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).

  • Patent number: 11881793
    Abstract: 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: Grant
    Filed: November 27, 2019
    Date of Patent: January 23, 2024
    Assignee: University of Surrey
    Inventors: Ishara Dharmasena, Sembukuttiarachilage Ravi Pradip Silva
  • Patent number: 11340362
    Abstract: 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: Grant
    Filed: October 26, 2017
    Date of Patent: May 24, 2022
    Inventors: Hashini Manodya Thirimanne, Koruwakankanange Don Gershon Imalka Jayawardena, Sembukuttiarachilage Ravi Pradip Silva, Christopher Alan Mills
  • Publication number: 20220056592
    Abstract: 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: Application
    Filed: December 18, 2019
    Publication date: February 24, 2022
    Applicants: UNIVERSITY OF SURREY, AIRBUS DEFENCE AND SPACE GMBH
    Inventors: José Virgilio Anguita RODRIGUEZ, Sembukuttiarachilage Ravi Pradip SILVA, Christopher Toby Gibb SMITH, Michal DELKOWSKI
  • Publication number: 20220052628
    Abstract: 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: Application
    Filed: November 27, 2019
    Publication date: February 17, 2022
    Applicant: University of Surrey
    Inventors: Ishara DHARMASENA, Sembukuttiarachilage Ravi Pradip SILVA
  • Publication number: 20210316331
    Abstract: 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: Application
    Filed: August 30, 2019
    Publication date: October 14, 2021
    Applicants: UNIVERSITY OF SURREY, AIRBUS DEFENCE AND SPACE GMBH
    Inventors: José Virgilio Anguita RODRIGUEZ, Sembukuttiarachilage Ravi Pradip SILVA
  • Publication number: 20190257959
    Abstract: 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: Application
    Filed: October 26, 2017
    Publication date: August 22, 2019
    Applicant: Silverray Limited
    Inventors: Hashini Manodya Thirimanne, Koruwakankanange Don Gershon Imalka Jayawardena, Sembukuttiarachilage Ravi Pradip Silva, Christopher Alan Mills
  • Publication number: 20120043640
    Abstract: 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: Application
    Filed: April 16, 2010
    Publication date: February 23, 2012
    Inventors: Sembukuttiarachilage Ravi Pradip Silva, José Virgilio Anguita Rodriguez Estefania
  • Patent number: 7812327
    Abstract: 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: Grant
    Filed: September 30, 2005
    Date of Patent: October 12, 2010
    Assignee: BAE Systems PLC
    Inventors: Sajad Haq, Michael Christopher Hebbron, José Virgilio Anguita Rodriguez, Sembukuttiarachilage Ravi Pradip Silva