Patents by Inventor Alexander V. Kildishev
Alexander V. Kildishev has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11808955Abstract: 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.Type: GrantFiled: July 7, 2022Date of Patent: November 7, 2023Assignee: Purdue Research FoundationInventors: Urcan Guler, Alberto Naldoni, Alexander V. Kildishev, Alexandra Boltasseva, Vladimir M. Shalaev
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Patent number: 11733507Abstract: 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.Type: GrantFiled: February 19, 2020Date of Patent: August 22, 2023Assignee: Purdue Research FoundationInventors: Piotr Nyga, Alexander V. Kildishev, Sarah Nahar Chowdhury, Alexandra Boltasseva, Zhaxylyk Kudyshev, Vladimir M. Shalaev
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Patent number: 11726233Abstract: 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.Type: GrantFiled: March 31, 2020Date of Patent: August 15, 2023Assignee: Purdue Research FoundationInventors: Urcan Guler, Alexander V. Kildishev, Krishnakali Chaudhury, Shaimaa Ibrahim Azzam, Esteban E. Marinero-Caceres, Harsha Reddy, Alexandra Boltasseva, Vladimir M. Shalaev
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Patent number: 11656386Abstract: 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.Type: GrantFiled: April 7, 2021Date of Patent: May 23, 2023Assignee: Purdue Research FoundationInventors: Alexander V. Kildishev, Di Wang, Zhaxylyk A. Kudyshev, Maowen Song, Alexandra Boltasseva, Vladimir M. Shalaev
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Publication number: 20220397702Abstract: 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.Type: ApplicationFiled: March 31, 2020Publication date: December 15, 2022Applicant: Purdue Research FoundationInventors: Urcan Guler, Alexander V. Kildishev, Krishnakali Chaudhury, Shaimaa Azzam, Esteban E. Marinero-Caceres, Harsha Reddy, Alexandra Boltasseva, Vladimir M. Shalaev
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Patent number: 11520105Abstract: 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.Type: GrantFiled: November 5, 2015Date of Patent: December 6, 2022Assignee: Purdue Research FoundationInventors: Urcan Guler, Alexander V Kildishev, Vladimir M Shalaev, Alexei S. Lagutchev, Andrey N. Smolyaninov
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Publication number: 20220350057Abstract: 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.Type: ApplicationFiled: July 7, 2022Publication date: November 3, 2022Applicant: Purdue Research FoundationInventors: Urcan Guler, Alberto Naldoni, Alexander V. Kildishev, Alexandra Boltasseva, Vladimir M. Shalaev
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Publication number: 20220179244Abstract: 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.Type: ApplicationFiled: July 28, 2021Publication date: June 9, 2022Applicant: Purdue Research FoundationInventors: Amr Mohammad E. Shaltout, Alexander V. Kildishev, Vladimir M. Shalaev
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Patent number: 11193829Abstract: 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.Type: GrantFiled: July 20, 2020Date of Patent: December 7, 2021Assignee: Purdue Research FoundationInventors: Amr Mohammad E Shaltout, Alexander V. Kildishev, Vladimir M Shalaev, Jingjing Liu
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Publication number: 20210325577Abstract: 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.Type: ApplicationFiled: April 7, 2021Publication date: October 21, 2021Applicant: Purdue Research FoundationInventors: Alexander V. Kildishev, Di Wang, Zhaxylyk A. Kudyshev, Maowen Song, Alexandra Boltasseva, Vladimir M. Shalaev
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Publication number: 20210302623Abstract: 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.Type: ApplicationFiled: March 31, 2020Publication date: September 30, 2021Applicant: Purdue Research FoundationInventors: Urcan Guler, Alexander V. Kildishev, Krishnakali Chaudhury, Shaimaa Azzam, Esteban E. Marinero-Caceres, Harsha Reddy, Alexandra Boltasseva, Vladimir M. Shalaev
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Publication number: 20210108964Abstract: 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.Type: ApplicationFiled: July 20, 2020Publication date: April 15, 2021Applicant: Purdue Research FoundationInventors: Amr Mohammad E Shaltout, Alexander V. Kildishev, Vladimir M Shalaev, Jingjing Liu
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Publication number: 20200285043Abstract: 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.Type: ApplicationFiled: February 19, 2020Publication date: September 10, 2020Applicant: Purdue Research FoundationInventors: Piotr Nyga, Alexander V. Kildishev, Sarah Nahar Chowdhury, Alexandra Boltasseva, Zhaxylyk Kudyshev, Vladimir M. Shalaev
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Patent number: 10754295Abstract: 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.Type: GrantFiled: April 19, 2018Date of Patent: August 25, 2020Assignee: Purdue Research FoundationInventors: Amr Shaltout, Sajid Choudhury, Alexander V. Kildishev, Alexandra Boltasseva, Vladimir M. Shalaev
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Patent number: 10670772Abstract: 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.Type: GrantFiled: May 14, 2018Date of Patent: June 2, 2020Assignee: Purdue Research FoundationInventors: Urcan Guler, Alexander V. Kildishev, Krishnakali Chaudhury, Shaimaa Azzam, Esteban E. Marinero-Caceres, Harsha Reddy, Alexandra Boltasseva, Vladimir M Shalaev
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Patent number: 10641930Abstract: A method of making an optical device including forming a plurality of holes with varying radii milled vertically into a film, wherein said holes form a pattern. The radius of each hole determines an effective refractive index for said hole. The effective refractive index modifies a phase and an intensity of an incoming electromagnetic radiation as the radiation propagates through said hole. The device is configured to be operating equally for each linearly polarized radiation simultaneously, wherein the each linearly polarized radiation is normally incident on the device.Type: GrantFiled: August 7, 2018Date of Patent: May 5, 2020Assignee: Purdue Research FoundationInventors: Alexander V. Kildishev, Satoshi Ishii, Vladimir M. Shalaev
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Publication number: 20190353830Abstract: 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.Type: ApplicationFiled: May 13, 2019Publication date: November 21, 2019Applicant: Purdue Research FoundationInventors: Alexander V. Kildishev, Di Wang, Zhaxylyk A. Kudyshev, Maowen Song, Alexandra Boltasseva, Vladimir M. Shalaev
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Patent number: 10436780Abstract: 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.Type: GrantFiled: June 6, 2016Date of Patent: October 8, 2019Assignee: PURDUE RESEARCH FOUNDATIONInventors: Justus C. Ndukaife, Alexander V. Kildishev, Agbai (George) A. Nnanna, Alexandra Boltasseva, Vladimir M. Shalaev, Steven Truitt Wereley
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Publication number: 20180329115Abstract: 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.Type: ApplicationFiled: May 14, 2018Publication date: November 15, 2018Applicant: Purdue Research FoundationInventors: Alexander V. Kildishev, Urcan Guler, Krishnakali Chaudhury, Shaimaa Azzam, Esteban E. Marinero-Caceres, Harsha Reddy, Alexandra Boltasseva, Vladimir M Shalaev
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Patent number: 10067326Abstract: 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.Type: GrantFiled: January 4, 2016Date of Patent: September 4, 2018Assignee: PURDUE RESEARCH FOUNDATIONInventors: Alexander V. Kildishev, Evgueni E. Narimanov