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    Plasmonic aluminum particle based display device and related methods
    1.
    发明授权
    Plasmonic aluminum particle based display device and related methods 有权

    公开(公告)号：US10921680B2

    公开(公告)日：2021-02-16

    申请号：US16710507

    申请日：2019-12-11

    申请人： UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.

    发明人： Debashis Chanda ,  Daniel Franklin

    IPC分类号： G02F1/19 ,  G02F1/1335

    摘要： A display device may include a substrate, a plasmonic aluminum reflector layer over the substrate, and a conducting oxide layer over the plasmonic aluminum reflector layer. The display device may have a circular polarizer over the conducting oxide layer and configured to receive incident visible radiation. The incident visible radiation may cause plasmon resonance within the plasmonic aluminum reflector layer. The display device may include a circuit configured to apply a voltage between the conducting oxide layer and the plasmonic aluminum reflector layer to cause the plasmonic aluminum reflector layer to selectively reflect the incident visible radiation based on the voltage.

    DYNAMICALLY TUNABLE, SINGLE PIXEL FULL-COLOR PLASMONIC DISPLAY, METHOD AND APPLICATIONS
    3.
    发明申请
    DYNAMICALLY TUNABLE, SINGLE PIXEL FULL-COLOR PLASMONIC DISPLAY, METHOD AND APPLICATIONS 审中-公开

    公开(公告)号：US20180284509A1

    公开(公告)日：2018-10-04

    申请号：US15945184

    申请日：2018-04-04

    申请人： UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.

    发明人： Debashis Chanda ,  Daniel Franklin

    IPC分类号： G02F1/139 ,  G02F1/1335

    CPC分类号： G02F1/1395 ,  B82Y20/00 ,  G02F1/133533 ,  G02F1/133604

    摘要： Dynamic, color-changing surfaces have many applications including but not limited to displays, wearables, and active camouflage. Plasmonic nanostructures can fill this role with the advantages of ultra-small pixels, high reflectivity, and post-fabrication tuning through control of the surrounding media. However, while post-fabrication tuning have yet to cover a full red-green-blue (RGB) color basis set with a single nanostructure of singular dimensions, the present invention contemplates a novel LC-based apparatus and methods that enable such tuning and demonstrates a liquid crystal-plasmonic system that covers the full red/green/blue (RGB) color basis set, as a function only of voltage. This is accomplished through a surface morphology-induced, polarization dependent, plasmonic resonance and a combination of bulk and surface liquid crystal effects that manifest at different voltages. The resulting LC-plasmonic system provides an unprecedented color range for a single plasmonic nanostructure, eliminating the need for the three spatially static sub-pixels of current displays. The system's compatibility with existing LCD technology is possible by integrating it with a commercially available thin-film-transistor (TFT) array. The imprinted surface readily interfaces with computers to display images as well as video.

    Active ir camouflage device, plasmonic system, and related methods
    4.
    发明授权
    Active ir camouflage device, plasmonic system, and related methods 有权

    公开(公告)号：US11619837B2

    公开(公告)日：2023-04-04

    申请号：US16811250

    申请日：2020-03-06

    申请人： UNIVERSITY OF CENTRAL FLORIDA RESEARCH FOUNDATION, INC.

    发明人： Debashis Chanda ,  Sayan Chandra

    IPC分类号： G02F1/01 ,  G02F1/1524 ,  F41H3/00 ,  G02F1/21 ,  H01Q17/00

    摘要： An active IR camouflage device may include a base layer, a first dielectric layer over the base layer, a phase transition material layer over the first dielectric layer, a second dielectric layer over the phase transition material layer, and a first metal layer over the second dielectric layer and defining a pattern of openings therein. The active IR camouflage device may have circuitry configured to selectively cause a transition from a first phase state to a second phase state of the phase transition material layer to control IR reflectance/emission of a top plasmonic layer, making it appear/disappear from the IR detector/camera. In some embodiments, the active IR camouflage device may also include a second metal layer between the base layer and the first dielectric layer.

    Plasmon-assisted photothermoelectric effect based detection of infrared radiation on asymmetrically patterned graphene
    7.
    发明授权
    Plasmon-assisted photothermoelectric effect based detection of infrared radiation on asymmetrically patterned graphene 有权

    公开(公告)号：US11217738B2

    公开(公告)日：2022-01-04

    申请号：US16555449

    申请日：2019-08-29

    申请人： University of Central Florida Research Foundation, Inc.

    发明人： Debashis Chanda ,  Michael Leuenberger ,  Alireza Safaei ,  Sayan Chandra

    IPC分类号： H01L35/22 ,  G01J5/18 ,  G01J5/26

    摘要： Various methods and devices for ultrasensitive infrared photodetection, infrared imaging, and other optoelectronic applications using the plasmon assisted thermoelectric effect in graphene are described. Infrared detection by the photo-thermoelectric uses the generation of a temperature gradient (ΔT) for the efficient collection of the generated hot-carriers. An asymmetric plasmon-induced hot-carrier Seebeck photodetection scheme at room temperature exhibits a remarkable responsivity along with an ultrafast response in the technologically relevant 8-12 μm band. This is achieved by engineering the asymmetric electronic environment of the generated hot carriers on chemical vapor deposition (CVD) grown large area nanopatterned monolayer graphene, which leads to a record ΔT across the device terminals thereby enhancing the photo-thermoelectric voltage beyond the theoretical limit for graphene. The results provide a strategy for uncooled, tunable, multispectral infrared detection.

    Molecular chirality detection technique using hybrid plasmonic substrates
    8.
    发明授权
    Molecular chirality detection technique using hybrid plasmonic substrates 有权

    公开(公告)号：US10801957B2

    公开(公告)日：2020-10-13

    申请号：US16566087

    申请日：2019-09-10

    申请人： University of Central Florida Research Foundation, Inc.

    发明人： Debashis Chanda ,  Abraham Vázquez-Guardado

    IPC分类号： G01N21/552 ,  G01N21/21 ,  G01N21/35

    摘要： A method for molecular chirality detection is described. The method includes providing a substrate defining an array of hole-disks, each hole-disk coupled with an asymmetric optical cavity. Each asymmetric optical cavity having a back reflector separating a plasmonic pattern by an appropriate selection of thickness. The substrate is illuminated to simultaneously excite two degenerate localized surface plasmon modes producing a strong chiral near-field. The method may also include generating a characterization of chiral molecules on the substrate based on the strong chiral near-field. Substrates and detectors for molecular chirality detection are also described.

    MOLECULAR CHIRALITY DETECTION TECHNIQUE USING HYBRID PLASMONIC SUBSTRATES.
    9.
    发明申请
    MOLECULAR CHIRALITY DETECTION TECHNIQUE USING HYBRID PLASMONIC SUBSTRATES. 审中-公开

    公开(公告)号：US20200080937A1

    公开(公告)日：2020-03-12

    申请号：US16566087

    申请日：2019-09-10

    申请人： University of Central Florida Research Foundation, Inc.

    发明人： Debashis Chanda ,  Abraham Vázquez-Guardado

    IPC分类号： G01N21/552 ,  G01N21/21 ,  G01N21/35

    摘要： A method for molecular chirality detection is described. The method includes providing a substrate defining an array of hole-disks, each hole-disk coupled with an asymmetric optical cavity. Each asymmetric optical cavity having a back reflector separating a plasmonic pattern by an appropriate selection of thickness. The substrate is illuminated to simultaneously excite two degenerate localized surface plasmon modes producing a strong chiral near-field. The method may also include generating a characterization of chiral molecules on the substrate based on the strong chiral near-field. Substrates and detectors for molecular chirality detection are also described.