Patents by Inventor Jin Hee Ham

Jin Hee Ham 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: 20100221894
    Abstract: Provided is a method for manufacturing a nanowire using stress-induced growth. The method includes: providing a substrate with an intermediate layer formed thereon; forming thin film on the intermediate layer, wherein the thin film made of material having more than 2×10?6/° C. of thermal expansion coefficient difference from the intermediate layer; inducing tensile stress due to the thermal expansion coefficient difference between the thin film and the substrate by performing a heat treatment on the substrate with the thin film formed; and growing single-crystalline nanowire of the material by inducing compressive stress at the thin film through cooling of the substrate.
    Type: Application
    Filed: December 28, 2006
    Publication date: September 2, 2010
    Applicant: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Woo Young Lee, Jin Hee Ham, Woo Young Shim, Jong Wook Roh, Seung Hyun Lee, Kye Jin Jeong
  • Publication number: 20100175734
    Abstract: A thermoelectric nanowire and a method of manufacturing the same, in which an oxide layer and a thermoelectric material layer, both of which have different thermal expansion coefficients, are stacked on a substrate, and a single crystal thermoelectric nanowire is grown from a thermoelectric material using the compressive stress caused by the difference between the thermal expansion coefficients. The method includes preparing a substrate on which an oxide layer is formed, forming a plurality of nanoparticles, each of which includes aluminum (Al), silver (Ag), iron (Fe) or oxides thereof, on the oxide layer, forming a thermoelectric material thin film, which has thermoelectric properties, above the oxide layer so as to include the nanoparticles formed on the oxide layer, heat-treating the substrate having the thermoelectric material thin film to grow the thermoelectric nanowire containing the nanoparticles, and cooling the substrate at room temperature after the heat-treatment.
    Type: Application
    Filed: January 13, 2010
    Publication date: July 15, 2010
    Applicant: Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Woo Young Lee, Jin Hee Ham, Seung Hyun Lee, Jong Wook Roh, Hyun Su Kim, Woo Chul Kim