Patents by Inventor Alexander Kildishev
Alexander 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: 11971576Abstract: A method for producing a single photon source includes lithographically patterning a polymer on top of a plasmonic thin film, functionalizing top surfaces of the plasmonic thin film and the polymer, removing the polymer to form patterned functionalized sites on the top surface of the plasmonic thin film surface, and depositing nanodiamond particles to the patterned functionalized sites.Type: GrantFiled: December 5, 2022Date of Patent: April 30, 2024Assignee: Purdue Research FoundationInventors: Urcan Guler, Alexander Kildishev, Vladimir M. Shalaev, Alexei S. Lagutchev, Andrey N. Smolyaninov
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Patent number: 11807950Abstract: A thermoplasmonic device includes a titanium film and a plurality of titanium nitride tube elements disposed on the titanium film. Each of the titanium nitride tube elements includes an open top and a titanium nitride bottom. Each of the titanium nitride tube elements has titanium nitride tubular middle portion that extends from the open top to the titanium nitride bottom.Type: GrantFiled: May 2, 2022Date of Patent: November 7, 2023Assignee: Purdue Research FoundationInventors: Vladimir M. Shalaev, Zhaxylyk Kudyshev, Alexandra Boltasseva, Alberto Naldoni, Alexander Kildishev, Luca Mascaretti, {hacek over (S)}t{hacek over (e)}phán Kment, Radek Zbo{hacek over (r)}il, Jeong Eun Yoo, Patrik Schmuki
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Publication number: 20230177642Abstract: 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.Type: ApplicationFiled: July 6, 2022Publication date: June 8, 2023Applicant: Purdue Research FoundationInventors: Zhaxylyk A. Kudyshev, Demid Sychev, Zachariah Olson Martin, Simeon I. Bogdanov, Xiaohui Xu, Alexander Kildishev, Alexandra Boltasseva, Vladimir Shalaev
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Publication number: 20230101210Abstract: A method for producing a single photon source includes lithographically patterning a polymer on top of a plasmonic thin film, functionalizing top surfaces of the plasmonic thin film and the polymer, removing the polymer to form patterned functionalized sites on the top surface of the plasmonic thin film surface, and depositing nanodiamond particles to the patterned functionalized sites.Type: ApplicationFiled: December 5, 2022Publication date: March 30, 2023Applicant: Purdue Research FoundationInventors: Urcan Guler, Alexander Kildishev, Vladimir M. Shalaev, Alexei S. Lagutchev, Andrey N. Smolyaninov
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Publication number: 20220333266Abstract: A thermoplasmonic device includes a titanium film and a plurality of titanium nitride tube elements disposed on the titanium film. Each of the titanium nitride tube elements includes an open top and a titanium nitride bottom. Each of the titanium nitride tube elements has titanium nitride tubular middle portion that extends from the open top to the titanium nitride bottom.Type: ApplicationFiled: May 2, 2022Publication date: October 20, 2022Inventors: Vladimir M. Shalaev, Zhaxylyk Kudyshev, Alexandra Boltasseva, Alberto Naldoni, Alexander Kildishev, Luca Mascaretti, Stêphán Kment, Radek Zboril, Jeong Eun Yoo, Patrik Schmuki
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Patent number: 11385386Abstract: 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: June 30, 2017Date of Patent: July 12, 2022Assignee: Purdue Research FoundationInventors: Urcan Guler, Alberto Naldoni, Alexander Kildishev, Alexandra Boltasseva, Vladimir M. Shalaev
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Patent number: 11319640Abstract: Titanium nitride (TiN) nanofurnaces are fabricated in a method that involves anodization of a titanium (Ti) foil to form TiO2 nanocavities. After anodization, the TiO2 nanocavities are converted to TiN at 600° C. under ammonia flow. The resulting structure is an array of refractory (high-temperature stable) subwavelength TiN cylindrical cavities that operate as plasmonic nanofurnaces capable of reaching temperatures above 600° C. under moderate concentrated solar irradiation. The nanofurnaces show near-unity solar absorption in the visible and near infrared spectral ranges and a maximum thermoplasmonic solar-to-heat conversion efficiency of 68 percent.Type: GrantFiled: May 3, 2020Date of Patent: May 3, 2022Assignee: Purdue Research FoundationInventors: Vladimir M. Shalaev, Zhaxylyk Kudyshev, Alexandra Boltasseva, Alberto Naldoni, Alexander Kildishev, Luca Mascaretti, Ŝtêphán Kment, Radek Zbo{circumflex over (r)}il, Jeong Eun Yoo, Patrik Schmuki
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Publication number: 20200347508Abstract: Titanium nitride (TiN) nanofurnaces are fabricated in a method that involves anodization of a titanium (Ti) foil to form TiO2 nanocavities. After anodization, the TiO2 nanocavities are converted to TiN at 600° C. under ammonia flow. The resulting structure is an array of refractory (high-temperature stable) subwavelength TiN cylindrical cavities that operate as plasmonic nanofurnaces capable of reaching temperatures above 600° C. under moderate concentrated solar irradiation. The nanofurnaces show near-unity solar absorption in the visible and near infrared spectral ranges and a maximum thermoplasmonic solar-to-heat conversion efficiency of 68 percent.Type: ApplicationFiled: May 3, 2020Publication date: November 5, 2020Inventors: Vladimir M. Shalaev, Zhaxylyk Kudyshev, Alexandra Boltasseva, Alberto Naldoni, Alexander Kildishev, Luca Mascaretti, Stephán Kment, Radek Zboril, Jeong Eun Yoo, Patrik Schmuki
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Patent number: 10760970Abstract: 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: December 26, 2018Date of Patent: September 1, 2020Assignee: Purdue Research FoundationInventors: Amr Mohammad E Shaltout, Alexander Kildishev, Vladimir Shalaev, Jingjing Liu
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Patent number: 10690817Abstract: An ultra-thin planar device is used for arbitrary waveform formation on a micrometer scale, regardless of the incident light's polarization. Patterned perforations are made in a 30 nm-thick metal film, creating discrete phase shifts and forming a desired wavefront of cross-polarized, scattered light. The signal-to-noise ratio of these devices is at least one order of magnitude higher than current metallic nano-antenna designs. The focal length of a lens built on such principle can also be adjusted by changing the wavelength of the incident light. All proposed embodiments can be embedded, for example, on a chip or at the end of an optical fiber.Type: GrantFiled: June 5, 2018Date of Patent: June 23, 2020Assignee: Purdue Research FoundationInventors: Vladimir Shalaev, Alexander Kildishev, Xingjie Ni, Satoshi Ishii
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Publication number: 20200054752Abstract: 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.Type: ApplicationFiled: October 28, 2019Publication date: February 20, 2020Applicant: Purdue Research FoundationInventors: Urcan Guler, Alexander Kildishev, Gururaj Naik, Alexandra Boltasseva, Vladimir M. Shalaev
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Publication number: 20190219447Abstract: 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: December 26, 2018Publication date: July 18, 2019Applicant: Purdue Research FoundationInventors: Amr Shaltout, Alexander Kildishev, Vladimir Shalaev, Jingjing Liu
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Publication number: 20190033496Abstract: 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: ApplicationFiled: August 7, 2018Publication date: January 31, 2019Applicant: Purdue Research FoundationInventors: Alexander Kildishev, Satoshi Ishii, Vladimir Shalaev
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Patent number: 10161797Abstract: 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 5, 2016Date of Patent: December 25, 2018Assignee: PURDUE RESEARCH FOUNDATIONInventors: Amr Shaltout, Alexander Kildishev, Vladimir Shalaev, Jingjing Liu
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Publication number: 20180292581Abstract: An ultra-thin planar device is used for arbitrary waveform formation on a micrometer scale, regardless of the incident light's polarization. Patterned perforations are made in a 30 nm-thick metal film, creating discrete phase shifts and forming a desired wavefront of cross-polarized, scattered light. The signal-to-noise ratio of these devices is at least one order of magnitude higher than current metallic nano-antenna designs. The focal length of a lens built on such principle can also be adjusted by changing the wavelength of the incident light. All proposed embodiments can be embedded, for example, on a chip or at the end of an optical fiber.Type: ApplicationFiled: June 5, 2018Publication date: October 11, 2018Applicant: Purdue Research FoundationInventors: Vladimir Shalaev, Alexander Kildishev, Xingjie Ni, Satoshi Ishii
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Patent number: 10042091Abstract: A planar optical device, comprised of sets of nanometer-scale holes milled into a thin metal or ceramic film of subwavelength thickness serves to form arbitrary waveform of light. The holes form a pattern, preferrably rings, of various sizes in order to achieve a given phase front of light due to photonic effect. When designed as a lens, the device focuses incident light into a tight focal spot. In symmetric design, the focusing property of the device does not depend on the incident polarization angle. The lens can be manufactured based on high-throughput fabrication methods and easily integrated with a chip or placed at the end of an optical fiber.Type: GrantFiled: September 26, 2013Date of Patent: August 7, 2018Assignee: PURDUE RESEARCH FOUNDATIONInventors: Alexander Kildishev, Satoshi Ishii, Vladimir Shalaev
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Patent number: 9989677Abstract: An ultra-thin planar device is used for arbitrary waveform formation on a micrometer scale, regardless of the incident light's polarization. Patterned perforations are made in a 30 nm-thick metal film, creating discrete phase shifts and forming a desired wavefront of cross-polarized, scattered light. The signal-to-noise ratio of these devices is at least one order of magnitude higher than current metallic nano-antenna designs. The focal length of a lens built on such principle can also be adjusted by changing the wavelength of the incident light. All proposed embodiments can be embedded, for example, on a chip or at the end of an optical fiber.Type: GrantFiled: September 4, 2013Date of Patent: June 5, 2018Assignee: PURDUE RESEARCH FOUNDATIONInventors: Vladimir Shalaev, Alexander Kildishev, Xingjie Ni, Satoshi Ishii
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Publication number: 20180003865Abstract: 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: June 30, 2017Publication date: January 4, 2018Applicant: Purdue Research FoundationInventors: Urcan Guler, Alberto Naldoni, Alexander Kildishev, Alexandra Boltasseva, Vladimir M. Shalaev
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Patent number: 9778400Abstract: 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.Type: GrantFiled: June 15, 2016Date of Patent: October 3, 2017Assignee: Purdue Research FoundationInventors: Justus Chukwunonso Ndukaife, Alexandra Boltasseva, Agbai A. Nnanna, Steven Truitt Wereley, Alexander Kildishev, Vladimir M. Shalaev
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Publication number: 20170235162Abstract: 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 13, 2016Publication date: August 17, 2017Applicant: Purdue Research FoundationInventors: Amr Shaltout, Alexander Kildishev, Vladimir Shalaev