Patents by Inventor Meyya Meyyappan
Meyya Meyyappan 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: 20240158918Abstract: Systems and methods for highly reproducible and focused plasma jet printing and patterning of materials using appropriate ink containing aerosol through nozzles with narrow orifice and tubes with controlled dielectric constant connected to high voltage power supply, in the presence of electric field and plasma, that enables morphological and/or bulk chemical modification and/or surface chemical modification of the material in the aerosol and/or the substrate prior to printing, during printing and post printing.Type: ApplicationFiled: August 24, 2023Publication date: May 16, 2024Inventors: Ramprasad Gandhiraman, Meyya Meyyappan, Jessica E. Koehne
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Patent number: 11958747Abstract: Disclosed are methods and systems of providing carbon nanotubes decorated with polymer coated metal nanoparticles. Then, annealing the metal coated carbon nanotubes to reduce a quantity of hydrophilic components of the polymer coating.Type: GrantFiled: April 20, 2021Date of Patent: April 16, 2024Assignees: SRI INTERNATIONAL, UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NASA, BAY SYSTEMS CONSULTING, INC.Inventors: Gabriel Iftime, Beomseok Kim, Clinton J. Smith, Eric D. Cocker, Junhua Wei, David Eric Schwartz, Meyya Meyyappan, Rahul Pandey, Yong Zhang
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Patent number: 11948709Abstract: An all-printed physically unclonable function based on a single-walled carbon nanotube network. The network may be a mixture of semiconducting and metallic nanotubes randomly tangled with each other through the printing process. The unique distribution of carbon nanotubes in a network can be used for authentication, and this feature can be a secret key for a high level hardware security. The carbon nanotube network does not require any advanced purification process, alignment of nanotubes, high-resolution lithography and patterning. Rather, the intrinsic randomness of carbon nanotubes is leveraged to provide the unclonable aspect.Type: GrantFiled: February 8, 2022Date of Patent: April 2, 2024Assignee: Universities Space Research AssociationInventors: Jin-Woo Han, Meyya Meyyappan, Dong-Il Moon
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Patent number: 11845216Abstract: A device and method for printing 3D articles including electronic and functional elements including 3D printer and a plasma jet printer based on a dielectric barrier atmospheric pressure plasma jet system in which both printing and in-situ treatment and post-deposition treatment can be carried out to tailor the materials characteristics. Plasma jet printer comprising of electrodes in the nozzle/print head for applying electric field and generating atmospheric plasma that could be used for non-gravity based highly directional printing in any direction. Integration of dielectric barrier plasma printer and plasma treatment jets with the 3D printer increases the capability of embedding high performance electronics in a 3D printed structure aiding in additive manufacturing of functional devices. Ability to use a range of materials for print head assembly including micro machined silicon increases the resolution of the plasma jet printer to sub-micron level.Type: GrantFiled: February 8, 2022Date of Patent: December 19, 2023Assignee: UNIVERSITIES SPACE RESEARCH ASSOCIATIONInventors: Ramprasad Gandhiraman, Meyya Meyyappan, Jessica E. Koehne
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Patent number: 11802337Abstract: Methods for generating one or more atmospheric pressure plasma jets that can be used to deposit various types of conductive traces, coatings, and micro/nano-sized particles/structures on two or three dimensional body surfaces. The method includes generating atmospheric pressure plasma, nebulizing a precursor to generate an aerosol; receiving the aerosol from the nebulizer in a chamber; mixing the atmospheric pressure plasma with the aerosol from the chamber at a nozzle; and printing the plasma-exposed aerosol onto the surface of a substrate.Type: GrantFiled: March 29, 2021Date of Patent: October 31, 2023Assignee: United States of America as Administrator of NASAInventors: Ramprasad Gandhiraman, Vivek Jayan, Meyya Meyyappan, Jessica Koehne
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Patent number: 11773491Abstract: Systems and methods for highly reproducible and focused plasma jet printing and patterning of materials using appropriate ink containing aerosol through nozzles with narrow orifice and tubes with controlled dielectric constant connected to high voltage power supply, in the presence of electric field and plasma, that enables morphological and/or bulk chemical modification and/or surface chemical modification of the material in the aerosol and/or the substrate prior to printing, during printing and post printing.Type: GrantFiled: January 21, 2021Date of Patent: October 3, 2023Assignee: UNIVERSITIES SPACE RESEARCH ASSOCIATIONInventors: Ramprasad Gandhiraman, Meyya Meyyappan, Jessica E. Koehne
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Patent number: 11530484Abstract: Systems and methods for highly reproducible and focused plasma jet printing and patterning of materials using appropriate ink containing aerosol through nozzles with narrow orifice and tubes with controlled dielectric constant connected to high voltage power supply, in the presence of electric field and plasma, that enables morphological and/or bulk chemical modification and/or surface chemical modification of the material in the aerosol and/or the substrate prior to printing, during printing and post printing.Type: GrantFiled: August 18, 2021Date of Patent: December 20, 2022Assignee: UNIVERSITIES SPACE RESEARCH ASSOCIATIONInventors: Ramprasad Gandhiraman, Meyya Meyyappan, Jessica E. Koehne
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Publication number: 20220349880Abstract: An electrochemical method for measuring the activity of biomarkers using microelectrode arrays functionalized with peptide consensus sequences and redox reporter moieties. Contact of the arrays with a biological sample containing one or more target biomarkers results in cleavage of the peptides and changes the electric current across the array in a quantifiable manner indicating not just the presence of the target biomarker in the sample, but its activity.Type: ApplicationFiled: April 26, 2022Publication date: November 3, 2022Inventors: Jun Li, Duy H. Hua, Morgan James Anderson, Jessica Erin Koehne, Meyya Meyyappan
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Publication number: 20220310289Abstract: An all-printed physically unclonable function based on a single-walled carbon nanotube network. The network may be a mixture of semiconducting and metallic nanotubes randomly tangled with each other through the printing process. The unique distribution of carbon nanotubes in a network can be used for authentication, and this feature can be a secret key for a high level hardware security. The carbon nanotube network does not require any advanced purification process, alignment of nanotubes, high-resolution lithography and patterning. Rather, the intrinsic randomness of carbon nanotubes is leveraged to provide the unclonable aspect.Type: ApplicationFiled: February 8, 2022Publication date: September 29, 2022Inventors: Jin-Woo Han, Meyya Meyyappan, Dong-II Moon
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Publication number: 20220234293Abstract: A device and method for printing 3D articles including electronic and functional elements including 3D printer and a plasma jet printer based on a dielectric barrier atmospheric pressure plasma jet system in which both printing and in-situ treatment and post-deposition treatment can be carried out to tailor the materials characteristics. Plasma jet printer comprising of electrodes in the nozzle/print head for applying electric field and generating atmospheric plasma that could be used for non-gravity based highly directional printing in any direction. Integration of dielectric barrier plasma printer and plasma treatment jets with the 3D printer increases the capability of embedding high performance electronics in a 3D printed structure aiding in additive manufacturing of functional devices. Ability to use a range of materials for print head assembly including micro machined silicon increases the resolution of the plasma jet printer to sub-micron level.Type: ApplicationFiled: February 8, 2022Publication date: July 28, 2022Inventors: Ramprasad Gandhiraman, Meyya Meyyappan, Jessica E. Koehne
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Patent number: 11244775Abstract: An all-printed physically unclonable function based on a single-walled carbon nanotube network. The network may be a mixture of semiconducting and metallic nanotubes randomly tangled with each other through the printing process. The unique distribution of carbon nanotubes in a network can be used for authentication, and this feature can be a secret key for a high level hardware security. The carbon nanotube network does not require any advanced purification process, alignment of nanotubes, high-resolution lithography and patterning. Rather, the intrinsic randomness of carbon nanotubes is leveraged to provide the unclonable aspect.Type: GrantFiled: December 11, 2019Date of Patent: February 8, 2022Assignee: UNIVERSITIES SPACE RESEARCH ASSOCIATIONInventors: Jin-Woo Han, Meyya Meyyappan, Dong-Il Moon
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Patent number: 11241833Abstract: A device and method for printing 3D articles including electronic and functional elements including 3D printer and a plasma jet printer based on a dielectric barrier atmospheric pressure plasma jet system in which both printing and in-situ treatment and post-deposition treatment can be carried out to tailor the materials characteristics. Plasma jet printer comprising of electrodes in the nozzle/print head for applying electric field and generating atmospheric plasma that could be used for non-gravity based highly directional printing in any direction. Integration of dielectric barrier plasma printer and plasma treatment jets with the 3D printer increases the capability of embedding high performance electronics in a 3D printed structure aiding in additive manufacturing of functional devices. Ability to use a range of materials for print head assembly including micro machined silicon increases the resolution of the plasma jet printer to sub-micron level.Type: GrantFiled: March 9, 2017Date of Patent: February 8, 2022Assignee: UNIVERSITIES SPACE RESEARCH ASSOCIATIONInventors: Ramprasad Gandhiraman, Meyya Meyyappan, Jessica E. Koehne
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Publication number: 20210381108Abstract: Systems and methods for highly reproducible and focused plasma jet printing and patterning of materials using appropriate ink containing aerosol through nozzles with narrow orifice and tubes with controlled dielectric constant connected to high voltage power supply, in the presence of electric field and plasma, that enables morphological and/or bulk chemical modification and/or surface chemical modification of the material in the aerosol and/or the substrate prior to printing, during printing and post printing.Type: ApplicationFiled: August 18, 2021Publication date: December 9, 2021Inventors: Ramprasad Gandhiraman, Meyya Meyyappan, Jessica E. Koehne
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Publication number: 20210325553Abstract: A MEMS nanotube based radiation sensor that is low cost, low power, compact, reliable and is applicable across many fields and a method for fabricating such a sensor are described. Each sensor may be connected to an array of similar but distinct sensors that leverage different materials and nanotube technology to detect radiation.Type: ApplicationFiled: April 17, 2021Publication date: October 21, 2021Inventors: Zishan HAMEED, John GATS, Jin-Woo HAN, Meyya Meyyappan
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Publication number: 20210254217Abstract: Systems and methods for highly reproducible and focused plasma jet printing and patterning of materials using appropriate ink containing aerosol through nozzles with narrow orifice and tubes with controlled dielectric constant connected to high voltage power supply, in the presence of electric field and plasma, that enables morphological and/or bulk chemical modification and/or surface chemical modification of the material in the aerosol and/or the substrate prior to printing, during printing and post printing.Type: ApplicationFiled: January 21, 2021Publication date: August 19, 2021Inventors: Ramprasad Gandhiraman, Meyya Meyyappan, Jessica E. Koehne
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Publication number: 20210253429Abstract: Disclosed are methods and systems of providing carbon nanotubes decorated with polymer coated metal nanoparticles. Then, annealing the metal coated carbon nanotubes to reduce a quantity of hydrophilic components of the polymer coating.Type: ApplicationFiled: April 20, 2021Publication date: August 19, 2021Applicants: Palo Alto Research Center Incorporated, United States of America as Represented by the Administrator of the NASA, Bay Systems Consulting, Inc.Inventors: Gabriel Iftime, Beomseok Kim, Clinton J. Smith, Eric D. Cocker, Junhua Wei, David Eric Schwartz, Meyya Meyyappan, Rahul Pandey, Yong Zhang
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Patent number: 11072531Abstract: Disclosed are methods and systems of providing carbon nanotubes decorated with polymer coated metal nanoparticles. Then, annealing the metal coated carbon nanotubes to reduce a quantity of hydrophilic components of the polymer coating.Type: GrantFiled: December 22, 2017Date of Patent: July 27, 2021Assignees: PALO ALTO RESEARCH CENTER INCORPORATED, UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NASA, BAY SYSTEMS CONSULTING, INC.Inventors: Gabriel Iftime, Beomseok Kim, Clinton Smith, Eric Cocker, Junhua Wei, David Eric Schwartz, Meyya Meyyappan, Rahul Pandey, Yong Zhang
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Patent number: 10995406Abstract: Systems and methods for highly reproducible and focused plasma jet printing and patterning of materials using appropriate ink containing aerosol through nozzles with narrow orifice and tubes with controlled dielectric constant connected to high voltage power supply, in the presence of electric field and plasma, that enables morphological and/or bulk chemical modification and/or surface chemical modification of the material in the aerosol and/or the substrate prior to printing, during printing and post printing.Type: GrantFiled: April 3, 2017Date of Patent: May 4, 2021Assignee: UNIVERSITIES SPACE RESEARCH ASSOCIATIONInventors: Ramprasad Gandhiraman, Meyya Meyyappan, Jessica E. Koehne
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Patent number: 10816411Abstract: A microheater performs a self measurement of its own temperature. The microheater has an electrically resistive element which generates heat when a voltage has been applied across the resistive element. The resistive element has an electrical conductivity that is a function of its temperature. A measurement device is positioned within the microheater body and is configured to measure conductivity of the resistive element. An electronic processor, that may be incorporated into the microheater, controls brief interruption of the heating voltage and application of a lower voltage for measuring conductivity. The lower voltage is insufficient to increase the heat output of the microheater, and is applied for too short of a period to allow excessive cooling of the microheater. A microprocessor receives and processes the data obtained from measuring conductivity.Type: GrantFiled: September 6, 2017Date of Patent: October 27, 2020Assignee: United States of America as Represented by the Administrator of NASAInventors: Meyya Meyyappan, Jin-Woo Han
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Patent number: 10727325Abstract: A horizontal vacuum channel transistor is provided. The horizontal transistor includes a substrate, horizontal emitter and collector electrodes formed in a layer of semiconductor material of the substrate, and a horizontal insulated gate located between the emitter and collector electrodes. The emitter electrode includes multiple horizontally-aligned emitter tips connected to a planar common portion, and the collector electrode includes a planar portion. The gate includes multiple horizontally-aligned gate apertures passing through the gate that each correspond to one of the emitter tips of the emitter electrode. The minimum distance between the emitter and collector electrodes is less than about 180 nm. Also provided are a vertical vacuum channel transistor having vertically-stacked emitter and collector electrodes, and methods for fabricating vacuum channel transistors.Type: GrantFiled: March 22, 2018Date of Patent: July 28, 2020Assignee: United States of America as Represented by the Administrator of NASAInventors: Jin-Woo Han, Meyya Meyyappan