Patents by Inventor Andrew P. Homyk

Andrew P. Homyk 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: 8787752
    Abstract: The present disclosure describes an optically powered transducer with a photovoltaic collector. An optical fiber power delivery method and system and a free space power delivery method are also provided. A fabrication process for making an optically powered transducer is further described, together with an implantable transducer system based on optical power delivery.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: July 22, 2014
    Assignee: California Institute of Technology
    Inventors: Axel Scherer, Aditya Rajagopal, Seheon Kim, Andrew P. Homyk
  • Patent number: 8685268
    Abstract: Disclosed herein is a textured substrate comprising a base comprising silicon, the base having a plurality of needle like structures depending away from the base, wherein at least one of the needle like structures has a depth of greater than or equal to about 50 micrometers determined perpendicular to the base, and wherein at least one of the needle like structures has a width of less than or equal to about 50 micrometers determined parallel to the base. An anode and a lithium ion battery comprising the textured substrate, and a method of producing the textured substrate are also disclosed.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: April 1, 2014
    Assignee: The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Karl Y. Yee, Andrew P. Homyk
  • Publication number: 20130327645
    Abstract: Methods and devices for sequencing nucleic acids are disclosed herein. Devices are also provided herein for measuring DNA with nano-pores sized to allow DNA to pass through the nano-pore. The capacitance can be measured for the DNA molecule passing through the nano-pore. The capacitance measurements can be correlated to determine the sequence of base pairs passing through the nano-pore to sequence the DNA.
    Type: Application
    Filed: August 14, 2013
    Publication date: December 12, 2013
    Applicant: California Institute of Technology
    Inventors: Sameer Walavalkar, Axel Scherer, Thomas A. Tombrello, Aditya Rajagopal, Andrew P. Homyk, Erika Garcia
  • Patent number: 8568605
    Abstract: A method for forming nanometer-sized patterns and pores in a membrane is described. The method comprises incorporating a reactive material onto the membrane, the reactive material being a material capable of lowering an amount of energy required for forming a pore and/or pattern by irradiating the membrane material with an electron beam, thus leading to a faster pore and/or pattern formation.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: October 29, 2013
    Assignee: California Institute of Technology
    Inventors: Sameer Walavalkar, Axel Scherer, Andrew P. Homyk
  • Patent number: 8569741
    Abstract: Methods for fabricating passivated silicon nanowires and an electronic arrangement thus obtained are described. Such arrangements may comprise a metal-oxide-semiconductor (MOS) structure such that the arrangements may be utilized for MOS field-effect transistors (MOSFETs) or opto-electronic switches.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: October 29, 2013
    Assignee: California Institute of Technology
    Inventors: Axel Scherer, Sameer Walavalkar, Michael D. Henry, Andrew P. Homyk
  • Patent number: 8535512
    Abstract: Methods and devices for sequencing nucleic acids are disclosed herein. Devices are also provided herein for measuring DNA with nano-pores sized to allow DNA to pass through the nano-pore. The capacitance can be measured for the DNA molecule passing through the nano-pore. The capacitance measurements can be correlated to determine the sequence of base pairs passing through the nano-pore to sequence the DNA.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: September 17, 2013
    Assignee: California Institute of Technology
    Inventors: Sameer Walavalkar, Axel Scherer, Thomas A. Tombrello, Aditya Rajagopal, Andrew P. Homyk, Erika Garcia
  • Publication number: 20120273762
    Abstract: Methods for fabricating passivated silicon nanowires and an electronic arrangement thus obtained are described. Such arrangements may comprise a metal-oxide-semiconductor (MOS) structure such that the arrangements may be utilized for MOS field-effect transistors (MOSFETs) or opto-electronic switches.
    Type: Application
    Filed: October 31, 2011
    Publication date: November 1, 2012
    Inventors: Axel SCHERER, Sameer WALAVALKAR, Michael D. HENRY, Andrew P. HOMYK
  • Publication number: 20120161207
    Abstract: Methods for fabricating silicon nanowire chemical sensing devices, devices thus obtained, and methods for utilizing devices for sensing and measuring chemical concentration of selected species in a fluid are described. Devices may comprise a metal-oxide-semiconductor field-effect transistor (MOSFET) structure.
    Type: Application
    Filed: November 22, 2010
    Publication date: June 28, 2012
    Inventors: Andrew P. HOMYK, Michael D. Henry, Axel Scherer, Sameer Walavalkar
  • Publication number: 20120152902
    Abstract: A method for forming nanometer-sized patterns and pores in a membrane is described. The method comprises incorporating a reactive material onto the membrane, the reactive material being a material capable of lowering an amount of energy required for forming a pore and/or pattern by irradiating the membrane material with an electron beam, thus leading to a faster pore and/or pattern formation.
    Type: Application
    Filed: November 17, 2011
    Publication date: June 21, 2012
    Inventors: Sameer WALAVALKAR, Axel SCHERER, Andrew P. HOMYK
  • Publication number: 20120118739
    Abstract: Methods and devices for sequencing nucleic acids are disclosed herein. Devices are also provided herein for measuring DNA with nano-pores sized to allow DNA to pass through the nano-pore. The capacitance can be measured for the DNA molecule passing through the nano-pore. The capacitance measurements can be correlated to determine the sequence of base pairs passing through the nano-pore to sequence the DNA.
    Type: Application
    Filed: September 29, 2011
    Publication date: May 17, 2012
    Inventors: Sameer Walavalkar, Axel Scherer, Thomas A. Tombrello, Aditya Rajagopal, Andrew P. Homyk, Erika Garcia
  • Patent number: 8148264
    Abstract: Methods for fabrication of high aspect ratio micropillars and nanopillars are described. Use of alumina as an etch mask for the fabrication methods is also described. The resulting micropillars and nanopillars are analyzed and a characterization of the etch mask is provided.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: April 3, 2012
    Assignee: California Institue of Technology
    Inventors: Michael D. Henry, Andrew P. Homyk, Axel Scherer, Sameer Walavalkar
  • Patent number: 8080468
    Abstract: Methods for fabricating passivated silicon nanowires and an electronic arrangement thus obtained are described. Such arrangements may comprise a metal-oxide-semiconductor (MOS) structure such that the arrangements may be utilized for MOS field-effect transistors (MOSFETs) or opto-electronic switches.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: December 20, 2011
    Assignee: California Institute of Technology
    Inventors: Axel Scherer, Sameer Walavalkar, Michael D. Henry, Andrew P. Homyk
  • Publication number: 20110140085
    Abstract: Methods for fabricating self-aligned heterostructures and semiconductor arrangements using silicon nanowires are described.
    Type: Application
    Filed: November 18, 2010
    Publication date: June 16, 2011
    Inventors: Andrew P. Homyk, Michael D. Henry, Axel Scherer, Sameer Walavalkar
  • Publication number: 20110044694
    Abstract: The present disclosure describes an optically powered transducer with a photovoltaic collector. An optical fiber power delivery method and system and a free space power delivery method are also provided. A fabrication process for making an optically powered transducer is further described, together with an implantable transducer system based on optical power delivery.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 24, 2011
    Inventors: Axel Scherer, Aditya Rajagopal, Seheon Kim, Andrew P. Homyk
  • Publication number: 20110031470
    Abstract: Methods for fabricating passivated silicon nanowires and an electronic arrangement thus obtained are described. Such arrangements may comprise a metal-oxide-semiconductor (MOS) structure such that the arrangements may be utilized for MOS field-effect transistors (MOSFETs) or opto-electronic switches.
    Type: Application
    Filed: June 23, 2010
    Publication date: February 10, 2011
    Inventors: Axel Scherer, Sameer Walavalkar, Michael D. Henry, Andrew P. Homyk
  • Publication number: 20100213579
    Abstract: Methods for fabrication of high aspect ratio micropillars and nanopillars are described. Use of alumina as an etch mask for the fabrication methods is also described. The resulting micropillars and nanopillars are analyzed and a characterization of the etch mask is provided.
    Type: Application
    Filed: February 24, 2010
    Publication date: August 26, 2010
    Inventors: Michael D. Henry, Andrew P. Homyk, Axel Scherer, Sameer Walavalkar
  • Publication number: 20100215543
    Abstract: Methods for fabricating of high aspect ratio probes and deforming micropillars and nanopillars are described. Use of polymers in deforming nanopillars and micropillars is also described.
    Type: Application
    Filed: February 24, 2010
    Publication date: August 26, 2010
    Inventors: Michael D. HENRY, Andrew P. Homyk, Axel Scherer, Thomas A. Tombrello, Sameer Walavalkar
  • Publication number: 20040135565
    Abstract: A boost converter for use in a transceiver. The boost converter includes an inductor that is connected to a power supply. A switch is coupled to the inductor and to the return of the power supply when the switch is closed. A diode is coupled to the inductor. A capacitor is coupled between the diode and the return of the power supply with an output voltage being present across the power supply. A microprocessor is coupled to the output voltage. The microprocessor produces a pulse width modulated signal in response to the output voltage. The pulse width modulated signal is coupled through a gate to a pulse train to produce a modulated pulse train. The modulated pulse train is used to control the switch. The modulated pulse train turns the switch on and off in a manner that drives the output voltage to a particular voltage.
    Type: Application
    Filed: October 9, 2003
    Publication date: July 15, 2004
    Inventors: Darin J. Douma, Andrew P. Homyk, Luke M. Ekkizogloy