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Showing 1 to 20 of 32 for “"Visible near infrared"”.

  1. Rapid identification of oil contaminated soils using visible near infrared diffuse reflectance spectroscopy

    Chakraborty, SomsubhraPlant, Environmental Management and Soil Sciences2022

    … soil samples were collected and scanned using visible near-infrared diffuse reflectance spectroscopy (VisNIR DRS) at three combinations of moisture content and pretreatment. The VisNIR spectra of soil samples were used to predict total petroleum hydrocarbon (TPH) content using partial least …

    lsu-thes Repository record

  2. Wavelength Modulation and Noise Reduction Using a Minicomputer-Controlledultraviolet - Visible - Near-Infrared Recording Spectrophotometer

    Timmer, Richard BurnardUniversity of Illinois at Urbana-Champaign2014

    Made available in DSpace on 2014-12-10T23:01:59Z (GMT). No. of bitstreams: 1 7500450.pdf: 6453592 bytes, checksum: 3613485c98194a2b43d409e8801a2e4e (MD5) Previous issue date: 1974

    uiuc Repository record

  3. Experiment and simulation study on a novel, effective radiative cooing film

    Zhou, KaiUniversity of Illinois at Urbana-Champaign2020

    … consumption. It features a high ultraviolet visible near-infrared (UV-Vis-NIR) reflectivity and high IR emissivity, and thus achieves the cooling effect even under intense sunlight. A simple, cost-effective process is proposed to fabricate DRC film whose optical properties are characterized …

    uiuc Repository record

  4. Synthesis and characterization of poly-(p-phenylene pyromellitamic acid)

    Tsimpris, Constantine WilliamUniversity of Missouri--Rolla2016

    … acid)s were also characterized by ultraviolet, visible, near infrared, and infrared spectroscopy; differential thermal analysis; vapor pressure osmometry; and gel permeation chromatography"--Abstract, page ii.</p>

    must-thes Repository record

  5. Multispectral Image Labeling for Unmanned Ground Vehicle Environments

    Teresi, Michael BryanVirginia Tech2015

    … to create a multispectral image cube. Visual, near infrared, shortwave infrared, and visible/near infrared polarimetric data are considered. The aligned images are then used to extract features which are fed to machine learning algorithms. The class list includes common materials present in …

    vt Repository record

  6. Nonlinear Microscopy for Materials Analysis and Clinical Pathology

    Doshi, Sagar P.Massachusetts Institute of Technology2024

    … for analyzing material properties. Nonlinear microscopy (two-photon absorption fluorescence) was used to image surgical specimens in a clinical pathology practice. The optical system design of the instrument is explained, and its performance in terms of diagnostic accuracy …

    mit Repository record

  7. An investigation of the nickel (II) and cobalt (II) complexes employing pentadentate ligands derived from salicylaldehyde and bis (3,3'- aminopropyl) ether or sulfide

    St. Clair, Anne K.Virginia Tech1972

    … by elemental analysis, mass spectra, infrared spectra, magnetic susceptibility measurements, and ultraviolet-visible-near infrared spectra. In the solid state the nickel(II) complexes, Ni(X-SALDAPE) and Ni(X-SALDAPS), where X = H, 5-Br, 3-(CH₃)₂CH, or 3-CH₃O, are speculated as …

    vt Repository record

  8. Epoxy Siloxane Self-Cleaning Coating using F64PcZn/TiO2 Photocatalyst Composite

    Sullivan, James F.2021

    … which makes greater use of light in the visible/near-infrared (NIR) region, was prepared by coating a nano-particle photocatalytic TiO<sub>2</sub> with 3% w/w of F<sub>64</sub>PcZn photosensitizer resulting in a dark green powder. The F<sub>64</sub>PcZn/P25 TiO<sub>2</sub> composite …

    shu-thes Repository record

  9. Real-time Image Processing on an FPGA for an Intraoperative Goggle Device

    Zhang, Yiyi2014

    The emergence of near-infrared dyes for fluorescence imaging has had a tremendous impact in the medical field. In particular, indocyanin green (ICG) has been widely used for assessing tumor margins during intraoperative procedures. Typically, the dye is intravenously injected into the patient, and …

    wustl Repository record

  10. An analysis of synchrotron radiation from relativistic electrons in the Alcator C-Mod tokamak

    Tinguely, Roy Alexander.Massachusetts Institute of Technology2019

    … of the synchrotron radiation in the visible/near-infrared wavelength range, [lambda] ~~ 300-1000 nm. The kinetic equation solver Code [Landreman et al 2014 Comput. Phys. Commun., Stahl et al 2016 Nucl. Fusion] and synthetic diagnostic Soft [Hoppe et al 2018 Nucl. Fusion] are used to …

    mit Repository record

  11. Ground-Based Hyperspectral Imaging and Data Analysis for Near-Vertical Outcrop Surfaces

    Okyay, Unal 1985-University of Houston2017

    … fail to provide an adequate viewing angle for near-vertical outcrops which often provide excellent opportunity for detailed observations. Thus, there has been an increasing interest in hyperspectral data collected from ground-based platforms for studying near-vertical rock exposures. The …

    houston Repository record

  12. Multi-Scale Mapping of Diagenetic Processes in Sandstones Using Imaging Spectroscopy: A Case Study of the Frontier Formation (Wyoming, U.S.A.) and the Utrillas Formation (Burgos, Spain)

    Alonso De Linaje De Nicolas, Virginia 1987-University of Houston2016

    … upper member of the Utrillas Formation, Spain. Visible Near-Infrared (VNIR) and Shortwave-Infrared (SWIR) Specim® hyperspectral cameras were used to scan near vertical and well exposed outcrop walls. Reflectance spectra was analyzed and compared with high resolution laboratory spectral and …

    houston Repository record

  13. Characterizing Organic Coatings on Renaissance Bronzes with Short-Wave Infrared and Mid-Infrared Spectroscopy

    Provost, Elizabeth2025

    … external reflection Fourier transform infrared spectroscopy (ER-FTIR) and fibre optic reflectance spectroscopy (FORS)—across the visible/near-infrared (VIS-NIR, ~400–1000 nm), short-wave infrared (SWIR, ~1000–2500 nm), and mid-infrared (MIR, ~2.5–25 μm) ranges. Twenty-six reference …

    queens Repository record

  14. Topological photonic metasurfaces for light manipulation and strong light-matter interaction

    Kiriushechkina, Svetlana2023

    … photonic structures which can operate in visible, near- infrared and mid-infrared regions. This spectral flexibility of photonic metasurfaces design extends its application range to investigation of even more fascinating structures integrated with different 2D materials. In this …

    cuny Repository record

  15. Design, fabrication and characterization of resonant waveguide grating based optical biosensors

    Hossain, Md NazmulUniversity College Cork2015

    … RWG sensors for different spectral regions (e.g. visible, near infrared) for use in label-free optical biosensing and also to explore different RWG parameters to maximize sensitivity and increase detection accuracy. Design and fabrication of the waveguide embedded resonant nano-cavity are also …

    cork Repository record

  16. Strong-field Phenomena in Low-dimensional Materials at Terahertz Frequencies

    Shi, JiaojianMassachusetts Institute of Technology2021

    … and detection of high-field THz and mid-infrared (MIR) pulses. The perplexing strong-field responses of low-dimensional materials urge the implementation of multimodal probe schemes and advanced theoretical frameworks. So I describe three classes of spectroscopic methods to disentangle …

    mit Repository record

  17. SPECTROSCOPIC ASSESSMENT OF TISSUE ENGINEERED CARTILAGE: A PATHWAY FOR BENCH TO BEDSIDE EVALUATION OF CARTILAGE DEVELOPMENT AND REPAIR

    Kandel, ShitalTemple University. Libraries2021

    … fiber optic probe approach that spans the visible-near infrared (Vis-NIR) regions. This would be a novel, non-destructive technique based on high frequency nonionizing radiation that causes vibrations in the NIR region (750-2500 nm or 12000 to 4000 cm-1), and electronic transitions in the …

    temple Repository record

  18. Materials and Surface Processes at Gale Crater and the Moons of Mars Derived from High Spatial and Spectral Resolution Orbital Datasets

    Fraeman, Abigail Ann2014

    … or a late stage impact.</p><p>Oversampled visible/near-infrared hyperspectral data over Mt. Sharp in Gale Crater are used to generate spatially sharpened maps of the location of red crystalline hematite within the uppermost stratum of a ~6.5 km long ridge on the mound's northern flank. …

    wustl Repository record

  19. A Comparison of Atmospheric Models MODTRAN and 6S Based on Top of Atmosphere Reflectances of Natural Targets as Applied to Selected Mid-resolution Sensors

    Sharma, Sanjog2017

    … predicted TOA reflectances for sets of inputs as nearly identical to one another as possible. This study included the use of true hyperspectral ground data for a maintained vegetated grass site and for a desert. The percentage difference between the two models as evaluated for different sensors …

    sdstate Repository record

  20. Interaction of Terahertz Radiation with Semiconductor Nanostructures and Quantum Systems

    Michailow, WladislawUniversity of Cambridge2022

    … 10^(12) Hz, lying between the microwave and infrared regions. For a long time, the THz range has been one of the less explored areas of research in contemporary physics, owing to the fact that physical principles used in both the higher and the lower frequency ranges no longer work in the THz …

    cambridge Repository record

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