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公开(公告)号：US09952557B2
公开(公告)日：2018-04-24
申请号：US15152535
申请日：2016-05-11
Applicant: Purdue Research Foundation
Inventor： Amr Shaltout , Sajid Choudhury , Alexander V. Kildishev , Alexandra Boltasseva , Vladimir M. Shalaev
CPC classification number: G03H1/02 , G02B1/00 , G02B1/002 , G02F1/00 , G02F1/01 , G03H1/024 , G03H1/0244 , G03H2001/026 , G03H2001/2263 , G03H2240/11 , G03H2240/21 , H01Q15/0006 , H01Q15/10
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：US11726233B2
公开(公告)日：2023-08-15
申请号：US16835302
申请日：2020-03-31
Applicant: Purdue Research Foundation
Inventor： Urcan Guler , Alexander V. Kildishev , Krishnakali Chaudhury , Shaimaa Ibrahim Azzam , Esteban E. Marinero-Caceres , Harsha Reddy , Alexandra Boltasseva , Vladimir M. Shalaev
CPC classification number: G02B1/002 , G01N21/8422 , B82Y20/00 , B82Y30/00 , B82Y40/00 , G01N2021/8427
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：US11656386B2
公开(公告)日：2023-05-23
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
CPC classification number: G02B5/008 , 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：US20210108964A1
公开(公告)日：2021-04-15
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：US20180329115A1
公开(公告)日：2018-11-15
申请号：US15978548
申请日：2018-05-14
Applicant: Purdue Research Foundation
Inventor： Alexander V. Kildishev , Urcan Guler , Krishnakali Chaudhury , Shaimaa Azzam , Esteban E. Marinero-Caceres , Harsha Reddy , Alexandra Boltasseva , Vladimir M Shalaev
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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Patent Agency Ranking
公开(公告)号：US20180246467A1
公开(公告)日：2018-08-30
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
CPC classification number: G03H1/02 , G02B1/00 , G02B1/002 , G02F1/00 , G02F1/01 , G03H1/024 , G03H1/0244 , G03H1/0891 , G03H2001/026 , G03H2001/2263 , G03H2240/11 , G03H2240/21 , H01Q15/0006 , H01Q15/10
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：US20160147052A1
公开(公告)日：2016-05-26
申请号：US14987194
申请日：2016-01-04
Applicant: Purdue Research Foundation
Inventor： Alexander V. Kildishev , Evgueni E. Narimanov
IPC: G02B19/00 , H01L31/054
CPC classification number: G02B19/0042 , F24S23/00 , F24S23/12 , G01J1/04 , G01J1/0407 , G01J1/0422 , G01J5/08 , G01J5/0853 , G02B19/0014 , G02B19/0038 , G02B19/0076 , H01L31/054 , H01L31/0543 , Y02E10/44 , Y02E10/52 , Y10T29/49 , Y10T428/24802 , Y10T428/24942
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.
Abstract translation: 可以制造电磁黑洞作为具有介电常数的同心壳，其介电常数的变化至少与依赖于结构半径的平方平方相同。 这种结构将在其上的电磁能量集中在与结构的曲率中心附近的操作区域的宽范围的角度上。 设备或材料可以被放置在操作区域中，以将电磁能转换成电信号或加热。 应用包括太阳能收集和热标签检测器。
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18.发明授权公开(公告)号：US11808955B2
公开(公告)日：2023-11-07
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
IPC: G02B5/00 , H10K50/854 , B01J27/24 , B01J35/00 , C09C1/36 , B82Y20/00 , B01J23/00 , E06B9/24 , B01J23/72 , B01J23/40
CPC classification number: G02B5/008 , B01J27/24 , B01J35/004 , C09C1/3607 , H10K50/854 , B01J23/00 , B01J23/40 , B01J23/72 , B01J35/0013 , B82Y20/00 , E06B2009/2464 , G02F2203/10
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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公开(公告)号：US20220397702A9
公开(公告)日：2022-12-15
申请号：US16835302
申请日：2020-03-31
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
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：US20220179244A1
公开(公告)日：2022-06-09
申请号：US17387817
申请日：2021-07-28
Applicant: Purdue Research Foundation
Abstract: A time-varying optical metasurface, comprising a plurality of modulated nano-antennas configured to vary dynamically over time. The metasurface may be implemented as part of an optical isolator, wherein the time-varying metasurface provides uni-directional light flow. The metasurface allows the breakage of Lorentz reciprocity in time-reversal. The metasurface may operate in a transmission mode or a reflection mode.
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