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公开(公告)号：US11314108B2
公开(公告)日：2022-04-26
申请号：US16541860
申请日：2019-08-15
摘要： An apparatus includes two or more tunable antennas providing a reconfigurable metasurface, each of the tunable antennas including a plurality of pixels of optically tunable material, and a control circuit including switches providing current sources and a ground voltage, the switches being coupled to respective ones of the pixels of optically tunable material in each of the tunable antennas via first electrodes, the ground voltage being coupled to respective ones of the pixels of optically tunable material in each of the tunable antennas via second electrodes. The control circuit is configured to modify states of respective ones of the plurality of pixels of optically tunable material in the tunable antennas utilizing current supplied between the first electrodes and the second electrodes to adjust reflectivity of the plurality of pixels of optically tunable material in each of the tunable antennas to dynamically reconfigure respective antenna shape configurations of the tunable antennas.
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公开(公告)号：US11152705B2
公开(公告)日：2021-10-19
申请号：US16522297
申请日：2019-07-25
摘要： An apparatus includes two or more groups of antennas, each including two or more patches of optically tunable material providing two or more antennas. The tunable geometric metasurface also includes a control circuit including a plurality of switches providing current sources and a ground voltage. The plurality of switches are coupled to respective ones of the patches of optically tunable material in each of the groups of antennas via first electrodes. The ground voltage is coupled to respective ones of the patches of optically tunable material in each of the groups of antennas via second electrodes. The control circuit is configured to modify states of the antennas in each of the groups of antennas utilizing the first electrodes and the second electrodes to adjust reflectivity of the patches of optically tunable material to provide a tunable geometric metasurface.
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公开(公告)号：US20200041409A1
公开(公告)日：2020-02-06
申请号：US16653715
申请日：2019-10-15
发明人： Abram L. Falk , Damon B. Farmer , Shu-Jen Han
IPC分类号： G01N21/552 , G01N21/3504
摘要： Differential, plasmonic, non-dispersive infrared gas sensors are provided. In one aspect, a gas sensor includes: a plasmonic resonance detector including a differential plasmon resonator array that is resonant at different wavelengths of light; and a light source incident on the plasmonic resonance detector. The differential plasmon resonator array can include: at least one first set of plasmonic resonators interwoven with at least one second set of plasmonic resonators, wherein the at least one first set of plasmonic resonators is configured to be resonant with light at a first wavelength, and wherein the at least one second set of plasmonic resonators is configured to be resonant with light at a second wavelength. A method for analyzing a target gas and a method for forming a plasmonic resonance detector are also provided.
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公开(公告)号：US20200006690A1
公开(公告)日：2020-01-02
申请号：US16022969
申请日：2018-06-29
发明人： Abram L. Falk , Damon B. Farmer
摘要： A semiconductor device includes a ribbon of a thickness and a width. A material of the ribbon is configured to host excitons as well as plasmons, and the width is an inverse function of a wavector value at which an energy level of plasmons in the material substantially equals an energy level of excitons in the material. The substantially equal energies of the plasmons and the excitons in the ribbon cause an excitation of intrinsic plasmon-exciton polaritons (IPEPs) in the ribbon. A first contact electrically couples to a first location on the ribbon, and a second contact electrically couples to a second location on the ribbon.
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公开(公告)号：US20190234800A1
公开(公告)日：2019-08-01
申请号：US16380042
申请日：2019-04-10
CPC分类号： G01J5/0018 , G01J5/023 , G01J5/046 , G01J5/0862 , G01J5/20 , G01J5/602 , G01J2005/0051 , G01J2005/0074 , G01J2005/0077
摘要： A computer-implemented method of forming a thermal-based electronic image of an object that includes receiving electromagnetic radiation emitted by the object at an optically sensitive layer including a superpixel having a plurality of pixels. Each pixel of the plurality of pixels includes a plasmonic absorber having a characteristic resonance wavelength and that generates a radiance measurement of the electromagnetic radiation at its characteristic resonance wavelength. The method further provides for determining, at a processor, an emissivity and temperature for the electromagnetic radiation received at the superpixel using the radiance measurements obtained at the pixels of the superpixel. In addition, the method provides for forming an image of the object from the determined emissivity and temperature.
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公开(公告)号：US20190137392A1
公开(公告)日：2019-05-09
申请号：US16238890
申请日：2019-01-03
IPC分类号： G01N21/552
摘要： A method of forming a chemical sensor includes forming a dielectric layer on an electrode. A carbon nanotube film is deposited on the dielectric layer. The carbon nanotube film is patterned into strips.
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公开(公告)号：US20210336345A1
公开(公告)日：2021-10-28
申请号：US17371975
申请日：2021-07-09
摘要： A semiconductor structure comprises a substrate, a patch of optically tunable material disposed over the substrate, a first electrode coupled to the patch of optically tunable material and a switch providing a current source, and a second electrode coupled to the patch of optically tunable material and a ground voltage. The first electrode and the second electrode are configured to modify a state of the patch of optically tunable material to adjust a reflectivity of the patch of optically tunable material.
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公开(公告)号：US11150184B2
公开(公告)日：2021-10-19
申请号：US16653715
申请日：2019-10-15
发明人： Abram L. Falk , Damon B. Farmer , Shu-Jen Han
IPC分类号： G01N21/552 , G01N21/3504
摘要： Differential, plasmonic, non-dispersive infrared gas sensors are provided. In one aspect, a gas sensor includes: a plasmonic resonance detector including a differential plasmon resonator array that is resonant at different wavelengths of light; and a light source incident on the plasmonic resonance detector. The differential plasmon resonator array can include: at least one first set of plasmonic resonators interwoven with at least one second set of plasmonic resonators, wherein the at least one first set of plasmonic resonators is configured to be resonant with light at a first wavelength, and wherein the at least one second set of plasmonic resonators is configured to be resonant with light at a second wavelength. A method for analyzing a target gas and a method for forming a plasmonic resonance detector are also provided.
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公开(公告)号：US20210050515A1
公开(公告)日：2021-02-18
申请号：US16541866
申请日：2019-08-15
摘要： An apparatus includes two or more electrically rotatable antennas providing a reconfigurable metasurface, each of the electrically rotatable antennas including a disk of optically tunable material. The apparatus also includes a control circuit including a plurality of switches each coupled to (i) one of a plurality of electrodes, the plurality of electrodes being arranged proximate different portions of at least one surface of each of the disks of optically tunable material and (ii) to at least one of a current source and a ground voltage. The control circuit is configured to modify states of portions of the optically tunable material in each of the disks of optically tunable material utilizing current supplied between at least two of the plurality of electrodes to adjust reflectivity of the portions of the optically tunable material to dynamically reconfigure respective antenna shape configurations of each of the electrically rotatable antennas.
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公开(公告)号：US10578577B2
公开(公告)日：2020-03-03
申请号：US15635447
申请日：2017-06-28
发明人： Ali Afzali-Ardakani , Abram L. Falk , Bharat Kumar
IPC分类号： G01N33/84 , G01N27/414 , H01L29/06 , H01L29/66 , G01N33/487
摘要： Embodiments of the invention are directed to a solid-state zinc sensor. A non-limiting example of the sensor includes a semiconductor substrate. The sensor can also include an assembly surface on the semiconductor substrate. The sensor can also include a zinc detection monolayer chemically bound to the assembly surface. The sensor can also include a power supply electrically connected to the semiconductor substrate.
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