at metal surfaces. (lu.se)

Here we demonstrate the ability of ultrafast transmission electron microscopy to simultaneously image both the spatial interference and the quantization of such confined plasmonic fields. (nature.com)
Time-resolved photoemission electron microscopy (TR-PEEM) belongs to a class of experimental techniques combining the spatial resolution of electron-based microscopy with the time resolution of ultrafast optical spectroscopy. (lu.se)
The high spatiotemporal resolution also offers a detailed view of the relationship between local structure and ultrafast photoexcitation dynamics in nanostructures and nanostructured materials, which is beneficial in exploring new materials and applications in opto-electronics and nano-optics. (lu.se)
We investigate hot carrier cooling in individual InAs nanowires where we find evidence that electron-hole scattering strongly contributes to the intra-band energy relaxation of photoexcited electrons on a sub-picosecond time scale and we observe ultrafast hot electron transport towards the nanowire surface due to an in-built electric field. (lu.se)

At this scale, roughly 10,000 times thinner than a sheet of paper, iron nanoparticles exposed to an oxygen environment exhibit a unique property-they form exotic structures, such as hollowed-out nanoparticles or nanoshells, which already have been used as electrodes in battery applications and as vehicles for drug delivery in medicine. (labmanager.com)
Snapshots of the 3-D structure of iron nanoparticles in the course of the oxidation process, captured through large-scale reactive molecular dynamic simulations. (labmanager.com)

Non-collinear magnetic structure induces emergent magnetic field on conduction electrons, resulting in such as a geometrical Hall effect and so on [1]. (mrs.org)

We have developed a new characterization technique that allows us to study and map changes in the crystalline structure and changes in materials behavior at substantially smaller length scales with a relatively simple approach,' explains Georgia Tech's Nazanin Bassiri-Gharb. (materialstoday.com)
Knowing where these phase transitions happen and at which length scales can help us design next-generation materials. (materialstoday.com)
On mesoscopic length scales, sharp interface descriptions are often used to describe such phenomena. (warwick.ac.uk)
These features can be introduced (at a computational cost) by considering fields that vary on atomic length scales as is done in phase field crystal models. (warwick.ac.uk)
The carbon-carbon composite so formed is then characterized at different length scales to understand the graphene additivesâ influence on the compositesâ observable macroscopic properties. (aiche.org)
The welding of metals without heating (or cold welding) has been demonstrated, but only at macroscopic length scales and under large applied pressures. (imechanica.org)
X-ray microscopy al ows the application of powerful spectroscopic techniques in length scales far smal er than possible with optical microcopy. (lu.se)

By use of advanced X-ray microscopy with XMCD contrast, emergent magnetic phenomena can be directly imaged and observed in real space on a scale that goes beyond the capabilities of any other technique. (lu.se)

This breakthrough innovation led to the DualBeam , the first instrument to combine a focused ion beam (FIB) and scanning electron microscopy (SEM) into the same tool. (thermofisher.com)

Nanotechnology , often shortened to nanotech , is the use of matter on atomic , molecular , and supramolecular scales for industrial purposes. (wikipedia.org)
Inspired by Feynman's concepts, K. Eric Drexler used the term "nanotechnology" in his 1986 book Engines of Creation: The Coming Era of Nanotechnology , which proposed the idea of a nanoscale "assembler" which would be able to build a copy of itself and of other items of arbitrary complexity with atomic control. (wikipedia.org)
The emergence of nanotechnology as a field in the 1980s occurred through convergence of Drexler's theoretical and public work, which developed and popularized a conceptual framework for nanotechnology, and high-visibility experimental advances that drew additional wide-scale attention to the prospects of atomic control of matter. (wikipedia.org)

[7] The associated research and applications are equally diverse, ranging from extensions of conventional device physics to completely new approaches based upon molecular self-assembly , [8] from developing new materials with dimensions on the nanoscale to direct control of matter on the atomic scale . (wikipedia.org)
However, the performance of such materials is strongly dependent on the quality of the crystals and the interfaces at the atomic scale. (mrs.org)
The fleeting pulses allowed researchers to see atomic-scale details of how the bacterial protein, called photoactive yellow protein or PYP, changes within millionths of a second after exposure to light. (llnl.gov)
Frank says the experimental results demonstrated that x-ray laser crystallography can be used to probe the atomic-scale details of biological molecules important to medicine and pharmacological research. (llnl.gov)
This knowledge adds to our understanding of fundamental everyday reactions like corrosion, and builds a foundation for developing new techniques to image, manipulate and control such reactions at the atomic scale. (labmanager.com)

Our experiments are accomplished by spatiotemporally overlapping electron and light pulses on a single nanowire suspended on a graphene film. (nature.com)
Both graphitizing and non-graphitizing matrices are evaluated with three variations of graphene: 300-800 nm reduced graphene oxide, 1-2 um graphene nano-platelets and 2-5 Âµm graphene. (aiche.org)

The resulting energy exchange between single electrons and the quanta of the photoinduced near-field is imaged synchronously with its spatial interference pattern. (nature.com)
By simultaneously achieving Angstrom-scale spatial resolution and nanonewton force resolution, we can interrogate individual nanoscale bodies - including the formation and separation of their contact, and its evolution under load. (pitt.edu)

It is now well established that the plastic deformation of crystalline solids is size dependent at the micron scale for a range of loading conditions. (warwick.ac.uk)
This work characterizes a carbon-carbon composites from the nano- to the micron-scale with a variety of analytical techniques. (aiche.org)

Contacting surfaces are of critical importance in advanced nanoscale applications, including micro-/nano-electromechanical systems, manufacturing schemes, and microscopy applications. (pitt.edu)
With the advent of diffraction limited light sources, coherent X-rays wil play an important role in understanding and characterizing nanoscale magnetic surfaces and interfaces with unique and novel spin textures. (lu.se)

The coupling of vacancy diffusion with dislocation motion is a true 'multi-scale' problem as vacancy/dislocation interaction is essentially a dislocation core effect. (warwick.ac.uk)
Additional effects still unexplored are the band dependence of the interfacial charge modulation and the associated changes of the electron-phonon interaction, coupling the charge and lattice degrees of freedom. (infim.ro)
Our k-resolved results on the orbital occupancy, band filling and electron-lattice interaction in multiferroic oxide heterostructures modulated by the ferroelectric polarization disclose most fundamental physics of these systems needed for further progress of beyond-CMOS ferro-functional electronics. (infim.ro)
The interaction is also addressed using polarized light microscopy [1] and scanning and transmission electron microscopy [2]. (aiche.org)

The chain serves as a charge reservoir from which electrons are transferred to the copper-oxygen planes due to a decrease in oxygen content. (mrs.org)

The Electric Universe is a dynamic constantly evolving universe interconnected by electric filamentous plasma currents aligned with magnetic fields (Birkeland currents) on all scales, from interplanetary to supergalactic, forming gigantic circuits that string together groups of distant galaxies. (i-sis.org.uk)
This combination of lateral and temporal resolution and magnetic contrast is especial y useful for the investigation of magnetic phenomena on the nanoscale [3-5]. (lu.se)
Soft X ray transmission microscopy with circularly polarized photons tuned at specific resonant energies allows to image magnetic textures by exploiting the dichroic absorption contrast which depends on the angle of the magnetization and X-ray beam. (lu.se)

We explore the optical properties of disordered, porous gold nano-particles (nanosponges). (lu.se)

These instruments offer fast, easy, and high-quality sample preparation for scanning/transmission electron microscopy (S/TEM) imaging, and advanced automation capabilities that dramatically speed time to results. (thermofisher.com)
As part of MicLUs work, a survey to investigate the needs and capabilities regarding microscopy as well as image processing and analysis at Lund University has been created. (lu.se)

She holds a Royal Society Wolfson Fellowship and is Associate Editor of Nano Letters. (wikipedia.org)
The Nano group member, graduate student James Zhang won the J-WAFS fellowship. (mit.edu)

This definition reflects the fact that quantum mechanical effects are important at this quantum-realm scale, and so the definition shifted from a particular technological goal to a research category inclusive of all types of research and technologies that deal with the special properties of matter which occur below the given size threshold. (wikipedia.org)

The experimental band dispersions from the buried La1-xSrxMnO3 identify coexisting two-dimensional hole and three-dimensional electron charge carriers. (infim.ro)
In the past 40 years, a number of experimental techniques (electron, photon, or scanning probe based), as well as theoretical methods, have been refined and adapted to allow operando studies. (lu.se)

The definition refers to the coupling between collective oscillations of electrons in the metal, that is, surface plasmons, and the resulting radiated electromagnetic field, the polariton, which is evanescently confined in the direction perpendicular to the interface. (nature.com)

In their study, researchers sought to understand the Kirkendall effect in small particles of iron during oxidation at the nanoscale level, specifically in the 10-nanometer range. (labmanager.com)

The bonding between the matrix and the additive is crucial in understanding its behavior at the macro-scale. (aiche.org)

This methodology enables the control and visualization of plasmonic fields at the nanoscale, providing a promising tool for understanding the fundamental properties of confined electromagnetic fields and the development of advanced photonic circuits. (nature.com)

Our group uses novel combinations of scanning probe microscopy, electron microscopy, and mechanical testing techniques to interrogate the mechanical behavior of contacts between nanoscale bodies, and the interdependence between mechanical properties and functional properties of the contact. (pitt.edu)

We've had very good techniques for characterizing these phase changes at the large scale, and we've been able to use electron microscopy to figure out almost atomistically where the phase transition occurs, but until this technique was developed, we had nothing in between,' adds Bassiri-Gharb. (materialstoday.com)
Although TEM-based techniques are valuable for nanoscale characterization, conventional TEMs function only under high vacuum conditions. (nist.gov)

Observing the changes in the bulk material or with electron microscopy is possible but now the US teams have demonstrated how an acoustic technique can home in on the scale that lies between the bulk and the tens of atoms domain. (materialstoday.com)
Transmission electron microscopy (TEM) is the only technique able to characterize the nature of buried interfaces in these engineered van der Waals crystals and hence to provide insights into their optical, electronic and mechanical properties. (mrs.org)
In forensic examinations where topographic characterization is important like in fingermark, textile and document forgery examinations, the atomic force microscopy (AFM) imaging technique can be of value. (intechopen.com)

The term polariton is used to define a field that is strongly coupled to a dipolar excitation, which in the case of SPPs is provided by the distribution of electrons in the metal 1 . (nature.com)
The tools included fluorescent metal sensors, transmission electron microscopy, and nanoscale secondary ion mass spectrometry (NanoSIMS), which is housed at Livermore. (llnl.gov)
We are investigating the redox properties of doped ceria as potential anode materials for SOFCs operating at intermediate temperature (≈700 °C). We are especially interested in the nanoscale measurements of the redox reaction at the three phase boundary (metal, doped ceria, and gas). (nist.gov)

This study shows, for the first time, that nano-scale exosomes use two secretion and two absorption pathways in the reptile, which may be contribute to long-term sperm storage. (oncotarget.com)
In this talk I would like to discuss methods of modeling microstructure formation on mesoscopic time scales. (warwick.ac.uk)

An energy distribution analyzer for an electron source developed for Intel in 1984 for Voltage Contrast SEM and FIB imaging. (thermofisher.com)
More stories were told during the science workshops, titled "Single Molecule Microscopy Tools for Life Science and Materials Science," "Frontiers of X-ray and Electron Imaging," "Charge Transfer on the Nanoscale," and "Applications of Soft X-ray for Critical Energy Science and Technology. (bnl.gov)

Observing and measuring the dynamic changes that take place at the nanometer scale during the synthesis and operation of active nanostructures is vital for understanding and ultimately controlling their properties. (nist.gov)

Specifically, the paper shows that disordered interfaces with certain symmetries create more nonspecular transmission. (mit.edu)

This is, for example, of paramount importance in ferroelectric thin films, where the presence of a phase transition and the accompanying large enhancement in the piezoelectric response is key in processing smaller and smaller piezoelectric micro- and nano-electromechanical systems. (materialstoday.com)
Semiconductor chalchogenide nanocrystals, thanks to the very high degree of sophistication reached in controlled synthetic procedures, play a key role as model systems for the elucidation of crystal growth and assembly at the nanoscale. (acs.org)

Various local surface plasmon resonance (LSPR) modes can be excited that are much smaller than the wavelength of the exciting light, leading to nanoscale optical confinement. (nist.gov)

It is therefore common to see the plural form "nanotechnologies" as well as " nanoscale technologies" to refer to the broad range of research and applications whose common trait is size. (wikipedia.org)

It covers a wide range of topics within super-resolution optical microscopy, for the beginner as well as for the expert. (lu.se)

With the help of supercomputers and synchrotrons, researchers at the U.S. Department of Energy's (DOE) Argonne National Laboratory and Temple University are illustrating the process on a finer scale than ever before. (labmanager.com)

Further, we describe a transmission grating-based interferometer for the generation of stable, phase-locked pulse pairs. (lu.se)

50 ps make X-ray microscopy a powerful tool. (lu.se)

The high quality of the welds is attributed to the nanoscale sample dimensions, oriented-attachment mechanisms and mechanically assisted fast surface-atom diffusion. (imechanica.org)

The ferroelectric polarization modulates their charge density, affecting the coupling of the 2D holes and 3D electrons with the lattice which forms large Frohlich polarons inherently reducing mobility of the charge carriers. (infim.ro)
Electron microscopy for life scientists, free of charge for PhD students from LU. (lu.se)

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