Patents by Inventor Hwan Sung Choe

Hwan Sung Choe 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).

  • Publication number: 20190057860
    Abstract: A method of forming ferroelectric hafnium oxide (HfO2) in a substrate processing system includes arranging a substrate within a processing chamber of the substrate processing system, depositing an HfO2 layer on the substrate, performing a plasma treatment of the HfO2 layer, and annealing the HfO2 layer to form ferroelectric hafnium HfO2.
    Type: Application
    Filed: August 2, 2018
    Publication date: February 21, 2019
    Inventors: Hyungsuk Alexander YOON, Zhongwei Zhu, Hwan Sung Choe
  • Patent number: 9541522
    Abstract: The present invention generally relates to nanoscale wires, including to nanoscale wires used as sensors. In some cases, the nanoscale wires may be used to directly determine analytes, even within relatively complicated environments such as blood, unlike many prior art techniques. In some aspects, the nanoscale wire form at least a portion of the gate of a field-effect transistor, and in certain aspects, different periodically-varying voltages or other electrical signals may be applied to the field-effect transistor. For example, in one set of embodiments, sinusoidally-varying voltages of different frequencies may be applied to the nanoscale wire and the source electrode of the field-effect transistor. The electrical conductance or other properties of the nanoscale wire in response to the periodically-varying voltages may then be determined and used to determine binding of the species.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: January 10, 2017
    Assignee: President and Fellows of Harvard College
    Inventors: Charles M. Lieber, Hwan Sung Choe, Xueliang Liu