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公开(公告)号：US12117530B2
公开(公告)日：2024-10-15
申请号：US18218073
申请日：2023-07-04
Applicant: Purdue Research Foundation , THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
Inventor： Amr Mohammad E. A. Shaltout , Vladimir M. Shalaev , Mark L. Brongersma
CPC classification number: G01S17/89 , G01S7/4814 , G01S7/4817
Abstract: A laser beam steering system is disclosed which includes a laser source which produces a pulsed laser light beam with a frequency comb spectrum, a first metasurface configured to i) directly receive the pulsed laser and ii) directly generate a diffracted pulsed laser output at different frequencies with a beam at a center frequency normal to the first metasurface; and a second metasurface configured to i) directly receive the diffracted pulsed laser output and ii) to focus onto different foci at a focal plane, light propagating from the focal plane leads to generation of one or more optical beams that are controlled in space and time.
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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：US20160370316A1
公开(公告)日：2016-12-22
申请号：US15183382
申请日：2016-06-15
Applicant: PURDUE RESEARCH FOUNDATION
Inventor： Justus Chukwunonso Ndukaife , Alexandra Boltasseva , Agbai A. Nnanna , Steven Truitt Wereley , Alexander Kildishev , Vladimir M. Shalaev
IPC: G01N27/447
CPC classification number: G02B5/008
Abstract: A system and method suitable for selection, manipulation, and analysis of individual particles within a fluid medium. The system and method involve manipulating the particles by contacting the fluid medium with a plasmonic nanoantenna, illuminating the plasmonic nanoantenna with a source of light such that the plasmonic nanoantenna acts as a nanoscale heat source resulting in localized heating of the fluid medium creating local gradients in the electrical properties of the fluid medium that yield plasmonic trapping sites in the vicinity of the plasmonic nanoantenna, and applying an alternating current electric field in the fluid medium to create electrothermoplasmonic flow around the plasmonic nanoantenna. The electrothermoplasmonic flow transports at least one of the particles towards the plasmonic nanoantenna and the particle is trapped by at least one of the plasmonic trapping sites.
Abstract translation: 适用于流体介质中单个颗粒的选择，操作和分析的系统和方法。 该系统和方法涉及通过使流体介质与等离子体激元纳米天线接触来操纵颗粒，用光源照射等离子体纳米天线，使得等离子体激元纳米天线作为纳米级热源，导致流体介质的局部加热，从而产生局部梯度 在等离子体激元纳米天线附近产生等离子体俘获位点的流体介质的电性能，以及在流体介质中施加交流电场以在等离子体纳米天线周围产生电热等离子体流。 电热液体流将至少一个颗粒转移到等离子体激元纳米天线，并且颗粒被至少一个等离子体俘获位点捕获。
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公开(公告)号：US20150364898A1
公开(公告)日：2015-12-17
申请号：US14631601
申请日：2015-02-25
Applicant: PURDUE RESEARCH FOUNDATION
Inventor： Xiangeng Meng , Jingjing Liu , Alexander V. Kildeshev , Vladimir M. Shalaev
CPC classification number: H01S5/1046 , H01S5/041 , H01S5/0425 , H01S5/1067 , H01S5/183
Abstract: A sub-wavelength scale optical lasing device, for the controlled transfer of a signal in nano- and other small-scale technologies. An array of sub-wavelength size holes is first milled, or otherwise embedded, into a thin metal film. This film is combined with optically active media to compensate for losses of the metal. Optical signals are emitted in the active media, and then transferred to the metal so that surface plasmon polaritons are excited. Lasing occurs as a result of the compensation of plasmonic losses by the available optical gain.
Abstract translation: 一种亚波长范围的光学激光装置，用于在纳米级和其他小规模技术中控制信号传输。 一个亚波长尺寸的孔阵列首先被研磨或以其它方式嵌入薄金属膜中。 该膜与光学活性介质结合以补偿金属的损失。 光信号在活性介质中发射，然后转移到金属，使表面等离子体激元激发。 作为通过可用的光学增益补偿等离子体激元损耗的结果，发生激光。
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公开(公告)号：US20240345317A1
公开(公告)日：2024-10-17
申请号：US18648647
申请日：2024-04-29
Applicant: Purdue Research Foundation
Inventor： Urcan Guler , Alexander Kildishev , Vladimir M. Shalaev , Alexei S. Lagutchev , Andrey N. Smolyaninov
CPC classification number: G02B6/1226 , B82Y20/00 , Y10S977/701 , Y10S977/949 , Y10S977/95
Abstract: The invention related to single photon emission systems based on nano-diamonds. Single-photon sources have a broad range of applications in quantum communication, quantum computing and quantum metrology.
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Patent Agency Ranking
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：US20220317335A1
公开(公告)日：2022-10-06
申请号：US17713850
申请日：2022-04-05
Applicant: Purdue Research Foundation
Inventor： Vladimir M. Shalaev , Alexandra Boltasseva , Alexei Lagutchev , Alexander Senichev , Zachariah O. Martin , Demid Sychev , Samuel Peana , Xiaohui Xu
Abstract: A photon emitter includes a multi-layer film. The multi-layer film includes a first material layer and a second material layer, and the multi-layer film includes an interface surface between the first and second material layers. The first material layer includes silicon nitride. The multi-layer film is formed by positioning the silicon nitride over the second material layer and energetically activating the combination of the first material layer and the second material layer. The interface surface is operable to emit single photons.
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公开(公告)号：US20200054752A1
公开(公告)日：2020-02-20
申请号：US16665319
申请日：2019-10-28
Applicant: Purdue Research Foundation
Inventor： Urcan Guler , Alexander Kildishev , Gururaj Naik , Alexandra Boltasseva , Vladimir M. Shalaev
Abstract: Disclosed herein are nanoparticle-based plasmonic solutions to therapeutic applications employing titanium nitride (TiN) and other non-stoichiometric compounds as the plasmonic material. Current solutions are suboptimal because they require complex shapes, large particle sizes, and a narrow range of sizes, in order to achieve plasmonic resonances in the biological window. The nanoparticles discloses herein provide plasmonic resonances occurring in the biological window even with small sizes, simple shapes, and better size dispersion restrictions. Local heating efficiencies of such nanoparticles outperform currently used Au and transition metal nanoparticles. The use of smaller particles with simpler shapes and better heating efficiencies allows better diffusion properties into tumor regions, larger penetration depth of light into the biological tissue, and the ability to use excitation light of less power.
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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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