Patents by Inventor Alex V. Hamza
Alex V. Hamza 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).
-
Patent number: 11807946Abstract: A method of controlling macroscopic strain of a porous structure includes contacting a porous structure with a modifying agent which chemically adsorbs to a surface of the porous structure and modifies an existing surface stress of the porous structure. Additional methods and systems are also presented.Type: GrantFiled: August 30, 2018Date of Patent: November 7, 2023Assignee: Lawrence Livermore National Security, LLCInventors: Juergen Biener, Monika M. Biener, Alex V. Hamza, Marcus Baeumer, Arne Wittstock, Joerg Weissmueller, Dominik Kramer, Raghavan Nadar Viswanath
-
Patent number: 10266949Abstract: A method of controlling macroscopic strain of a porous structure includes contacting a porous structure with a modifying agent which chemically adsorbs to a surface of the porous structure and modifies an existing surface stress of the porous structure. A device in one embodiment includes a porous metal structure, which when contacted with a modifying agent which chemically adsorbs to a surface of the porous metal structure, exhibits a volumetric change due to modification of an existing surface stress of the porous metal structure; and a mechanism for detecting the volumetric change. Additional methods and systems are also presented.Type: GrantFiled: October 10, 2008Date of Patent: April 23, 2019Assignee: Lawrence Livermore National Security, LLCInventors: Juergen Biener, Monika M. Biener, Alex V. Hamza, Marcus Baeumer, Arne Wittstock, Joerg Weissmueller, Dominik Kramer, Raghavan Nadar Viswanath
-
Publication number: 20180371624Abstract: A method of controlling macroscopic strain of a porous structure includes contacting a porous structure with a modifying agent which chemically adsorbs to a surface of the porous structure and modifies an existing surface stress of the porous structure. Additional methods and systems are also presented.Type: ApplicationFiled: August 30, 2018Publication date: December 27, 2018Inventors: Juergen Biener, Monika M. Biener, Alex V. Hamza, Marcus Baeumer, Arne Wittstock, Joerg Weissmueller, Dominik Kramer, Raghavan Nadar Viswanath
-
Patent number: 9793026Abstract: Using SWNT-CA as scaffolds to fabricate stiff, highly conductive polymer (PDMS) composites. The SWNT-CA is immersing in a polymer resin to produce a SWNT-CA infiltrated with a polymer resin. The SWNT-CA infiltrated with a polymer resin is cured to produce the stiff and electrically conductive composite of carbon nanotube aerogel and polymer.Type: GrantFiled: April 16, 2015Date of Patent: October 17, 2017Assignee: Lawrence Livermore National Security, LLCInventors: Marcus A. Worsley, Sergei O. Kucheyev, Theodore F. Baumann, Joshua D. Kuntz, Joe H. Satcher, Jr., Alex V. Hamza
-
Patent number: 9537157Abstract: A nanoconverter or nanosensor is disclosed capable of directly generating electricity through physisorption interactions with molecules that are dipole containing organic species in a molecule interaction zone. High surface-to-volume ratio semiconductor nanowires or nanotubes (such as ZnO, silicon, carbon, etc.) are grown either aligned or randomly-aligned on a substrate. Epoxy or other nonconductive polymers are used to seal portions of the nanowires or nanotubes to create molecule noninteraction zones. By correlating certain molecule species to voltages generated, a nanosensor may quickly identify which species is detected. Nanoconverters in a series parallel arrangement may be constructed in planar, stacked, or rolled arrays to supply power to nano- and micro-devices without use of external batteries. In some cases breath, from human or other life forms, contain sufficient molecules to power a nanoconverter.Type: GrantFiled: April 24, 2015Date of Patent: January 3, 2017Assignee: Lawrence Livermore National Security, LLCInventors: Yinmin Wang, Xianying Wang, Alex V. Hamza
-
Patent number: 9481930Abstract: A novel method for fabricating diamond shells is introduced. The fabrication of such shells is a multi-step process, which involves diamond chemical vapor deposition on predetermined mandrels followed by polishing, microfabrication of holes, and removal of the mandrel by an etch process. The resultant shells of the present invention can be configured with a surface roughness at the nanometer level (e.g., on the order of down to about 10 nm RMS) on a mm length scale, and exhibit excellent hardness/strength, and good transparency in the both the infra-red and visible. Specifically, a novel process is disclosed herein, which allows coating of spherical substrates with optical-quality diamond films or nanocrystalline diamond films.Type: GrantFiled: October 20, 2006Date of Patent: November 1, 2016Assignee: Lawrence Livermore National Security, LLCInventors: Alex V. Hamza, Juergen Biener, Christoph Wild, Eckhard Woerner
-
Publication number: 20160307661Abstract: Using SWNT-CA as scaffolds to fabricate stiff, highly conductive polymer (PDMS) composites. The SWNT-CA is immersing in a polymer resin to produce a SWNT-CA infiltrated with a polymer resin. The SWNT-CA infiltrated with a polymer resin is cured to produce the stiff and electrically conductive composite of carbon nanotube aerogel and polymer.Type: ApplicationFiled: April 16, 2015Publication date: October 20, 2016Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventors: Marcus A. Worsley, Sergei O. Kucheyev, Theodore F. Baumann, Joshua D. Kuntz, Joe H. Satcher, Jr., Alex V. Hamza
-
Publication number: 20150288002Abstract: A nanoconverter or nanosensor is disclosed capable of directly generating electricity through physisorption interactions with molecules that are dipole containing organic species in a molecule interaction zone. High surface-to-volume ratio semiconductor nanowires or nanotubes (such as ZnO, silicon, carbon, etc.) are grown either aligned or randomly-aligned on a substrate. Epoxy or other nonconductive polymers are used to seal portions of the nanowires or nanotubes to create molecule noninteraction zones. By correlating certain molecule species to voltages generated, a nanosensor may quickly identify which species is detected. Nanoconverters in a series parallel arrangement may be constructed in planar, stacked, or rolled arrays to supply power to nano- and micro-devices without use of external batteries. In some cases breath, from human or other life forms, contain sufficient molecules to power a nanoconverter.Type: ApplicationFiled: April 24, 2015Publication date: October 8, 2015Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventors: Yinmin Wang, Xianying Wang, Alex V. Hamza
-
Patent number: 9087625Abstract: Using SWNT-CA as scaffolds to fabricate stiff, highly conductive polymer (PDMS) composites. The SWNT-CA is immersing in a polymer resin to produce a SWNT-CA infiltrated with a polymer resin. The SWNT-CA infiltrated with a polymer resin is cured to produce the stiff and electrically conductive composite of carbon nanotube aerogel and polymer.Type: GrantFiled: October 25, 2011Date of Patent: July 21, 2015Assignee: Lawrence Livermore National Security, LLCInventors: Marcus A. Worsley, Sergei O. Kucheyev, Theodore F. Baumann, Joshua D. Kuntz, Joe H. Satcher, Jr., Alex V. Hamza
-
Patent number: 9052283Abstract: A nanoconverter or nanosensor is disclosed capable of directly generating electricity through physisorption interactions with molecules that are dipole containing organic species in a molecule interaction zone. High surface-to-volume ratio semiconductor nanowires or nanotubes (such as ZnO, silicon, carbon, etc.) are grown either aligned or randomly-aligned on a substrate. Epoxy or other nonconductive polymers are used to seal portions of the nanowires or nanotubes to create molecule noninteraction zones. By correlating certain molecule species to voltages generated, a nanosensor may quickly identify which species is detected. Nanoconverters in a series parallel arrangement may be constructed in planar, stacked, or rolled arrays to supply power to nano- and micro-devices without use of external batteries. In some cases breath, from human or other life forms, contain sufficient molecules to power a nanoconverter.Type: GrantFiled: April 11, 2014Date of Patent: June 9, 2015Assignee: Lawrence Livermore National Security, LLCInventors: Yinmin Wang, Xianying Wang, Alex V. Hamza
-
Publication number: 20140287336Abstract: A nanoconverter or nanosensor is disclosed capable of directly generating electricity through physisorption interactions with molecules that are dipole containing organic species in a molecule interaction zone. High surface-to-volume ratio semiconductor nanowires or nanotubes (such as ZnO, silicon, carbon, etc.) are grown either aligned or randomly-aligned on a substrate. Epoxy or other nonconductive polymers are used to seal portions of the nanowires or nanotubes to create molecule noninteraction zones. By correlating certain molecule species to voltages generated, a nanosensor may quickly identify which species is detected. Nanoconverters in a series parallel arrangement may be constructed in planar, stacked, or rolled arrays to supply power to nano- and micro-devices without use of external batteries. In some cases breath, from human or other life forms, contain sufficient molecules to power a nanoconverter.Type: ApplicationFiled: April 11, 2014Publication date: September 25, 2014Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventors: Yinmin Wang, Xianying Wang, Alex V. Hamza
-
Patent number: 8785346Abstract: A method for forming a gold-containing catalyst with porous structure according to one embodiment of the present invention includes producing a starting alloy by melting together of gold and at least one less noble metal that is selected from the group consisting of silver, copper, rhodium, palladium, and platinum; and a dealloying step comprising at least partial removal of the less noble metal by dissolving the at least one less noble metal out of the starting alloy. Additional methods and products thereof are also presented.Type: GrantFiled: June 8, 2009Date of Patent: July 22, 2014Assignees: Lawrence Livermore National Security, LLC, Universitaet BremenInventors: Juergen Biener, Alex V. Hamza, Marcus Baeumer, Christian Schulz, Birte Jürgens, Monika M. Biener
-
Patent number: 8778563Abstract: A nanoconverter or nanosensor is disclosed capable of directly generating electricity through physisorption interactions with molecules that are dipole containing organic species in a molecule interaction zone. High surface-to-volume ratio semiconductor nanowires or nanotubes (such as ZnO, silicon, carbon, etc.) are grown either aligned or randomly-aligned on a substrate. Epoxy or other nonconductive polymers are used to seal portions of the nanowires or nanotubes to create molecule noninteraction zones. By correlating certain molecule species to voltages generated, a nanosensor may quickly identify which species is detected. Nanoconverters in a series parallel arrangement may be constructed in planar, stacked, or rolled arrays to supply power to nano- and micro-devices without use of external batteries. In some cases breath, from human or other life forms, contain sufficient molecules to power a nanoconverter.Type: GrantFiled: April 20, 2012Date of Patent: July 15, 2014Assignee: Lawrence Livermore National Security, LLCInventors: Yinmin Wang, Xianying Wang, Alex V. Hamza
-
Publication number: 20120237853Abstract: A nanoconverter or nanosensor is disclosed capable of directly generating electricity through physisorption interactions with molecules that are dipole containing organic species in a molecule interaction zone. High surface-to-volume ratio semiconductor nanowires or nanotubes (such as ZnO, silicon, carbon, etc.) are grown either aligned or randomly-aligned on a substrate. Epoxy or other nonconductive polymers are used to seal portions of the nanowires or nanotubes to create molecule noninteraction zones. By correlating certain molecule species to voltages generated, a nanosensor may quickly identify which species is detected. Nanoconverters in a series parallel arrangement may be constructed in planar, stacked, or rolled arrays to supply power to nano- and micro-devices without use of external batteries. In some cases breath, from human or other life forms, contain sufficient molecules to power a nanoconverter.Type: ApplicationFiled: April 20, 2012Publication date: September 20, 2012Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventors: Yinmin Wang, Xianying Wang, Alex V. Hamza
-
Publication number: 20120037854Abstract: Using SWNT-CA as scaffolds to fabricate stiff, highly conductive polymer (PDMS) composites. The SWNT-CA is immersing in a polymer resin to produce a SWNT-CA infiltrated with a polymer resin. The SWNT-CA infiltrated with a polymer resin is cured to produce the stiff and electrically conductive composite of carbon nanotube aerogel and polymer.Type: ApplicationFiled: October 25, 2011Publication date: February 16, 2012Inventors: Marcus A. Worsley, Sergei O. Kucheyev, Theodore F. Baumann, Joshua D. Kuntz, Joe H. Satcher, JR., Alex V. Hamza
-
Publication number: 20110024698Abstract: Using SWNT-CA as scaffolds to fabricate stiff, highly conductive polymer (PDMS) composites. The SWNT-CA is immersing in a polymer resin to produce a SWNT-CA infiltrated with a polymer resin. The SWNT-CA infiltrated with a polymer resin is cured to produce the stiff and electrically conductive composite of carbon nanotube aerogel and polymer.Type: ApplicationFiled: April 15, 2010Publication date: February 3, 2011Inventors: Marcus A. Worsley, Sergei O. Kucheyev, Theodore F. Baumann, Joshua D. Kuntz, Joe H. Satcher, JR., Alex V. Hamza
-
Publication number: 20100187484Abstract: A method of making a mechanically robust, electrically conductive ultralow-density carbon nanotube-based aerogel, including the steps of dispersing nanotubes in an aqueous media or other media to form a suspension, adding reactants and catalyst to the suspension to create a reaction mixture, curing the reaction mixture to form a wet gel, drying the wet gel to produce a dry gel, and pyrolyzing the dry gel to produce the mechanically robust, electrically conductive ultralow-density carbon nanotube-based aerogel. The aerogel is mechanically robust, electrically conductive, and ultralow-density, and is made of a porous carbon material having 5 to 95% by weight carbon nanotubes and 5 to 95% carbon binder.Type: ApplicationFiled: January 5, 2010Publication date: July 29, 2010Inventors: Marcus A. Worsley, Sergei O. Kucheyev, Theodore F. Baumann, Joe H. Satcher, JR., Alex V. Hamza
-
Publication number: 20090291848Abstract: The invention relates to a gold-containing catalyst with porous structure that is obtainable through a process that comprises the following steps: melting together of gold and at least one less noble metal that is selected from the group consisting of silver, copper, rhodium, palladium, and platinum, and at least partial removal by dissolving the at least one less noble metal out of the starting alloy thus obtained. The catalyst has high activity and great long-term stability, despite the fact that it does not contain a support material or a compound that serves as a support material. The catalyst can be used to accelerate and/or to influence the product selectivity of oxidation and reduction reactions. The catalyst is suitable, for example, for the oxidization of carbon monoxide to carbon dioxide, which makes it usable, among other things, in a fuel cell, in particular a polymer electrolyte membrane fuel cell (PEM), for protection of the anode catalyst against blocking by carbon monoxide.Type: ApplicationFiled: June 8, 2009Publication date: November 26, 2009Inventors: Juergen Biener, Alex V. Hamza, Marcus Baeumer, Christian Schulz, Birte Jürgens, Monika M. Biener
-
Publication number: 20090101241Abstract: A method of controlling macroscopic strain of a porous structure includes contacting a porous structure with a modifying agent which chemically adsorbs to a surface of the porous structure and modifies an existing surface stress of the porous structure. A device in one embodiment includes a porous metal structure, which when contacted with a modifying agent which chemically adsorbs to a surface of the porous metal structure, exhibits a volumetric change due to modification of an existing surface stress of the porous metal structure; and a mechanism for detecting the volumetric change. Additional methods and systems are also presented.Type: ApplicationFiled: October 10, 2008Publication date: April 23, 2009Inventors: Juergen Biener, Monika M. Biener, Alex V. Hamza, Marcus Baeumer, Arne Wittstock, Joerg Weissmueller, Dominik Kramer, Raghavan Nadar Viswanath
-
Patent number: 6291820Abstract: A secondary ion mass spectrometer using slow, highly charged ions produced in an electron beam ion trap permits ultra-sensitive surface analysis and high spatial resolution simultaneously. The spectrometer comprises an ion source producing a primary ion beam of highly charged ions that are directed at a target surface, a mass analyzer, and a microchannel plate detector of secondary ions that are sputtered from the target surface after interaction with the primary beam. The unusually high secondary ion yield permits the use of coincidence counting, in which the secondary ion stops are detected in coincidence with a particular secondary ion. The association of specific molecular species can be correlated. The unique multiple secondary nature of the highly charged ion interaction enables this new analytical technique.Type: GrantFiled: January 8, 1999Date of Patent: September 18, 2001Assignee: The Regents of the University of CaliforniaInventors: Alex V. Hamza, Thomas Schenkel, Alan V. Barnes, Dieter H. Schneider