Patents by Inventor Alexandra Boltasseva
Alexandra Boltasseva 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: 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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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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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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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: 20220406962Abstract: Methods of fabricating single photon emitters (SPEs) including nanoindentation of hexagonal boron nitride (hBN) host materials and annealing thereof, devices formed from such methods, and chips with a single photon emitter. A substrate with a layer of hBN is provided. Nanoindentation is performed on the layer of hBN to produce an array of sub-micron indentations in the layer of hBN. The layer of hBN is annealed to activate SPEs near the indentations. Devices include a substrate with an SPE produced in accordance with the methods. Chips include a substrate, an hBN layer, and an SPE including an indentation on the hBN layer, in which the substrate is not damaged at the indentation.Type: ApplicationFiled: June 21, 2022Publication date: December 22, 2022Inventors: Xiaohui Xu, Zachariah Olson Martin, Demid Sychev, Alexei S. Lagutchev, Yong Chen, Vladimir Michael Shalaev, Alexandra Boltasseva
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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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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: 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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Publication number: 20220317335Abstract: 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.Type: ApplicationFiled: April 5, 2022Publication date: October 6, 2022Inventors: Vladimir M. Shalaev, Alexandra Boltasseva, Alexei Lagutchev, Alexander Senichev, Zachariah O. Martin, Demid Sychev, Samuel Peana, Xiaohui Xu
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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: 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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Patent number: 11119042Abstract: 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.Type: GrantFiled: August 11, 2020Date of Patent: September 14, 2021Assignee: Purdue Research FoundationInventors: Aveek Dutta, Vladimir M. Shalaev, Alexandra Boltasseva, Esteban E. Marinero-Caceres
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Patent number: 10876946Abstract: 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.Type: GrantFiled: December 17, 2019Date of Patent: December 29, 2020Assignee: Purdue Research FoundationInventors: Justus C. Ndukaife, Alexandra Boltasseva, Agbai Nnanna
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Publication number: 20200371026Abstract: 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.Type: ApplicationFiled: August 11, 2020Publication date: November 26, 2020Applicant: Purdue Research FoundationInventors: Aveek Dutta, Vladimir M. Shalaev, Alexandra Boltasseva, Esteban E. Marinero-Caceres
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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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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