Patents by Inventor Derrick Chi

Derrick Chi 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).

  • Localized deposition of polymer film on nanocantilever chemical vapor sensors by surface-initiated atom transfer radical polymerization
    Patent number: 9423387
    Abstract: Cantilever chemical vapor sensors that can be tailored to respond preferentially in frequency by controlling the location of deposition of an adsorbing layer. Cantilever chemical vapor sensor having a base, one or more legs and a tip are fabricated using a gold layer to promote deposition of a sorbing layer of a polymeric material in a desired location, and using a chromium layer to inhibit deposition of the sorbing layer in other locations. Sorbing layers having different glass temperatures Tg and their effects are described. The methods of making such cantilever chemical vapor sensors are described.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: August 23, 2016
    Assignee: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Heather McCaig, Edward B. Myers, Michael L. Roukes, Nathan S. Lewis, Derrick Chi
  • LOCALIZED DEPOSITION OF POLYMER FILM ON NANOCANTILEVER CHEMICAL VAPOR SENSORS BY SURFACE-INITIATED ATOM TRANSFER RADICAL POLYMERIZATION
    Publication number: 20130098141
    Abstract: Cantilever chemical vapor sensors that can be tailored to respond preferentially in frequency by controlling the location of deposition of an adsorbing layer. Cantilever chemical vapor sensor having a base, one or more legs and a tip are fabricated using a gold layer to promote deposition of a sorbing layer of a polymeric material in a desired location, and using a chromium layer to inhibit deposition of the sorbing layer in other locations. Sorbing layers having different glass temperatures Tg and their effects are described. The methods of making such cantilever chemical vapor sensors are described.
    Type: Application
    Filed: March 14, 2012
    Publication date: April 25, 2013
    Applicant: California Institute of Technology
    Inventors: Heather McCaig, Edward B. Myers, Michael L. Roukes, Nathan S. Lewis, Derrick Chi