Patents by Inventor Christopher M. Spadaccini
Christopher M. Spadaccini 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: 11880133Abstract: Disclosed here is a method for making an architected three-dimensional aerogel, comprising providing a photoresin comprising a solvent, a photoinitiator, a crosslinkable polymer precursor, and a precursor for graphene, metal oxide or metal chalcogenide; curing the photoresin using projection microstereolithography layer-by-layer to produce a wet gel having a pre-designed three dimensional structure; drying the wet gel to produce a dry gel; and pyrolyzing the dry gel to produce an architected three-dimensional aerogel. Also disclosure is a photoresin for projection microstereolithography, comprising a solvent, a photoinitiator, a crosslinkable polymer precursor, and graphene oxide.Type: GrantFiled: May 31, 2019Date of Patent: January 23, 2024Assignee: Lawrence Livermore National Security, LLCInventors: Marcus A Worsley, Patrick G. Campbell, Eric B. Duoss, James S. Oakdale, Christopher M. Spadaccini, Ryan Hensleigh
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Publication number: 20230405927Abstract: The present disclosure relates to a method involving a substrate having an interface layer, wherein the interface layer (IL) forms only an upper surface portion of the substrate, and a feedstock material (FM) placed on the IL. The method involves using a laser system to generate first and second beam components providing first and second power flux levels, respectively, where the second power flux level which is greater than the first. The FM is heated to a first level short of a melting point using the first beam component, at which point the particles of the FM begin to experience surface tension forces relative to the IL. Further heating the FM to a second level melts the FM and also melts the IL of the substrate, but where a portion of the IL remains unmelted by the second beam component as the particles of the FM and the IL are bonded together.Type: ApplicationFiled: September 5, 2023Publication date: December 21, 2023Inventors: James A. DEMUTH, Andrew J. BAYRAMIAN, Eric B. DUOSS, Joshua D. KUNTZ, Christopher M. SPADACCINI
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Publication number: 20230302727Abstract: The present disclosure relates to a method for additively manufacturing a part. The method may involve using a reservoir to hold a granular material feedstock, and using a nozzle in communication with the reservoir to release the granular material feedstock in a controlled fashion from the reservoir to form at least one layer of a part. The method may further involve using an excitation source for applying a signal to the nozzle which induces a controlled release of the granular material feedstock from the nozzle as needed to pattern the granular material feedstock as necessary to form a layer of the part.Type: ApplicationFiled: May 19, 2023Publication date: September 28, 2023Inventors: Nikola DUDUKOVIC, Roger AINES, Sarah BAKER, Joshua R. DEOTTE, Eric B. DUOSS, Jeremy Taylor FEASTER, Alexandra GOLOBIC, Julie MANCINI, Christopher M. SPADACCINI, Seth Evan WATTS, Michael John TROKSA
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Patent number: 11701827Abstract: A multi-beam volumetric resin curing system and method for whole-volume additive manufacturing of an object includes a bath containing a photosensitive resin, a light source for producing a light beam, and a spatial light modulator which produces a phase- or intensity-modulated light beam by impressing a phase profile or intensity profile of an image onto a light beam received from the light source. The system and method also include projection optics which then produces multiple sub-image beams from the modulated light beam which are projected to intersect each other in the photosensitive resin to cure select volumetric regions of the resin in a whole-volume three-dimensional pattern representing the object.Type: GrantFiled: December 23, 2020Date of Patent: July 18, 2023Assignee: Lawrence Livermore National Security, LLCInventors: Maxim Shusteff, Christopher M. Spadaccini, Nicholas Fang, Robert Matthew Panas, Johannes Henriksson, Brett Kelly, Allison E. Browar
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Patent number: 11697246Abstract: The present disclosure relates to an additive manufacturing system. In one embodiment the system makes use of a reservoir for holding a granular material feedstock. A nozzle is in communication with the reservoir for releasing the granular material feedstock in a controlled fashion from the reservoir to form at least one layer of a part. An excitation source is included for applying a signal which induces a controlled release of the granular material feedstock from the nozzle as needed, to pattern the granular material feedstock as necessary to form a layer of the part.Type: GrantFiled: October 18, 2019Date of Patent: July 11, 2023Assignee: Lawrence Livermore National Security, LLCInventors: Nikola Dudukovic, Roger Aines, Sarah Baker, Joshua R. Deotte, Eric B. Duoss, Jeremy Taylor Feaster, Alexandra Golobic, Julie Mancini, Christopher M. Spadaccini, Seth Evan Watts, Michael John Troksa
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Patent number: 11655550Abstract: An ink formulation and electrode that enhances hydrogen production, oxygen production, carbon dioxide reduction and other electrocatalytic reactions. Embodiments include an ink formulation with polymer binders having different catalytical precursors and a 3D electrode produced by additive manufacturing from the inventor's ink formulation. Various embodiments of the inventor's apparatus, systems, and methods provide inks that that are 3D-printed into patterns that optimize surface area and flow. The catalytic materials are imbedded into the ink matrix which is then printed into a 3D structure that has architecture that optimizes surface area and flow properties.Type: GrantFiled: April 10, 2020Date of Patent: May 23, 2023Assignee: Lawrence Livermore National Security, LLCInventors: Siwei Liang, Sarah E. Baker, Theodore F. Baumann, Eric B. Duoss, Christopher M. Spadaccini, Cheng Zhu
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Patent number: 11639031Abstract: Methods and materials for volumetric additive manufacturing, including computed axial lithography (“CAL”), using photosensitive resins comprising a photocurable resin prepolymer; a photoinitiator; and (optionally) a curing inhibitor. In various embodiments, such photosensitive polymers comprise (a) one or more monomer (or prepolymer) molecules, which form the backbone of the polymer network of the polymeric material and define its architecture; and (b) a photoinitiator that captures illumination energy and initiates polymerization.Type: GrantFiled: May 13, 2020Date of Patent: May 2, 2023Assignees: LAWRENCE LIVERMORE NATIONAL SECURITY, LLC, THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Maxim Shusteff, James Oakdale, Robert Matthew Panas, Christopher M. Spadaccini, Hayden K. Taylor, Brett Kelly, Indrasen Bhattacharya, Hossein Heidari
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Patent number: 11524458Abstract: The present disclosure relates to an apparatus for additively manufacturing a product in a layer-by-layer sequence, wherein the product is formed using powder particles deposited on an interface layer of a substrate. A laser generates first and second beam components. The second beam component has a higher power level and a shorter duration than the first beam component. A mask creates a 2D optical pattern in which only select portions of the second beam components can irradiate the powder particles. The first beam component heats the powder particles close to a melting point, where the particles experience surface tension forces relative to the interface layer. While the particles are heated, the second beam component further heats the particles and also melts the interface layer before the surface tension forces can act on and distort the particles, enabling the particles and the interface layer are able to bond together.Type: GrantFiled: August 12, 2019Date of Patent: December 13, 2022Assignee: Lawrence Livermore National Security, LLCInventors: James A. DeMuth, Andrew J. Bayramian, Eric B. Duoss, Joshua D. Kuntz, Christopher M. Spadaccini
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Patent number: 11339847Abstract: The present disclosure relates to an energy absorbing three dimensional (3D) structure. The structure may have an outer shell formed from a shell material. The outer shell may have a void forming a core volume. A transformative feedstock is contained in the void. The transformative feedstock is encapsulated within the outer shell, within the void, and provides enhanced energy absorbing properties to the 3D structure.Type: GrantFiled: April 16, 2020Date of Patent: May 24, 2022Assignees: Lawrence Livermore National Security, LLC, The Regents of the University Of CaliforniaInventors: Julie A. Mancini, Eric B. Duoss, Alexandra Golobic, Mark Christian Messner, Christopher M. Spadaccini, Kenneth J. Loh
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Publication number: 20220074639Abstract: A semi-passive cooling system for a component exposed to a fluid flow utilizes a hierarchical vasculature and a sacrificial transpirant to cool the component. The component includes a body that defines a transpirant reservoir and the hierarchical vasculature. The transpirant is configured to transition between a solid phase and a vapor phase over an operating temperature range of the component.Type: ApplicationFiled: September 8, 2020Publication date: March 10, 2022Inventors: James T. Cahill, Swetha Chandrasekaran, Wyatt L. Du Frane, Joshua D. Kuntz, Richard L. Landingham, Ryan Lu, Christopher M. Spadaccini, Amy Wat, Seth E. Watts, Marcus A Worsley
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Publication number: 20210317586Abstract: An ink formulation and electrode that enhances hydrogen production, oxygen production, carbon dioxide reduction and other electrocatalytic reactions. Embodiments include an ink formulation with polymer binders having different catalytical precursors and a 3D electrode produced by additive manufacturing from the inventor's ink formulation. Various embodiments of the inventor's apparatus, systems, and methods provide inks that that are 3D-printed into patterns that optimize surface area and flow. The catalytic materials are imbedded into the ink matrix which is then printed into a 3D structure that has architecture that optimizes surface area and flow properties.Type: ApplicationFiled: April 10, 2020Publication date: October 14, 2021Inventors: Siwei Liang, Sarah E. Baker, Theodore F. Baumann, Eric B. Duoss, Christopher M. Spadaccini, Cheng Zhu
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Patent number: 11117091Abstract: Method and apparatus for separating a target substance from a fluid or mixture. Capsules having a coating and stripping solvents encapsulated in the capsules are provided. The coating is permeable to the target substance. The capsules having a coating and stripping solvents encapsulated in the capsules are exposed to the fluid or mixture. The target substance migrates through the coating and is taken up by the stripping solvents. The target substance is separated from the fluid or mixture by driving off the target substance from the capsules.Type: GrantFiled: July 16, 2018Date of Patent: September 14, 2021Assignees: Lawrence Livermore National Security, LLC, The Board of Trustees of the University of IllinoisInventors: Roger D. Aines, Christopher M. Spadaccini, Joshuah K. Stolaroff, William L. Bourcier, Jennifer A. Lewis, Eric B. Duoss, John J. Vericella
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Patent number: 11019717Abstract: According to one embodiment, a method for producing a directed neutron beam includes producing a voltage of negative polarity of at least ?100 keV on a surface of a deuterated or tritiated target in response to a temperature change of a pyroelectric crystal of less than about 40° C., the pyroelectric crystal having the deuterated or tritiated target coupled thereto, pulsing a deuterium ion source to produce a deuterium ion beam, accelerating the deuterium ion beam to the deuterated or tritiated target to produce a neutron beam, and directing the ion beam onto the deuterated or tritiated target to make neutrons using at least one of a voltage of the pyroelectric crystal, and a high gradient insulator (HGI) surrounding the pyroelectric crystal. The directionality of the neutron beam is controlled by changing the accelerating voltage of the system. Other methods are presented as well.Type: GrantFiled: September 28, 2016Date of Patent: May 25, 2021Assignee: Lawrence Livermore National Security, LLC.Inventors: Vincent Tang, Glenn A. Meyer, Steven Falabella, Gary Guethlein, Brian Rusnak, Stephen Sampayan, Christopher M. Spadaccini, Li-Fang Wang, John Harris, Jeff Morse
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Publication number: 20210146619Abstract: A multi-beam volumetric resin curing system and method for whole-volume additive manufacturing of an object includes a bath containing a photosensitive resin, a light source for producing a light beam, and a spatial light modulator which produces a phase- or intensity-modulated light beam by impressing a phase profile or intensity profile of an image onto a light beam received from the light source. The system and method also include projection optics which then produces multiple sub-image beams from the modulated light beam which are projected to intersect each other in the photosensitive resin to cure select volumetric regions of the resin in a whole-volume three-dimensional pattern representing the object.Type: ApplicationFiled: December 23, 2020Publication date: May 20, 2021Inventors: Maxim Shusteff, Christopher M. Spadaccini, Nicholas Fang, Robert Matthew Panas, Johannes Henriksson, Brett Kelly, Allison E. Browar
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Patent number: 10875247Abstract: A multi-beam volumetric resin curing system and method for whole-volume additive manufacturing of an object includes a bath containing a photosensitive resin, a light source for producing a light beam, and a spatial light modulator which produces a phase- or intensity-modulated light beam by impressing a phase profile or intensity profile of an image onto a light beam received from the light source. The system and method also include projection optics which then produces multiple sub-image beams from the modulated light beam which are projected to intersect each other in the photosensitive resin to cure select volumetric regions of the resin in a whole-volume three-dimensional pattern representing the object.Type: GrantFiled: July 17, 2017Date of Patent: December 29, 2020Assignee: Lawrence Livermore National Securitv. LLCInventors: Maxim Shusteff, Christopher M. Spadaccini, Nicholas Fang, Robert Matthew Panas, Johannes Henriksson, Brett Kelly, Allison E. Browar
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Publication number: 20200361152Abstract: Methods and materials for volumetric additive manufacturing, including computed axial lithography (“CAL”), using photosensitive resins comprising a photocurable resin prepolymer; a photoinitiator; and (optionally) a curing inhibitor. In various embodiments, such photosensitive polymers comprise (a) one or more monomer (or prepolymer) molecules, which form the backbone of the polymer network of the polymeric material and define its architecture; and (b) a photoinitiator that captures illumination energy and initiates polymerization.Type: ApplicationFiled: May 13, 2020Publication date: November 19, 2020Inventors: Maxim SHUSTEFF, James OAKDALE, Robert Matthew PANAS, Christopher M. SPADACCINI, Hayden K. TAYLOR, Brett KELLY, Indrasen BHATTACHARYA, Hossein HEIDARI
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Publication number: 20200346283Abstract: The present disclosure relates to a system and apparatus having an optic and a cooling system for cooling the optic. In one example an optically addressed light valve forms the optic. The cooling system includes first and second windows on opposing surfaces of the optically addressed light valve which constrain a cooling fluid to flow over the opposing surfaces. The fluid pressure outside the optically addressed light valve is low enough that it does not compress a liquid crystal gap of the optically addressed light valve. The cooling fluid is also transparent to a high powered light beam which is projected through the first and second windows, and also through the optically addressed light valve, during an additive manufacturing operation.Type: ApplicationFiled: July 16, 2020Publication date: November 5, 2020Inventors: James A. DEMUTH, Eric B. DUOSS, Joshua D. KUNTZ, Paul A. ROSSO, Christopher M. SPADACCINI
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Publication number: 20200298466Abstract: In one embodiment, an ink includes a polymer precursor, a copolymer, a catalyst, and a solvent. In another embodiment, a product includes a three-dimensional printed structure having ligaments, where an average diameter of the ligaments is in a range of about 10 microns to about 500 microns.Type: ApplicationFiled: March 22, 2019Publication date: September 24, 2020Inventors: Siwei Liang, Theodore F. Baumann, Eric B. Duoss, Christopher M. Spadaccini, Marcus A. Worsley, Cheng Zhu
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Patent number: 10747033Abstract: A system and an apparatus having an optic and a cooling system for cooling the optic. In one example an optically addressed light valve forms the optic. The cooling system includes first and second windows on opposing surfaces of the optically addressed light valve which constrain a cooling fluid to flow over the opposing surfaces. The fluid pressure outside the optically addressed light valve is low enough that it does not compress a liquid crystal gap of the optically addressed light valve. The cooling fluid is also transparent to a high powered light beam which is projected through the first and second windows, and also through the optically addressed light valve, during an additive manufacturing operation.Type: GrantFiled: January 29, 2016Date of Patent: August 18, 2020Assignee: Lawrence Livermore National Security, LLCInventors: James A. DeMuth, Eric B. Duoss, Joshua D. Kuntz, Paul A. Rosso, Christopher M. Spadaccini
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Publication number: 20200238681Abstract: The present disclosure relates to an energy absorbing three dimensional (3D) structure. The structure may have an outer shell formed from a shell material. The outer shell may have a void forming a core volume. A transformative feedstock is contained in the void. The transformative feedstock is encapsulated within the outer shell, within the void, and provides enhanced energy absorbing properties to the 3D structure.Type: ApplicationFiled: April 16, 2020Publication date: July 30, 2020Inventors: Julie A. JACKSON, Eric B. DUOSS, Alexandra GOLOBIC, Mark Christian MESSNER, Christopher M. SPADACCINI, Kenneth J. LOH