Patents by Inventor Donald A. Walko

Donald A. Walko 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: 11996210
    Abstract: Typically modulation systems are incapable of performing synchronous modulation for high-energy radiation systems. A method and system for performing high-energy synchronous radiation modulating is described. The method includes providing an oscillatory diffractive element, with the oscillatory diffractive element capable of being oscillated over a range of angles. A radiation source provides radiation to the oscillatory diffractive element. An electrical signal is provided to electrodes that oscillate the oscillatory diffractive element to modulate the radiation. A temperature controller controls the temperature of the oscillatory diffractive element to tune the oscillatory motion of the oscillatory diffractive element.
    Type: Grant
    Filed: May 5, 2022
    Date of Patent: May 28, 2024
    Assignee: UCHICAGO ARGONNE, LLC
    Inventors: Jin Wang, Donald Walko, Pice Chen
  • Patent number: 11866322
    Abstract: A microelectromechanical device for diffracting optical beams comprises a diffractive element suspended over a channel. The diffractive element is configured to receive an optical beam and diffract and/or transmit the optical beam based on an orientation of the diffractive element. At least one torsional actuator is operatively connected to the diffractive element. The at least one torsional actuator is configured to selectively adjust the orientation of the diffractive element. The diffractive element has a diffractive element resonant frequency that is nearly the same as a resonant frequency of the optical beam.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: January 9, 2024
    Inventors: Jin Wang, Donald A. Walko, Pice Chen, Il Woong Jung, Daniel Lopez
  • Publication number: 20230343479
    Abstract: Typically modulation systems are incapable of performing synchronous modulation for high-energy radiation systems. A method and system for performing high-energy synchronous radiation modulating is described. The method includes providing an oscillatory diffractive element, with the oscillatory diffractive element capable of being oscillated over a range of angles. A radiation source provides radiation to the oscillatory diffractive element. An electrical signal is provided to electrodes that oscillate the oscillatory diffractive element to modulate the radiation. A temperature controller controls the temperature of the oscillatory diffractive element to tune the oscillatory motion of the oscillatory diffractive element.
    Type: Application
    Filed: May 5, 2022
    Publication date: October 26, 2023
    Inventors: Jin Wang, Donald Walko, Pice Chen
  • Publication number: 20210284526
    Abstract: A microelectromechanical device for diffracting optical beams comprises a diffractive element suspended over a channel. The diffractive element is configured to receive an optical beam and diffract and/or transmit the optical beam based on an orientation of the diffractive element. At least one torsional actuator is operatively connected to the diffractive element. The at least one torsional actuator is configured to selectively adjust the orientation of the diffractive element. The diffractive element has a diffractive element resonant frequency that is nearly the same as a resonant frequency of the optical beam.
    Type: Application
    Filed: March 9, 2021
    Publication date: September 16, 2021
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Jin Wang, Donald A. Walko, Pice Chen, IL Woong Jung, Daniel Lopez
  • Patent number: 9412480
    Abstract: A method and apparatus are provided for implementing Bragg-diffraction leveraged modulation of X-ray pulses using MicroElectroMechanical systems (MEMS) based diffractive optics. An oscillating crystalline MEMS device generates a controllable time-window for diffraction of the incident X-ray radiation. The Bragg-diffraction leveraged modulation of X-ray pulses includes isolating a particular pulse, spatially separating individual pulses, and spreading a single pulse from an X-ray pulse-train.
    Type: Grant
    Filed: May 9, 2013
    Date of Patent: August 9, 2016
    Assignee: uchicago Argonne, LLC
    Inventors: Daniel Lopez, Gopal Shenoy, Jin Wang, Donald A. Walko, Il-Woong Jung, Deepkishore Mukhopadhyay
  • Patent number: 8976933
    Abstract: A method and apparatus are provided for spatially modulating X-rays or X-ray pulses using microelectromechanical systems (MEMS) based X-ray optics. A torsionally-oscillating MEMS micromirror and a method of leveraging the grazing-angle reflection property are provided to modulate X-ray pulses with a high-degree of controllability.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: March 10, 2015
    Assignee: UChicago Argonne, LLC
    Inventors: Daniel Lopez, Gopal Shenoy, Jin Wang, Donald A. Walko, Il-Woong Jung, Deepkishore Mukhopadhyay
  • Publication number: 20140334607
    Abstract: A method and apparatus are provided for implementing Bragg-diffraction leveraged modulation of X-ray pulses using MicroElectroMechanical systems (MEMS) based diffractive optics. An oscillating crystalline MEMS device generates a controllable time-window for diffraction of the incident X-ray radiation. The Bragg-diffraction leveraged modulation of X-ray pulses includes isolating a particular pulse, spatially separating individual pulses, and spreading a single pulse from an X-ray pulse-train.
    Type: Application
    Filed: May 9, 2013
    Publication date: November 13, 2014
    Applicant: UChicago Argonne, LLC
    Inventors: Daniel Lopez, Gopal Shenoy, Jin Wang, Donald A. Walko, Il-Woong Jung, Deepkishore Mukhopadhyay
  • Publication number: 20130077759
    Abstract: A method and apparatus are provided for spatially modulating X-rays or X-ray pulses using microelectromechanical systems (MEMS) based X-ray optics. A torsionally-oscillating MEMS micromirror and a method of leveraging the grazing-angle reflection property are provided to modulate X-ray pulses with a high-degree of controllability.
    Type: Application
    Filed: September 27, 2011
    Publication date: March 28, 2013
    Applicant: UCHICAGO ARGONNE, LLC
    Inventors: Daniel Lopez, Gopal Shenoy, Jin Wang, Donald A. Walko, Il-Woong Jung, Deepkishore Mukhopadhyay