Patents by Inventor Sembukuttiarachilage Ravi Pradip Silva
Sembukuttiarachilage Ravi Pradip Silva 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: 11881793Abstract: A triboelectric generator comprises a first body moveable relative to a second body. Power generation modules are disposed on the first body and one or more actuating elements are disposed on the second body. Each power generation module is electrically connected to a common output and comprises material capable of generating electrical power through the triboelectric effect when contacting another surface. The power generation modules and one or more actuating elements are arranged on the bodies such that relative movement of the bodies causes the one or more actuating elements to come into contact with the power generation modules, wherein the contact causes the material of that power generation module to be brought into contact with said other surface to generate electrical power. The power generation modules may supply electrical power to the common output at different times, providing a more continuous supply of electrical power from the common output.Type: GrantFiled: November 27, 2019Date of Patent: January 23, 2024Assignee: University of SurreyInventors: Ishara Dharmasena, Sembukuttiarachilage Ravi Pradip Silva
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Patent number: 11340362Abstract: A device includes a network having a first material (e.g. electron donor, hole transporting material, p-type semiconductor) for transporting positive electrical charges and a second material (e.g. electron acceptor, electronic transporting material, n-type semiconductor) for transporting negative electrical charges. The first and second materials are dispersed within the network to form a plurality of electrical junctions. A plurality of nanoparticles are dispersed within the network, wherein the nanoparticles have at least one dimension larger than twice an exciton Bohr radius for the nanoparticles and at least one dimension less than 100 nm. In use, the nanoparticles convert incoming radiation into free positive and negative electrical charges for transportation by the first and second materials respectively.Type: GrantFiled: October 26, 2017Date of Patent: May 24, 2022Inventors: Hashini Manodya Thirimanne, Koruwakankanange Don Gershon Imalka Jayawardena, Sembukuttiarachilage Ravi Pradip Silva, Christopher Alan Mills
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Publication number: 20220056592Abstract: A method for depositing a multilayer coating onto a substrate includes supporting the substrate on a platen comprising an electrically conductive material disposed in a deposition chamber, connected to an electrical power supply and electrically insulated from an electrode. The pressure in the deposition chamber is less than 10 Torr when a first feedstock is fed to the substrate. The electrical power supply is activated to create a plasma surrounding the substrate which ionises and/or activates particles within the first feedstock, allowing the ionised and/or activated particles from the first feedstock to deposit on the substrate and polymerise, thereby forming a first a coating on the substrate. Particles of a second feedstock, different from the first feedstock, are fed to the substrate and are ionized and/or activated by the plasma and allowed to deposit on the substrate and polymerise to form a second coating on the substrate.Type: ApplicationFiled: December 18, 2019Publication date: February 24, 2022Applicants: UNIVERSITY OF SURREY, AIRBUS DEFENCE AND SPACE GMBHInventors: José Virgilio Anguita RODRIGUEZ, Sembukuttiarachilage Ravi Pradip SILVA, Christopher Toby Gibb SMITH, Michal DELKOWSKI
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Publication number: 20220052628Abstract: A triboelectric generator comprises a first body moveable relative to a second body. Power generation modules are disposed on the first body and one or more actuating elements are disposed on the second body. Each power generation module is electrically connected to a common output and comprises material capable of generating electrical power through the triboelectric effect when contacting another surface. The power generation modules and one or more actuating elements are arranged on the bodies such that relative movement of the bodies causes the one or more actuating elements to come into contact with the power generation modules, wherein the contact causes the material of that power generation module to be brought into contact with said other surface to generate electrical power. The power generation modules may supply electrical power to the common output at different times, providing a more continuous supply of electrical power from the common output.Type: ApplicationFiled: November 27, 2019Publication date: February 17, 2022Applicant: University of SurreyInventors: Ishara DHARMASENA, Sembukuttiarachilage Ravi Pradip SILVA
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Publication number: 20210316331Abstract: The disclosure provides an apparatus for depositing poly(p-xylylene) onto a component (4). The apparatus comprises (i) a platen, (ii) an electrode, and (iii) a first feed means. The platen comprises an electrically conductive material, is electrically connected to an electrical power supply and is configured to support a component. The electrode is electrically insulated from the platen. The first feed means is configured to feed a poly(p-xylylene) monomer to the platen. Furthermore, the component either comprises an electrically conductive material or consists of an electrically insulating material. If the component consists of an electrically insulating material the electrical power supply is an alternating current power supply and generated an alternating electrical field which couples to the component, and is thereby able to penetrate through the component to create the plasma.Type: ApplicationFiled: August 30, 2019Publication date: October 14, 2021Applicants: UNIVERSITY OF SURREY, AIRBUS DEFENCE AND SPACE GMBHInventors: José Virgilio Anguita RODRIGUEZ, Sembukuttiarachilage Ravi Pradip SILVA
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Publication number: 20190257959Abstract: A device includes a network having a first material (e.g. electron donor, hole transporting material, p-type semiconductor) for transporting positive electrical charges and a second material (e.g. electron acceptor, electronic transporting material, n-type semiconductor) for transporting negative electrical charges. The first and second materials are dispersed within the network to form a plurality of electrical junctions. A plurality of nanoparticles are dispersed within the network, wherein the nanoparticles have at least one dimension larger than twice an exciton Bohr radius for the nanoparticles and at least one dimension less than 100 nm. In use, the nanoparticles convert incoming radiation into free positive and negative electrical charges for transportation by the first and second materials respectively.Type: ApplicationFiled: October 26, 2017Publication date: August 22, 2019Applicant: Silverray LimitedInventors: Hashini Manodya Thirimanne, Koruwakankanange Don Gershon Imalka Jayawardena, Sembukuttiarachilage Ravi Pradip Silva, Christopher Alan Mills
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Publication number: 20120043640Abstract: There is disclosed a method for producing a highly cross-linked polypropylene material by plasma polymerisation of a carbon containing gas, not specifically propylene, exhibiting low relative permittivity, high thermal stability and enhanced mechanical properties, said method and material being suitable for application not limited to interlayer dielectric deposition in microchip fabrication.Type: ApplicationFiled: April 16, 2010Publication date: February 23, 2012Inventors: Sembukuttiarachilage Ravi Pradip Silva, José Virgilio Anguita Rodriguez Estefania
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Patent number: 7812327Abstract: This invention relates to a radiator 10 and to a method of making a radiator. In particular, this invention relates to a radiator 10 having thin-film 5 coatings that serve to increase the thermal emissivity of the entire structure. A radiator 10 is provided comprising a substrate 12, an amorphous carbon layer 16 and the metallic carbide forming layer 14 interposed between the substrate 12 and amorphous carbon layer 16. In addition, a method of making a radiator is provided comprising the steps of forming the metallic carbide-forming layer on a substrate and forming an amorphous carbon layer on the metallic carbide-forming layer.Type: GrantFiled: September 30, 2005Date of Patent: October 12, 2010Assignee: BAE Systems PLCInventors: Sajad Haq, Michael Christopher Hebbron, José Virgilio Anguita Rodriguez, Sembukuttiarachilage Ravi Pradip Silva