Patents by Inventor Henri Lezec
Henri Lezec 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: 20250210365Abstract: A method of forming at least one feature on a substrate of a component for an electrical and/or optical device is provided. The method may include applying a masking layer on the substrate. The masking layer may define at least one cavity that is positioned between portions of the masking layer. The method may include applying a first layer of a first material on the masking layer and applying a second layer of a second material on the first layer. The method may include removing a first portion of the first layer and a first portion of the second layer with an etching process.Type: ApplicationFiled: November 7, 2024Publication date: June 26, 2025Inventors: Adam Jay OLLANIK, Rezlind BUSHATI, Amit AGRAWAL, Henri LEZEC, Wenqi ZHU
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Publication number: 20250212548Abstract: Embodiments of the disclosure provide apparatuses, systems, and methods related to photonic devices. A method for fabricating photonic devices may include forming a mask layer on a surface of a mold layer. The mask layer may define one or more openings that expose one or more select portions of a surface of the mold layer. The method may include etching through the one or more openings to form one or more cavities within the mold layer and depositing photonic material within the one or more cavities. Depositing the photonic material may include overfilling the one or more cavities to form an over-filled layer on the mask layer. The method may include removing the over-filled layer and the hard mask layer.Type: ApplicationFiled: December 19, 2024Publication date: June 26, 2025Inventors: Adam Jay Ollanik, Rezlind Bushati, Matthew Blain, Susan Eileen Shore, Amit Agrawal, Henri Lezec, Wenqi Zhu, Chris Langer, Daniel Ouellette
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Patent number: 11885979Abstract: High-performance optical-metasurface-based components configured to at frequencies of UV light and, in particular, in deep UV range and performing multiple optical-wavefront-shaping functions (among which there are high-numerical-aperture lensing, accelerating beam generation, and hologram projection). As a representative material for such components, hafnium oxide demands creation and establishment of a novel process of manufacture that is nevertheless based on general principles of Damascene lithography, to be compatible with existing technology and yet sufficient for producing high-aspect-ratio features that currently-used materials and processes simply do not deliver. The described invention opens a way towards low-form-factor, multifunctional ultraviolet nanophotonic platforms based on flat optical components and enabling diverse applications including lithography, imaging, spectroscopy, and quantum information processing.Type: GrantFiled: December 29, 2020Date of Patent: January 30, 2024Assignees: UNIVERSITY OF MARYLAND, COLLEGE PARK, GOVERNMENT OF THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF COMMERCEInventors: Cheng Zhang, Shawn Divitt, Wenqi Zhu, Amit Kumar Agrawal, Henri Lezec
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Publication number: 20210262077Abstract: High-performance optical-metasurface-based platform configured with the use of Tantalum Pentoxide to operate with extremely low levels of loss at frequencies of UV light and, in particular, in mid- and near-UV ranges and performing multiple optical-wavefront-shaping functions (among which there are high-numerical-aperture lensing, accelerating beam generation, and hologram projection). Process of fabrication of such metasurface producing near-zero levels of optical loss and employing the otherwise standard etching methodologies. Embodiments facilitate the development of low-form-factor, multifunctional ultraviolet nanophotonic platforms based on flat optical components and enabling diverse applications including lithography, imaging, spectroscopy, and quantum information processing.Type: ApplicationFiled: May 7, 2021Publication date: August 26, 2021Inventors: Cheng ZHANG, Wenqi ZHU, Amit Kumar AGRAWAL, David R. CARLSON, Henri LEZEC
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Publication number: 20210208312Abstract: High-performance optical-metasurface-based components configured to at frequencies of UV light and, in particular, in deep UV range and performing multiple optical-wavefront-shaping functions (among which there are high-numerical-aperture lensing, accelerating beam generation, and hologram projection). As a representative material for such components, hafnium oxide demands creation and establishment of a novel process of manufacture that is nevertheless based on general principles of Damascene lithography, to be compatible with existing technology and yet sufficient for producing high-aspect-ratio features that currently-used materials and processes simply do not deliver. The described invention opens a way towards low-form-factor, multifunctional ultraviolet nanophotonic platforms based on flat optical components and enabling diverse applications including lithography, imaging, spectroscopy, and quantum information processing.Type: ApplicationFiled: December 29, 2020Publication date: July 8, 2021Inventors: Cheng ZHANG, Shawn DIVITT, Wenqi ZHU, Amit Kumar AGRAWAL, Henri LEZEC
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Patent number: 9324534Abstract: A cold cathode field emission electron source capable of emission at levels comparable to thermal sources is described. Emission in excess of 6 A/cm2 at 7.5 V/?m is demonstrated in a macroscopic emitter array. The emitter has a monolithic and rigid porous semiconductor nanostructure with uniformly distributed emission sites, and is fabricated through a room temperature process which allows for control of emission properties. These electron sources can be used in a wide range of applications, including microwave electronics and x-ray imaging for medicine and security.Type: GrantFiled: October 20, 2014Date of Patent: April 26, 2016Assignee: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE, THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGYInventors: Fred Sharifi, Myung-Gyu Kang, Henri Lezec
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Publication number: 20150061487Abstract: A cold cathode field emission electron source capable of emission at levels comparable to thermal sources is described. Emission in excess of 6 A/cm2 at 7.5 V/?m is demonstrated in a macroscopic emitter array. The emitter is comprised of a monolithic and rigid porous semiconductor nanostructure with uniformly distributed emission sites, and is fabricated through a room temperature process which allows for control of emission properties. These electron sources can be used in a wide range of applications, including microwave electronics and x-ray imaging for medicine and security.Type: ApplicationFiled: October 20, 2014Publication date: March 5, 2015Inventors: Fred Sharifi, MYUNG-GYU KANG, HENRI LEZEC
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Patent number: 8907553Abstract: A cold cathode field emission electron source capable of emission at levels comparable to thermal sources is described. Emission in excess of 6 A/cm2 at 7.5 V/?m is demonstrated in a macroscopic emitter array. The emitter is comprised of a monolithic and rigid porous semiconductor nanostructure with uniformly distributed emission sites, and is fabricated through a room temperature process which allows for control of emission properties. These electron sources can be used in a wide range of applications, including microwave electronics and x-ray imaging for medicine and security.Type: GrantFiled: August 8, 2012Date of Patent: December 9, 2014Assignee: The United States of America as represented by the Secretary of Commerce, The National Institute of Standards and TechnologyInventors: Fred Sharifi, Myung-Gyu Kang, Henri Lezec
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Publication number: 20130187532Abstract: A cold cathode field emission electron source capable of emission at levels comparable to thermal sources is described. Emission in excess of 6 A/cm2 at 7.5 V/?m is demonstrated in a macroscopic emitter array. The emitter is comprised of a monolithic and rigid porous semiconductor nanostructure with uniformly distributed emission sites, and is fabricated through a room temperature process which allows for control of emission properties. These electron sources can be used in a wide range of applications, including microwave electronics and x-ray imaging for medicine and security.Type: ApplicationFiled: August 8, 2012Publication date: July 25, 2013Applicant: THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGYInventors: Fred Sharifi, Myung-Gyu Kang, Henri Lezec
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Patent number: 7925122Abstract: A slot waveguide utilized as a color-selecting element. The slot waveguide includes a first layer of plasmon supporting material, the first layer being optically opaque and having an input slit extending through the first layer; a second layer of plasmon supporting material facing the first layer and separated from the first layer by a first distance in a first direction, the second layer being optically opaque and having an output slit extending through the second layer and separated from the input slit by a second distance extending along a second direction differing from first direction; a dielectric layer interposed between the first layer and the second layer, the dielectric layer having a real or complex refractive index; and a power source electrically coupled to the first layer and the second layer to apply an electrical signal for modulation of the real or complex refractive index of the dielectric layer.Type: GrantFiled: June 25, 2008Date of Patent: April 12, 2011Assignee: California Institute of TechnologyInventors: Kenneth A. Diest, Jennifer A. Dionne, Harry A. Atwater, Henri Lezec
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Publication number: 20100002979Abstract: A slot waveguide utilized as a color-selecting element. The slot waveguide includes a first layer of plasmon supporting material, the first layer being optically opaque and having an input slit extending through the first layer; a second layer of plasmon supporting material facing the first layer and separated from the first layer by a first distance in a first direction, the second layer being optically opaque and having an output slit extending through the second layer and separated from the input slit by a second distance extending along a second direction differing from first direction; a dielectric layer interposed between the first layer and the second layer, the dielectric layer having a real or complex refractive index; and a power source electrically coupled to the first layer and the second layer to apply an electrical signal for modulation of the real or complex refractive index of the dielectric layer.Type: ApplicationFiled: June 25, 2008Publication date: January 7, 2010Inventors: Kenneth A. Diest, Jennifer A. Dionne, Harry A. Atwater, Henri Lezec
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Publication number: 20080097621Abstract: A graphical programming system allows a user to place geometric shapes onto a scaled image, the shape having associated behavior that operates on the image or on the object of which the image is formed. In a preferred embodiment, the shapes are objects in the Visio program by Microsoft Corporation. The shapes are dragged from a stencil onto an image provided by ion beam or electron microscope image. The shape invokes software or hardware to locate and measure features on the image or to perform operations, such as ion beam milling, on the object that is imaged.Type: ApplicationFiled: October 31, 2007Publication date: April 24, 2008Applicant: FEI COMPANYInventors: DAVID TASKER, HENRI LEZEC, DAVID HEAD
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Publication number: 20050188309Abstract: A graphical programming system allows a user to place geometric shapes onto a scaled image, the shape having associated behavior that operates on the image or on the object of which the image is formed. In a preferred embodiment, the shapes are objects in the Visio program by Microsoft Corporation. The shapes are dragged from a stencil onto an image provided by ion beam or electron microscope image. The shape invokes software or hardware to locate and measure features on the image or to perform operations, such as ion beam milling, on the object that is imaged.Type: ApplicationFiled: April 27, 2005Publication date: August 25, 2005Applicant: FEI CompanyInventors: David Tasker, Henri Lezec, David Head
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Patent number: 6926935Abstract: The present invention provides methods for achieving substantially damage-free material deposition using charged particle (e.g., ion, electron) or light beams for generating secondary electrons to induce deposition in a gas deposition material. Among other things, some of the methods can be used to deposit, with satisfactory throughput, a protective layer over a semiconductor feature without significantly altering the feature thereby preserving it for accurate measurement. In one embodiment, the beam is directed onto an electron-source surface next to the target surface but not within it. The beam is scanned on the electron-source surface causing secondary electrons to be emitted from the electron-source surface and enter the region over the target surface to interact with deposition gas for depositing a desired amount of material onto the target surface.Type: GrantFiled: June 27, 2003Date of Patent: August 9, 2005Assignee: FEI CompanyInventors: Jason Harrison Arjavac, Liang Hong, Henri Lezec, Craig Matthew Henry, John Anthony Notte, IV
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Publication number: 20040261719Abstract: The present invention provides methods for achieving substantially damage-free material deposition using charged particle (e.g., ion, electron) or light beams for generating secondary electrons to induce deposition in a gas deposition material. Among other things, some of the methods can be used to deposit, with satisfactory throughput, a protective layer over a semiconductor feature without significantly altering the feature thereby preserving it for accurate measurement. In one embodiment, the beam is directed onto an electron-source surface next to the target surface but not within it. The beam is scanned on the electron-source surface causing secondary electrons to be emitted from the electron-source surface and enter the region over the target surface to interact with deposition gas for depositing a desired amount of material onto the target surface.Type: ApplicationFiled: June 27, 2003Publication date: December 30, 2004Inventors: Jason Harrison Arjavac, Liang Hong, Henri Lezec, Craig Matthew Henry, John Anthony Notte
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Publication number: 20030067496Abstract: A graphical programming system allows a user to place geometric shapes onto a scaled image, the shape having associated behavior that operates on the image or on the object of which the image is formed. In a preferred embodiment, the shapes are objects in the Visio program by Microsoft Corporation. The shapes are dragged from a stencil onto an image provided by ion beam or electron microscope image. The shape invokes software or hardware to locate and measure features on the image or to perform operations, such as ion beam milling, on the object that is imaged.Type: ApplicationFiled: August 23, 2002Publication date: April 10, 2003Inventors: David J. Tasker, Henri Lezec, David A. Head
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Patent number: 5256579Type: GrantFiled: April 3, 1989Date of Patent: October 26, 1993Assignee: Massachusetts Institute of TechnologyInventors: Henri Lezec, Khalid Ismail