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公开(公告)号：US11733507B2
公开(公告)日：2023-08-22
申请号：US16794964
申请日：2020-02-19
Applicant: Purdue Research Foundation
Inventor： Piotr Nyga , Alexander V. Kildishev , Sarah Nahar Chowdhury , Alexandra Boltasseva , Zhaxylyk Kudyshev , Vladimir M. Shalaev
CPC classification number: G02B26/007 , G02F1/0147 , G02B2207/101 , G02F2203/10
Abstract: An optical device, wherein the optical device includes a dielectric layer over a mirror layer. The optical device further includes a plurality of plasmonic nanoparticles over the dielectric layer. Additionally, the optical device includes a protective layer over the plurality of plasmonic nanoparticles.
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公开(公告)号：US20210325577A1
公开(公告)日：2021-10-21
申请号：US17224338
申请日：2021-04-07
Applicant: Purdue Research Foundation
Inventor： Alexander V. Kildishev , Di Wang , Zhaxylyk A. Kudyshev , Maowen Song , Alexandra Boltasseva , Vladimir M. Shalaev
IPC: G02B5/00 , G11B7/125 , G11B7/1381
Abstract: A plasmonic system is disclosed. The system includes at least one polarizer that is configured to provide at least one linearly polarized broadband light beam, an anisotropic plasmonic metasurface (APM) assembly having a plurality of nanoantennae each having a predetermined orientation with respect to a global axis representing encoded digital data, the APM assembly configured to receive the at least one linearly polarized broadband light beam and by applying localized surface plasmon resonance reflect light with selectable wavelengths associated with the predetermined orientations of the nanoantennae, and at least one analyzer that is configured to receive the reflected light with selectable wavelength, wherein the relative angles between each of the at least one analyzers and each of the at least one polarizers are selectable with respect to the global axis, thereby allowing decoding of the digital data.
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公开(公告)号：US10754295B2
公开(公告)日：2020-08-25
申请号：US15957229
申请日：2018-04-19
Applicant: Purdue Research Foundation
Inventor： Amr Shaltout , Sajid Choudhury , Alexander V. Kildishev , Alexandra Boltasseva , Vladimir M. Shalaev
Abstract: A device for producing a subwavelength hologram. The device comprises a metasurface layer attached to a substrate. The metasurface layer includes an array of plasmonic antennas that simultaneously encode both wavelength and phase information of light directed through the array to produce a hologram. The wavelength is determined by the size of the antennas, and the phase is determined by the orientation of the antennas.
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公开(公告)号：US20240355602A1
公开(公告)日：2024-10-24
申请号：US18644360
申请日：2024-04-24
Applicant: Purdue Research Foundation
Inventor： Demid V. Sychev , Vladimir M. Shalaev , Alexandra Boltasseva , Peigang Chen , Morris Menghuan Yang , Colton B. Fruhling , Alexei Lagutchev , Alexander V. Kildishev
IPC: H01J43/04
CPC classification number: H01J43/04
Abstract: An ultrafast system for detecting incidence of a single photon is disclosed which includes a single photon avalanche detector having an inherent bandgap, a source of probe light configured to apply an incident beam onto the single photon avalanche detector, wherein the probe light is configured to apply energy less than the bandgap, and a probe beam detector, configured to receive a reflected probe beam from the single photon avalanche detector, wherein the probe beam detector is adapted to generate a signal signifying: i) incidence of a single photon from a control beam onto the single photon avalanche detector.
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公开(公告)号：US20220350057A1
公开(公告)日：2022-11-03
申请号：US17859665
申请日：2022-07-07
Applicant: Purdue Research Foundation
Inventor： Urcan Guler , Alberto Naldoni , Alexander V. Kildishev , Alexandra Boltasseva , Vladimir M. Shalaev
Abstract: A nanostructured material system for efficient collection of photo-excited carriers is provided. They system comprises a plurality of plasmonic metal nitride core material elements coupled to a plurality of semiconductor material elements. The plasmonic nanostructured elements form ohmic junctions at the surface of the semiconductor material or at close proximity with the semiconductor material elements. A nanostructured material system for efficient collection of photo-excited carriers is also provided, comprising a plurality of plasmonic transparent conducting oxide core material elements coupled to a plurality of semiconductor material elements. The field enhancement, local temperature increase and energized hot carriers produced by nanostructures of these plasmonic material systems play enabling roles in various chemical processes. They induce, enhance, or mediate catalytic activities in the neighborhood when excited near the resonance frequencies.
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Patent Agency Ranking
公开(公告)号：US11193829B2
公开(公告)日：2021-12-07
申请号：US16932834
申请日：2020-07-20
Applicant: Purdue Research Foundation
Inventor： Amr Mohammad E Shaltout , Alexander V. Kildishev , Vladimir M Shalaev , Jingjing Liu
Abstract: A circular dichroism spectrometer which comprises a metasurface. The metasurface has a plurality of anisotropic antennas configured to simultaneously spatially separate LCP and RCP spectral components from an incoming light beam. An optical detector array is included which detects the LCP and RCP spectral components. A transparent medium is situated between the metasurface and the optical detector array.
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公开(公告)号：US10436780B2
公开(公告)日：2019-10-08
申请号：US15174990
申请日：2016-06-06
Applicant: Purdue Research Foundation
Inventor： Justus C. Ndukaife , Alexander V. Kildishev , Agbai (George) A. Nnanna , Alexandra Boltasseva , Vladimir M. Shalaev , Steven Truitt Wereley
Abstract: A particle sensing system which includes a plurality of micro-lenses which focus light from an unfocused or loosely focused light source onto a corresponding plurality of focus regions on a surface containing plasmonic structures. The absorption of light by the plasmonic structures in the focus regions results in heat dissipation in the plasmonic structures and consequently increases surface temperature in the focus regions. When an electrical field is applied to a sample fluid in contact with the surface, multiple electrothermal flows are induced in the fluid which rapidly transport suspended particles to the focus regions on the surface. The particles can then be captured and/or sensed.
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公开(公告)号：US20150040978A1
公开(公告)日：2015-02-12
申请号：US14454709
申请日：2014-08-07
Applicant: Purdue Research Foundation
Inventor： Vladimir M. Shalaev , Alexandra Boltasseva , Mark Brongersma , Alexander V. Kildishev , Nathaniel Kinsey
IPC: H01L31/052
CPC classification number: H01L31/0543 , H01L31/022433 , H01L31/0392 , Y02E10/52
Abstract: A solar-energy module is disclosed. The module includes a first electrode configured to receive incident visible light with a different refractive index than the medium through which light travels prior to becoming incident on the first electrode, the first electrode having a first metasurface arrangement formed through the first electrode, and configured to selectively i) match the optical impedances of the first electrode and the medium, and ii) cause light to be refracted substantially away from normal refraction angle, a photon-absorbing material coupled to the first electrode on a first surface of the photon-absorbing material and configured to receive refracted light through the first electrode and adapted to produce an electrical current in response to the refracted light, length of the photon absorbing material substantially larger than thickness of the photon-absorbing material, and a second electrode coupled to the photon-absorbing material on a second surface of the photon-absorbing material.
Abstract translation: 公开了一种太阳能模块。 所述模块包括第一电极，其被配置为接收入射可见光，所述入射可见光的折射率不同于在入射到所述第一电极之前光行进的介质，所述第一电极具有通过所述第一电极形成的第一分表面布置，并且被配置为 选择性地i）匹配第一电极和介质的光阻抗，以及ii）使光线远离常规折射角折射，耦合到光子吸收材料的第一表面上的第一电极的光子吸收材料 并且被配置为接收穿过所述第一电极的折射光并且响应于所述折射光产生电流，所述光子吸收材料的长度实质上大于所述光子吸收材料的厚度，以及耦合到所述光子吸收材料的第二电极， 在光子吸收材料的第二表面上吸收材料。
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公开(公告)号：US10670772B2
公开(公告)日：2020-06-02
申请号：US15978548
申请日：2018-05-14
Applicant: Purdue Research Foundation
Inventor： Urcan Guler , Alexander V. Kildishev , Krishnakali Chaudhury , Shaimaa Azzam , Esteban E. Marinero-Caceres , Harsha Reddy , Alexandra Boltasseva , Vladimir M Shalaev
IPC: G02B1/00 , G01N21/55 , G01N21/21 , G01K11/00 , G01L11/02 , G01N22/00 , G01N21/552 , G01L1/24 , G01K11/12 , G01D5/28
Abstract: An optical sensor system, comprising refractory plasmonic elements that can withstand temperatures exceeding 2500° C. in chemically aggressive and harsh environments that impose stress, strain and vibrations. A plasmonic metamaterial or metasurface, engineered to have a specific spectral and angular response, exhibits optical reflection characteristics that are altered by varying physical environmental conditions including but not limited to temperature, surface chemistry or elastic stress, strain and other types of mechanical load. The metamaterial or metasurface comprises a set of ultra-thin structured layers with a total thickness of less than tens of microns that can be deployed onto surfaces of devices operating in harsh environmental conditions. The top interface of the metamaterial or metasurface is illuminated with a light source, either through free space or via an optical fiber, and the reflected signal is detected employing remote detectors.
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公开(公告)号：US10067326B2
公开(公告)日：2018-09-04
申请号：US14987194
申请日：2016-01-04
Applicant: Purdue Research Foundation
Inventor： Alexander V. Kildishev , Evgueni E. Narimanov
IPC: G02B19/00 , F24J2/06 , G01J1/04 , G01J5/08 , H01L31/054
Abstract: An electromagnetic black hole may be fabricated as concentric shells having a permittivity whose variation is at least as great as an inverse square dependence on the radius of the structure. Such a structure concentrates electromagnetic energy incident thereon over a broad range of angles to an operational region near the center of curvature of the structure. Devices or materials may be placed in the operational region so as to convert the electromagnetic energy to electrical signals or to heat. Applications included solar energy harvesting and heat signature detectors.
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