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.

公开(公告)号：US20230177642A1

公开(公告)日：2023-06-08

申请号：US17858722

申请日：2022-07-06

Applicant: Purdue Research Foundation

Inventor： Zhaxylyk A. Kudyshev ,  Demid Sychev ,  Zachariah Olson Martin ,  Simeon I. Bogdanov ,  Xiaohui Xu ,  Alexander Kildishev ,  Alexandra Boltasseva ,  Vladimir Shalaev

IPC: G06T3/40 ,  G02B21/00

CPC classification number: G06T3/4053 ,  G06T3/4046 ,  G02B21/0072

Abstract: A method of providing super-resolved images of a photon emitting particle is disclosed, which includes providing a machine-learning (ML) platform, wherein the ML platform is configured to receive pixel-based sparse autocorrelation data and generate a predicted super-resolved image of a photon emitting particle, receiving photons from the photon emitting particle by two or more photon detectors, each generating an electrical pulse associated with receiving an incident photon thereon, generating sparse autocorrelation data from the two or more photon detectors for each pixel within an image area, and inputting the pixel-based sparse autocorrelation data to the ML platform, thereby generating a predicted super-resolved image of the imaging area, wherein the resolution of the super-resolved image is improved by √n as compared to a classical optical microscope limited by Abbe diffraction limit.

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

IPC: G02B1/00 ,  G01N21/84

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.

公开(公告)号：US20210302623A1

公开(公告)日：2021-09-30

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

IPC: G02B1/00 ,  G01N21/84

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.

公开(公告)号：US20200371026A1

公开(公告)日：2020-11-26

申请号：US16990754

申请日：2020-08-11

Applicant: Purdue Research Foundation

Inventor： Aveek Dutta ,  Vladimir M. Shalaev ,  Alexandra Boltasseva ,  Esteban E. Marinero-Caceres

IPC: G01N21/552 ,  G01N21/01 ,  G01R33/12

Abstract: A system of writing to and reading from a magnetic nanostructure is disclosed which includes an opto-magnetic write arrangement including a polarizer configured to receive incident light and provide a circularly or linearly polarized light, wherein light polarization is controlled by the polarizer and its orientation with respect to polarization of the incident light, a nanomagnetic structure configured to receive the polarized light including a substrate, and a nanomagnetic stack including a nanomagnet, and a capping layer, wherein the nanomagnetic stack is configured to receive the polarized light and thereby switch orientation of a magnetic moment associated with the magnetic nanostructure whereby the magnetic moment direction specifies a bit value held in the magnetic structure, and a magnetic read arrangement, configured to receive and interpret an optical signal from the magnetic nanostructure indicating the magnetic moment orientation from the nanomagnetic stack.

公开(公告)号：US20200285043A1

公开(公告)日：2020-09-10

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

IPC: G02B26/00 ,  G02F1/01

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.

公开(公告)号：US10508981B2

公开(公告)日：2019-12-17

申请号：US16248758

申请日：2019-01-15

Applicant: Purdue Research Foundation

Inventor： Justus C Ndukaife ,  Alexandra Boltasseva ,  Agbai Nnanna

IPC: G01N15/00 ,  G02B5/00 ,  G21K1/00 ,  B82Y30/00 ,  B01L3/00 ,  B82Y20/00

Abstract: An apparatus for trapping and sensing nanoparticles using plasmonic nanopores, comprising a conductive transparent layer, a conductive film layer mounted to a substrate, the film layer comprising a plurality of nanopores for trapping nanoparticles contained in a fluid situated between the conductive transparent layer and the conductive film layer, and an electric field source connected between the transparent layer and the film layer.

公开(公告)号：US20190353830A1

公开(公告)日：2019-11-21

申请号：US16411038

申请日：2019-05-13

Applicant: Purdue Research Foundation

Inventor： Alexander V. Kildishev ,  Di Wang ,  Zhaxylyk A. Kudyshev ,  Maowen Song ,  Alexandra Boltasseva ,  Vladimir M. Shalaev

IPC: G02B5/00 ,  G11B7/1381 ,  G11B7/125

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 nano antennae, 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.

公开(公告)号：US10180383B2

公开(公告)日：2019-01-15

申请号：US15476868

申请日：2017-03-31

Applicant: Purdue Research Foundation

Inventor： Justus C Ndukaife ,  Alexandra Boltasseva ,  Agbai Nnanna

IPC: G21K1/00 ,  G01N15/00 ,  G02B5/00 ,  B82Y30/00

Abstract: An apparatus for trapping and sensing nanoparticles using plasmonic nanopores, comprising a conductive transparent layer, a conductive film layer mounted to a substrate, the film layer comprising a plurality of nanopores for trapping nanoparticles contained in a fluid situated between the conductive transparent layer and the conductive film layer, and an electric field source connected between the transparent layer and the film layer.

公开(公告)号：US09778400B2

公开(公告)日：2017-10-03

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: G01N27/00 ,  G02B5/00

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.