Patents by Inventor Kyung-Ah Son
Kyung-Ah Son 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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Publication number: 20240136429Abstract: A transition metal dichalcogenide (TMD) transistor includes a substrate, an n-type two-dimensional (2D) TMD layer, a metal source electrode, a metal drain electrode, and a gate dielectric. The substrate has a top portion that is an insulating layer, and the n-type 2D TMD layer is on the insulating layer. The metal source electrode, the metal drain electrode, and the gate dielectric are on the n-type 2D TMD layer. The metal gate electrode is on top of the gate dielectric and is between the metal source electrode and the metal drain electrode.Type: ApplicationFiled: October 18, 2022Publication date: April 25, 2024Applicant: HRL Laboratories, LLCInventors: Kyung-Ah SON, Jeong-Sun MOON, Hwa Chang SEO
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Patent number: 11953801Abstract: A solid state optical beam steering device including a body of electro-optical material wherein the body of electro-optical material comprises any material of a class of hydrogen-doped phase-change metal oxide and wherein the body has a first face and a second face opposite the first face, a first transparent resistive sheet on the first face of the body of electro optic material, wherein the first transparent resistive sheet has a first side and a second side, and a transparent conductor on the second face of the body of electro optic material, wherein the transparent conductor is coupled to the second side of the first transparent resistive sheet.Type: GrantFiled: March 19, 2021Date of Patent: April 9, 2024Assignee: HRL LABORATORIES, LLCInventors: Richard Kremer, Kyung-Ah Son, Jeong-Sun Moon, Ryan Quarfoth
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Patent number: 11808937Abstract: A method of providing a spatial light modulator comprising: providing a substrate; providing a first phase change material cell on the substrate, the first phase change material cell comprising: a first electrical heater on the substrate; a first optical reflector layer on the electrical heater; and a first phase change material layer on the optical reflector layer; and providing at least a second phase change material cell on the substrate, the second phase change material cell comprising: a second electrical heater on the substrate; a second optical reflector layer on the second electrical heater; a second phase change material layer on the second optical reflector layer; and providing a light absorber layer between the first phase change material cell and the second phase change material cell.Type: GrantFiled: October 27, 2021Date of Patent: November 7, 2023Assignee: HRL LABORATORIES, LLCInventors: Jeong-Sun Moon, Hwa Chang Seo, Kyung-Ah Son, Kangmu Lee
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Patent number: 11788183Abstract: A process enables growing thick stoichiometric crystalline and preferably IR-transparent optical PCMO material on Si and other substrates. Sputter deposition is carried out in oxygen-free inert gas (e.g., Ar) environment, which helps to prevent decomposition of the PCMO material over the substrate. In the disclosed process, there is no need to add a seed layer prior to PCMO deposition. Moreover, no post-deposition annealing is needed in a high-temperature and high-pressure oxygen furnace, but an anneal provides certain additional benefits in terms of improved transparency at IR wavelengths. Over a long deposition time for a thick PCMO film on the high temperature (?450° C.) substrates, the PCMO deposition is made repeated cycles of deposition of the PCMO material at the high temperature, each deposition cycle being followed by cooling the PCMO-deposited substrate to a substantially lower temperature (<50° C.).Type: GrantFiled: March 19, 2021Date of Patent: October 17, 2023Assignee: HRL LABORATORIES, LLCInventors: Kyung-Ah Son, Jeong-Sun Moon, Hwa Chang Seo, Richard M. Kremer, Ryan G. Quarfoth, Jack A. Crowell, Mariano J. Taboada, Joshua M. Doria, Terry B. Welch
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Patent number: 11569367Abstract: A field effect transistor includes a substrate, a passivation layer on the substrate forming a passivated substrate, wherein the passivation layer is inert to XeF2, and a graphene lateral heterostructure field effect transistor (LHFET) on the passivated substrate.Type: GrantFiled: April 27, 2021Date of Patent: January 31, 2023Assignee: HRL LABORATORIES, LLCInventors: Kyung-Ah Son, Jeong-Sun Moon, Hwa Chang Seo
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Publication number: 20220389561Abstract: A process enables growing thick stoichiometric crystalline and preferably IR-transparent optical PCMO material on Si and other substrates. Sputter deposition is carried out in oxygen-free inert gas (e.g., Ar) environment, which helps to prevent decomposition of the PCMO material over the substrate. In the disclosed process, there is no need to add a seed layer prior to PCMO deposition. Moreover, no post-deposition annealing is needed in a high-temperature and high-pressure oxygen furnace, but an anneal provides certain additional benefits in terms of improved transparency at IR wavelengths. Over a long deposition time for a thick PCMO film on the high temperature (?450° C.) substrates, the PCMO deposition is made repeated cycles of deposition of the PCMO material at the high temperature, each deposition cycle being followed by cooling the PCMO-deposited substrate to a substantially lower temperature (<50° C.).Type: ApplicationFiled: August 18, 2022Publication date: December 8, 2022Applicant: HRL Laboratories, LLCInventors: Kyung-Ah SON, Jeong-Sun MOON, Hwa Chang SEO, Richard M. KREMER, Ryan G. QUARFOTH, Jack A. CROWELL, Mariano J. TABOADA, Joshua M. DORIA, Terry B. WELCH
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Patent number: 11493824Abstract: A solid state electrically variable focal length lens includes a plurality of concentric rings of electro-optical material, wherein the electro-optical material comprises any material of a class of hydrogen-doped phase-change metal oxide and wherein each respective concentric ring further includes a transparent resistive sheet on a first face of the respective concentric ring, wherein the transparent resistive sheet extends along the first face, and a first voltage coupled between a first end and a second end of the transparent resistive sheet, wherein the first voltage may be varied to select an optical beam deflection angle.Type: GrantFiled: March 2, 2021Date of Patent: November 8, 2022Assignee: HRL LABORATORIES, LLCInventors: Richard Kremer, Kyung-Ah Son, Jeong-Sun Moon, Ryan G. Quarfoth
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Publication number: 20220308419Abstract: A solid state electrically variable focal length lens includes a plurality of concentric rings of electro-optical material, wherein the electro-optical material comprises any material of a class of hydrogen-doped phase-change metal oxide and wherein each respective concentric ring further includes a transparent resistive sheet on a first face of the respective concentric ring, wherein the transparent resistive sheet extends along the first face, and a first voltage coupled between a first end and a second end of the transparent resistive sheet, wherein the first voltage may be varied to select an optical beam deflection angle.Type: ApplicationFiled: March 2, 2021Publication date: September 29, 2022Applicant: HRL Laboratories, LLCInventors: Richard KREMER, Kyung-Ah SON, Jeong-Sun MOON, Ryan G. QUARFOTH
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Patent number: 11187891Abstract: A spatial light modulator includes a substrate, a phase change material cell on the substrate, the phase change material cell including an electrical heater on the substrate, an optical reflector layer on the electrical heater, and a phase change material layer on the optical reflector layer.Type: GrantFiled: April 10, 2018Date of Patent: November 30, 2021Assignee: HRL Laboratories, LLCInventors: Jeong-Sun Moon, Hwa Chang Seo, Kyung-Ah Son, Kangmu Lee
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Publication number: 20210364881Abstract: A solid state optical beam steering device including a body of electro-optical material wherein the body of electro-optical material comprises any material of a class of hydrogen-doped phase-change metal oxide and wherein the body has a first face and a second face opposite the first face, a first transparent resistive sheet on the first face of the body of electro optic material, wherein the first transparent resistive sheet has a first side and a second side, and a transparent conductor on the second face of the body of electro optic material, wherein the transparent conductor is coupled to the second side of the first transparent resistive sheet.Type: ApplicationFiled: March 19, 2021Publication date: November 25, 2021Applicant: HRL Laboratories, LLCInventors: Richard KREMER, Kyung-Ah Son, Jeong-Sun Moon, Ryan Quarfoth
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Publication number: 20210363629Abstract: A process enables growing thick stoichiometric crystalline and preferably IR-transparent optical PCMO material on Si and other substrates. Sputter deposition is carried out in oxygen-free inert gas (e.g., Ar) environment, which helps to prevent decomposition of the PCMO material over the substrate. In the disclosed process, there is no need to add a seed layer prior to PCMO deposition. Moreover, no post-deposition annealing is needed in a high-temperature and high-pressure oxygen furnace, but an anneal provides certain additional benefits in terms of improved transparency at IR wavelengths. Over a long deposition time for a thick PCMO film on the high temperature (?450° C.) substrates, the PCMO deposition is made repeated cycles of deposition of the PCMO material at the high temperature, each deposition cycle being followed by cooling the PCMO-deposited substrate to a substantially lower temperature (<50° C.).Type: ApplicationFiled: March 19, 2021Publication date: November 25, 2021Applicant: HRL Laboratories, LLCInventors: Kyung-Ah SON, Jeong-Sun MOON, Hwa Chang SEO, Richard M. KREMER, Ryan G. QUARFOTH, Jack A. CROWELL, Mariano J. TABOADA, Joshua M. DORIA, Terry B. WELCH
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Publication number: 20210364884Abstract: A solid state electrically variable focal length lens includes a plurality of concentric rings of electro-optical material, wherein the electro-optical material comprises any material of a class of hydrogen-doped phase-change metal oxide and wherein each respective concentric ring further includes a transparent resistive sheet on a first face of the respective concentric ring, wherein the transparent resistive sheet extends along the first face, and a first voltage coupled between a first end and a second end of the transparent resistive sheet, wherein the first voltage may be varied to select an optical beam deflection angle.Type: ApplicationFiled: March 2, 2021Publication date: November 25, 2021Applicant: HRL Laboratories, LLCInventors: Richard KREMER, Kyung-Ah SON, Jeong-Sun MOON, Ryan G. QUARFOTH
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Patent number: 10955720Abstract: An optical apparatus may comprise: an electrically reconfigurable optical layer comprising at least one phase-change material, wherein an optical property of the phase-change material is reconfigurable by an electric field; an optically transparent top electrode and a bottom electrode, the top and bottom electrodes configured to apply the electric field to the electrically reconfigurable optical layer, wherein the electrically reconfigurable optical layer is disposed between the optically transparent top electrode and the bottom electrode; and a colossal-K dielectric layer disposed between the electrically reconfigurable optical layer and the bottom electrode. The phase-change material of the electrically reconfigurable optical layer may comprise phase-change nickelate or tungsten oxide. The phase-change material of the electrically reconfigurable optical layer may have a perovskite structure.Type: GrantFiled: March 7, 2019Date of Patent: March 23, 2021Assignee: HRL Laboratories, LLCInventors: Kyung-Ah Son, Jeong-Sun Moon, Ryan G. Quarfoth
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Patent number: 10559694Abstract: A device including a biopolymer membrane, a passivation layer on the biopolymer membrane, a graphene layer on the passivation layer, a source electrode on the graphene layer, and a drain electrode on the graphene layer, wherein the graphene layer extends between the source electrode and the drain electrode.Type: GrantFiled: May 9, 2017Date of Patent: February 11, 2020Assignee: HRL Laboratories, LLCInventors: Kyung-Ah Son, Baohua Yang, Hwa Chang Seo, Danny Wong, Jeong-Sun Moon
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Publication number: 20190278150Abstract: An optical apparatus may comprise: an electrically reconfigurable optical layer comprising at least one phase-change material, wherein an optical property of the phase-change material is reconfigurable by an electric field; an optically transparent top electrode and a bottom electrode, the top and bottom electrodes configured to apply the electric field to the electrically reconfigurable optical layer, wherein the electrically reconfigurable optical layer is disposed between the optically transparent top electrode and the bottom electrode; and a colossal-K dielectric layer disposed between the electrically reconfigurable optical layer and the bottom electrode. The phase-change material of the electrically reconfigurable optical layer may comprise phase-change nickelate or tungsten oxide. The phase-change material of the electrically reconfigurable optical layer may have a perovskite structure.Type: ApplicationFiled: March 7, 2019Publication date: September 12, 2019Inventors: Kyung-Ah Son, Jeong-Sun Moon, Ryan G. Quarfoth
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Patent number: 9880148Abstract: A neuroelectric sensor and stimulator system includes a first antenna, a reader coupled to the first antenna for transmitting stimulation controls and power to a second antenna, and for receiving sensor data transmitted from the second antenna via the first antenna, and at least one neuroelectric sensor stimulator array including the second antenna, a rectifier coupled to the second antenna for extracting power transmitted from the first antenna, a controller coupled to the second antenna for decoding controls transmitted from the first antenna to the second antenna for the neuroelectric sensor stimulator array, a plurality of sensors, a multiplexer coupled to the controller and to the plurality of sensors for selecting a single sensor, and a plurality of stimulators coupled to the controller for stimulating neurons, wherein the rectifier, the controller, the plurality of sensors, the multiplexer, and the plurality of stimulators include graphene.Type: GrantFiled: April 3, 2017Date of Patent: January 30, 2018Assignee: HRL Laboratories, LLCInventors: Kyung-Ah Son, Jeong-Sun Moon, Zhiwei A. Xu, Brian N. Limketkai, Jongchan Kang, Tahir Hussain
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Patent number: 9812595Abstract: A method for fabricating an optically transparent conductor including depositing a plurality of metal nanowires on a substrate, annealing or illuminating the plurality of metal nanowires to thermally or optically fuse nanowire junctions between metal nanowires to form a metal nanowire network, disposing a graphene layer over the metal nanowire network to form a nanohybrid layer comprising the graphene layer and the metal nanowire network, depositing a dielectric passivation layer over the nanohybrid layer, patterning the dielectric passivation layer using lithography, printing, or any other method of patterning to define an area for the optically transparent conductor, and etching the patterned dielectric passivation layer to define the optically transparent conductor.Type: GrantFiled: November 22, 2016Date of Patent: November 7, 2017Assignee: HRL Laboratories, LLCInventor: Kyung-Ah Son
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Patent number: 9679970Abstract: A device including a biopolymer membrane, a passivation layer on the biopolymer membrane, a graphene layer on the passivation layer, a source electrode on the graphene layer, and a drain electrode on the graphene layer, wherein the graphene layer extends between the source electrode and the drain electrode.Type: GrantFiled: December 10, 2015Date of Patent: June 13, 2017Assignee: HRL Laboratories, LLCInventors: Kyung-Ah Son, Baohua Yang, Hwa Chang Seo, Danny Wong, Jeong-Sun Moon
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Patent number: 9662498Abstract: A neuroelectric sensor and stimulator system includes a first antenna, a reader coupled to the first antenna for transmitting stimulation controls and power to a second antenna, and for receiving sensor data transmitted from the second antenna via the first antenna, and at least one neuroelectric sensor stimulator array including the second antenna, a rectifier coupled to the second antenna for extracting power transmitted from the first antenna, a controller coupled to the second antenna for decoding controls transmitted from the first antenna to the second antenna for the neuroelectric sensor stimulator array, a plurality of sensors, a multiplexer coupled to the controller and to the plurality of sensors for selecting a single sensor, and a plurality of stimulators coupled to the controller for stimulating neurons, wherein the rectifier, the controller, the plurality of sensors, the multiplexer, and the plurality of stimulators include graphene.Type: GrantFiled: March 26, 2015Date of Patent: May 30, 2017Assignee: HRL Laboratories, LLCInventors: Kyung-Ah Son, Jeong-Sun Moon, Zhiwei A. Xu, Brian N. Limketkai, Jongchan Kang, Tahir Hussain
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Wide-band transparent electrical contacts and interconnects for FPAS and a method of making the same
Patent number: 9640680Abstract: An optical device includes an optically transparent and electrically conducting conductor including graphene, a network of metal nanowires, or graphene integrated with a network of metal nanowires. The optical device includes a II VI compound semiconductor, a III V compound semiconductor, or InAsSb.Type: GrantFiled: February 18, 2014Date of Patent: May 2, 2017Assignee: HRL Laboratories, LLCInventors: Kyung-Ah Son, Hasan Sharifi, Jeong-Sun Moon, Wah S. Wong, Hwa Chang Seo