• We have combined ground-based optical drift-scan spectrophotometry with infrared spectroscopy from Spitzer and Akari with gaps in spectral coverage being filled using Multi-wavelength Analysis of Galaxy Physical Properties spectral energy distribution models. (caltech.edu)
  • The spectroscopy and models were normalized, constrained, and verified with matched-aperture photometry measured from Swift, Galaxy Evolution Explorer, Sloan Digital Sky Survey, Two Micron All Sky Survey, Spitzer, and Wide-field Infrared Space Explorer images. (caltech.edu)
  • In this study, the feasibility of analyzing anthracene and fluoranthene in soil by Raman spectroscopy, infrared spectroscopy combined with spectral fusion technology and partial least squares (PLS) was investigated. (rsc.org)
  • In comparison to the single applications of Raman and infrared spectroscopy, accurate prediction of PAHs was made by fusion spectroscopy, with R 2 = 0.9514, RMSE = 0.9143 mg g −1 , RPD = 4.3211 and R 2 = 0.9609, RMSE = 0.8614 mg g −1 RPD = 5.0361 for anthracene and fluoranthene, respectively. (rsc.org)
  • In summary, the combination of Raman and infrared spectroscopy is a promising alternative to rapid quantitative analysis of PAHs in soil. (rsc.org)
  • Infrared and Raman Spectroscopy: Principles and Spectral Interpretation explains the background, core principles and tests the readers understanding of the important techniques of Infrared and Raman Spectroscopy. (co.ma)
  • Infrared and Raman Spectroscopy, Principles and Spectral Interpretation, Second Edition provides a solid introduction to vibrational spectroscopy with an emphasis on developing critical interpretation skills. (co.ma)
  • This book fully integrates the use of both IR and Raman spectroscopy as spectral interpretation tools, enabling the user to utilize the strength of both techniques while also recognizing their weaknesses. (co.ma)
  • An infrared spectroscopy correlation table (or table of infrared absorption frequencies) is a list of absorption peaks and frequencies, typically reported in wavenumber, for common types of molecular bonds and functional groups. (wikipedia.org)
  • In physical and analytical chemistry, infrared spectroscopy (IR spectroscopy) is a technique used to identify chemical compounds based on the way infrared radiation is absorbed by the compound. (wikipedia.org)
  • Recently there has been increased interest in coherent ultrafast sources in the mid-infrared (MIR), driven by applications in time-resolved molecular spectroscopy 16 and the development of small-footprint ultrafast X-ray lasers 17 . (nature.com)
  • Near-infrared (NIR) spectroscopy measures the interaction of near-infrared light with a sample, including transmission, reflectance and absorbance, facilitating the identification of analytes. (selectscience.net)
  • Cluster analysis of respective spectra obtained by Fourier-transform infrared-spectroscopy by using OPUS Software version 4.2 (BrukerOptics, Ettlingen, Germany). (cdc.gov)
  • Aerosol analysis using quantum cascade laser infrared spectroscopy: application to crystalline silica measurement. (cdc.gov)
  • A method for trace analysis of aerosol mineral components using quantum cascade laser (QCL) based infrared absorption spectroscopy is described. (cdc.gov)
  • This detection limit is an order-of-magnitude lower than those attainable by the current standard X-ray diffraction (XRD) or Fourier transform infrared spectroscopy (FTIR) methods involving similar sample preparation and treatment. (cdc.gov)
  • Originally developed for infrared spectroscopy, our innovative material system utilizes the complex electronic surfaces of nanowires to produce a very high optical gain, i.e. many charge carriers for a single absorbed x-ray photon. (lu.se)
  • Firstly, Raman spectra and infrared spectra of soil were collected. (rsc.org)
  • Finally, low-level data fusion was achieved by concatenating Raman and infrared spectra into a matrix, and coupled with PLS to construct a quantitative analysis model of PAHs in soil. (rsc.org)
  • We present the largest and most homogeneous collection of near-infrared (NIR) spectra of Type Ia supernovae (SNe Ia): 339 spectra of 98 individual SNe obtained as part of the Carnegie Supernova Project-II. (harvard.edu)
  • These spectra, obtained with the FIRE spectrograph on the 6.5 m Magellan Baade telescope, have a spectral range of 0.8-2.5 μm. (harvard.edu)
  • An objective method for semi-empirical definition of spectral features sensitive to various physical parameters is applied to the spectra. (aanda.org)
  • The method is applied in the I - and K -band windows of the IRTF stellar spectra to verify the new technique by comparing the results with the known behavior of well-studied spectral features. (aanda.org)
  • The book reviews basic principles, instrumentation, sampling methods, quantitative analysis, origin of group frequencies and qualitative interpretation using generalized Infrared (IR) and Raman spectra. (co.ma)
  • Tables of frequencies (peaks) for both infrared and Raman spectra are provided at key points in the book and will act as a useful reference resource for those involve interpreting spectra. (co.ma)
  • We present an empirical infrared spectral library of medium-resolution (R ≈ 2000-3000) H (1.6 μm) and K (2.2 μm) band spectra of 218 red stars, spanning a range of [Fe/H] from ∼-2.2 to ∼+0.3. (arizona.edu)
  • We report the values of 19 indices covering 12 spectral features measured from the spectra in the library. (arizona.edu)
  • Finally, we derive calibrations to estimate the effective temperature, and diagnostic relationships to determine the luminosity classes of individual stars from near-infrared spectra. (arizona.edu)
  • This paper is part of a larger effort aimed at building a near-IR spectral library to be incorporated in population synthesis models, as well as at testing synthetic stellar spectra. (arizona.edu)
  • This second edition more than doubles the amount of interpreted IR and Raman spectra standards and spectral unknowns. (co.ma)
  • Infrared and Raman Spectra of Inorganic and Coordination Compounds, Applications in Coordination, Organometallic, and Bioinorganic Chemistry. (wikipedia.org)
  • The existence of diagnostic features in the visible and infrared regions makes it possible to use reflectance spectra not only to identify mineral assemblages but also for calibration and classification of satellite images, considering lithological and/or mineral mapping. (mdpi.com)
  • For this purpose, a consistent spectral library with the target spectra of minerals and rocks is needed. (mdpi.com)
  • The FLEX PRO UV-visible-NIR microspectrophotometer acquires microscale images and spectra from the deep-UV to the near-infrared (NIR). (laserfocusworld.com)
  • 13] N. Roeges: A Guide to the Complete Interpretation of Infrared Spectra of Organic Structures, J. Wiley, N.Y., 1993. (edu.pl)
  • In each case, 2 infrared spectra of isolates from game animals and a selection of several Corynebacterium ulcerans and C. pseudotuberculosis strains were used for calculation by using the Ward algorithm. (cdc.gov)
  • The near-infrared (NIR) wavelength range offers some unique spectral features, and it is less prone to the extinction than the optical one. (aanda.org)
  • Volcanic ash has a unique spectral signature at 11 and 12 µm and mass loadings can be measured from space using the brightness temperature difference between these two channels. (bris.ac.uk)
  • Different objects on the Earth's surface have their own, unique spectral response, which depend on the physical and chemical properties of each object. (lu.se)
  • We present simple stellar population models based on the empirical X-shooter Spectral Library (XSL) from near-ultraviolet (NUV) to near-infrared (NIR) wavelengths. (iac.es)
  • QmagiQ proposes to develop and deliver to NASA a multi-spectral infrared camera covering a broad range of wavelengths from 1 micron to 16 microns. (inknowvation.com)
  • We find that 10 of the WTTS with excess infrared emission have companions that may contribute measurably and, in some cases significantly, at infrared wavelengths. (aanda.org)
  • Molecular line surveys are commonly conducted at longer wavelengths, in the far-infrared to the sub-mm/mm. (aas.org)
  • Measurements can be conducted using a Fourier-transform near infrared (FT-NIR) spectrometer, while there are also UV-Vis- NIR spectrophotometers that measure a broader spectrum of wavelengths. (selectscience.net)
  • The optimized array detectors show a broad spectral sensitivity at normal incidence for wavelengths from visible to far-infrared up to 20 μm, promoted by both interband and intersubband transitions. (lu.se)
  • Infrared excesses associated with debris disk host stars detected so far peak at wavelengths around ~100 μm or shorter. (lu.se)
  • He specializes in IR and Raman spectral interpretation, spectroscopic chemometric analyses, early phase API and chemical development support, and process analytical techniques (PAT). (co.ma)
  • Many of the reported solutions are limited to the visible spectral range 2-4 , while those addressing the near-infrared range have a very limited spectral range 5,7,8. (hal.science)
  • Data from tests of basic spectrometer function, such as modulation efficiency, scan jitter, spectral range, spectral resolution and sweep speed will be presented. (nist.gov)
  • Comparison of our spectral energy distributions with other template libraries and the observed colors of galaxies indicates that we have smaller systematic errors than existing atlases, while spanning a broader range of galaxy types. (caltech.edu)
  • 0.2 and ages above 50 Myr, a broader range in the NIR than in other models based on empirical spectral libraries. (iac.es)
  • Our models make it possible to perform in-depth studies of colours and spectral features consistently throughout the optical and the NIR range to clarify the role of evolved cool stars in stellar populations. (iac.es)
  • First, operation over a broad spectral range extending to the infrared is required to enable covering the molecular absorption spectrum of a broad variety of materials. (hal.science)
  • Lightblades spectrophotometers use a bladed design and feature a spectral range from 200 to 2500 nm. (laserfocusworld.com)
  • Optically derived tissue properties across a range of breast densities and the effects of breast compression on estimates of hemoglobin, oxygen metabolism, and water and lipid concentrations were obtained from a coregistered imaging system that integrates near-infrared spectral tomography (NIRST) with digital breast tomosynthesis (DBT). (umassmed.edu)
  • In the novel method developed by Nina Reistad, the wavelength range is extended to the near infrared (NIR) spectral range which allows deeper penetration of photons into the tissue. (lu.se)
  • The EW-DRS setup is modular consisting of a range of reflection probes (housing the two fibers) and spectrometers (determining the spectral range), which allows for great flexibility in obtaining detailed information on the molecular composition of the tissue. (lu.se)
  • The use of SPECTROMETRY measurements (of radiance, reflectance, optical scattering, absorption, etc.) made for each point of an image, across the whole spectrum of a selected spectral range such as infrared, visual, ultraviolet, or X-rays. (bvsalud.org)
  • In addition to detecting, tracking and chemically analyzing fires, a drone equipped with such a multi-spectral camera can also be used to monitor and analyze vegetation, forests, crops, industrial gas leaks, and pollution. (inknowvation.com)
  • A miniaturised multi-spectral Thermal Infrared (TIR) space imaging system for improving volcanic ash monitoring. (bris.ac.uk)
  • The optimized array detectors show a broad spectral sensitivity at normal. (lu.se)
  • We present an atlas of 129 spectral energy distributions for nearby galaxies, with wavelength coverage spanning from the ultraviolet to the mid-infrared. (caltech.edu)
  • We use spectral energy distribution (SED) fitting to place constraints on the stellar population properties of 29 quiescent ultra-diffuse galaxies (UDGs) across different environments. (iac.es)
  • Spectral signatures can be directly measured with the use of spectrometers and spectroradiometers. (lu.se)
  • Nonetheless, the MIR has historically been underutilized in analogous astrochemical studies for reasons including atmospheric interference and low available spectral resolution from space-based missions. (aas.org)
  • This will be accomplished through the observation of spectral features in the extreme and far ultraviolet (EUV/FUV) spectral regions from 70 to 205 nm. (esa.int)
  • Here we report the experimental observation of such mid-infrared dispersive waves, embedded in a 4.7-octave-wide supercontinuum that uniquely reaches simultaneously to the vacuum ultraviolet, with up to 1.7 W of total average power. (nature.com)
  • We photoionize atoms using short extreme ultraviolet pulses and probe the emitted electron with a delayed, spectrally tunable, bichromatic infrared pulse. (lu.se)
  • The primary data used are from the EXES spectrograph aboard the Stratospheric Observatory for Infrared Astronomy (SOFIA). (aas.org)
  • Infrared and Raman Characteristic Group Frequencies: Tables and Charts. (wikipedia.org)
  • We fit model stellar atmospheres to the optical (UBV) and IR spectral energy distributions (SEDs) of 182 OB stars with known spectral types and measure the bolometric luminosity and extinction for each star. (psu.edu)
  • To boost the spectral resolution beyond this limit, we propose the concept of parallel (or multi-core) FTIR, where multiple interferometers provide complementary optical paths using the same actuator and within the same chip. (hal.science)
  • By actively shaping the optical pump within the random laser, single-mode operation at any selected wavelength is achieved with spectral selectivity down to 0.06 nm and more than 10 dB side-lobe rejection. (nature.com)
  • In this Letter, we achieve experimental control of the random laser spectral emission by optimization of the optical pump profile. (nature.com)
  • We use the fully Bayesian routine PROSPECTOR coupled with archival data in the optical, near, and mid-infrared from Spitzer and Wide-field Infrared Survey Explorer under the assumption of an exponentially declining star formation history. (iac.es)
  • The infrared arm is a more classical 4C design, while the optical spectrograph will use a set of dichroics and VPH-gratings to produce an Echelle like spectrum, albeit with higher efficiency. (eso.org)
  • Alexander Bengtsson, Material and technique development for ultrasound optical tomography using spectral hole burning filters , PhD thesis, Faculty of Engineering, Lund University 2022. (lu.se)
  • The work presented in this thesis is focused on mastering the techniques to generate and characterize few--optical--cycle light pulses in the near- and short-wave infrared spectral regions. (lu.se)
  • We have analysed new infrared photometric data taken by the Infrared Space Observatory, in combination with 2MASS data where available, of 12 weak-line T Tauri stars (WTTS), belonging to different molecular clouds. (aanda.org)
  • An basic and public enumerative Transactions x Crystals of download High Spectral that interprets molecular and favourite efficiently does to use ceilings into the suffering at the marketing and camera variations, be multiple vigilance limits, and have specified field decline technologies hardly that the posture is cold, as Once captured, for the sessions of the work. (schuelsche.de)
  • This is the only instrument that accesses the entire MIR with the spectral resolution to distinguish individual molecular transitions and identify molecules with certainty. (aas.org)
  • Though the James Webb Space Telescope (JWST) will be more sensitive than SOFIA, its low spectral resolution could lead to confusion in identifying the contribution of gaseous molecular species. (aas.org)
  • We present initial performance data from a cryogenic Fourier transform spectrometer (Cryo-FTS) designed for low-background spectral infrared calibrations. (nist.gov)
  • This is addressed in our work with an Micro-Electro Mechanical Systems (MEMS)-based Fourier transform infrared spectrometer with an embedded movable micro-mirror on a silicon chip. (hal.science)
  • A correction scheme was applied to account for spectral interference from kaolinite mineral for coal dust samples. (cdc.gov)
  • Multimodal imaging including spectral domain OCT and confocal near infrared reflectance for characterization of outer retinal pathology in pseudoxanthoma elasticum. (medscape.com)
  • Chemical compounds all carry distinctive absorption "fingerprints" within the mid-infrared spectral region of 2 to 12 microns. (phys.org)
  • Infrared Chemical imaging for the future. (lu.se)
  • In addition, quantum dot-based LEDs and photodetectors enable custom spectral sensing, material-integrated light sources, and design and display elements. (fraunhofer.de)
  • Here we report on infrared photodetectors based on arrays of InP nanowires with embedded InAsP quantum discs. (lu.se)
  • The calculated frequencies were compared with the experimental IR spectral data in carbon tetrachloride, carbon disulfide solutions and in solid state. (edu.pl)
  • 14] R.A. Nyquist and W.J. Potts: "Characteristic infrared absorption frequencies of thiol esters and related compounds", Spectrochimica Acta, Vol. 7, (1959), pp. 514-538. (edu.pl)
  • Using the mid-infrared data, we probe the existence of dust in UDGs. (iac.es)
  • For true disks, both the dust temperatures inferred from the spectral energy distributions and the disk radii estimated from the images suggest that the dust is nearly as cold as a blackbody. (lu.se)
  • A computationally efficient radiative transfer model (RTM) for calculating visible (VIS) through shortwave infrared (SWIR) reflectances is developed for use in satellite and airborne cloud property retrievals. (nasa.gov)
  • This template can serve as the baseline spectral energy distribution for light-curve fitters and can identify peculiar spectral features that might point to compelling physics. (harvard.edu)
  • This high gain increases both the sensitivity and spectral resolution that can be achieved with a detector. (lu.se)
  • Knowledge about spectral signatures is useful when interpreting data from Earth observing satellites. (lu.se)
  • With this tool, we are constantly developing new software for controlling the acquisition and algorithms, such as spectral unmixing, for providing live feedback on various spectral signatures of tissue differentiation. (lu.se)
  • A key feature is a broadband high-quantum-efficiency strained layer superlattice focal plane array (SLS FPA) with spectral filters integrated directly on the FPA a design that allows the camera to be very compact. (inknowvation.com)
  • We report the results of a new survey of massive, OB stars throughout the Carina Nebula using the X-ray point source catalog provided by the Chandra Carina Complex Project (CCCP) in conjunction with infrared (IR) photometry from the Two Micron All-Sky Survey and the Spitzer Space Telescope Vela-Carina survey. (psu.edu)
  • The 2030PV PRO microspectrophotometer combines high-resolution optics and advanced software algorithms to allow quick, accurate measurements of the spectral properties of microscopic. (laserfocusworld.com)
  • We use spectral measurements in order to obtain information about the spectral response of ground materials and land vegetation phenology, as a reference for satellite measurements. (lu.se)
  • It was recently predicted that, in the strong-field regime, the additional transient anomalous dispersion introduced by gas ionization would allow phase-matched dispersive wave generation in the mid-infrared-something that is forbidden in the absence of free electrons. (nature.com)
  • download High Spectral Resolution Terms on combinatorial and example knowledge. (schuelsche.de)
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  • Second, fine spectral resolution Δλ is also required to facilitate screening over several chemicals. (hal.science)
  • The concept scalability is validated with 4 interferometers, leading to approximately 3 times better spectral resolution. (hal.science)
  • Recently, the first flux calibrated NIR library of cool stars from the NASA Infrared Telescope Facility (IRTF) have become available, and it has not been fully exploited yet. (aanda.org)
  • The camera will be valuable to NASA for space telescopes (where its much higher operating temperature compared to Si BIB detectors offers longer operating life) and for Earth and Planetary Science Decadal Survey priorities like infrared sounding. (inknowvation.com)
  • Our results highlight the potential of type-I InAs1−x Sb x /Al y In1−y As metamorphic QWs to address several limitations associated with existing heterostructures operating in the mid-infrared, establishing these novel heterostructures as a suitable platform for the development of light-emitting diodes and diode lasers. (ucc.ie)
  • The mid-infrared (MIR), however, provides the only access to rovibrational transitions and molecules with no permanent dipole moment, and probes hot core material closest to embedded protostars. (aas.org)
  • You now have the opportunity to learn about and influence the case of a new infrared beamline at MAX IV Laboratory, the Swedish National Synchrotron Facility, during a workshop in Uppsala, 8-9 March 2017. (lu.se)
  • The spectral energy distribution curves of all the stars in our sample show infrared excess in all cases except one. (aanda.org)
  • This is the Beta version of "An Atlas of Galaxy Spectral Energy Distributions From The UV to the Mid-Infrared" and will be updated once the paper is accepted for publication. (monash.edu)
  • Principal component analysis is applied to characterize the diversity of the spectral features and reduce data dimensionality to a smaller subspace. (harvard.edu)
  • Our template is able to predict spectral variations that are correlated with s BV , such as the hallmark NIR features: Mg II at early times and the H-band break after peak. (harvard.edu)
  • It reliably predicts the trends of spectral features with respect to a given physical parameter but not their absolute strengths. (aanda.org)
  • Agnes Paulus, Shining infrared light on amyloid structures in neurodegenerative proteinopathies , PhD thesis, Faculty of Medicine, Lund University 2022. (lu.se)
  • By varying the frequency separation of the two spectral components of the probe pulse, we determine the populations and coherences of the density matrix. (lu.se)
  • We have also searched for companions to these stars and studied their possible contributions to the infrared emission. (aanda.org)
  • Specializes in Raman and UV-visible-NIR microscopes and microspectrometers for imaging and spectral analysis of even sub-micron samples. (laserfocusworld.com)
  • Our results suggest there is a continuum in infrared excess properties from CTTS to WTTS rather than a clear differentiation based on a somewhat arbitrary EW (H α ) criterion. (aanda.org)
  • Spectral fusion technology can further improve the accuracy and stability of quantitative analysis by including more comprehensive information. (rsc.org)
  • 4] M. Arnaudov, B.B. Ivanova, L. Prangova: "Linear-dichroic infrared spectral and theoretical analysis of phenyltiolbenzoate", Bulletin of the Chemists and Technologists of Macedonia, Vol. 21, (2002), pp. 151-155. (edu.pl)