Patents by Inventor Zhijuan Sun

Zhijuan Sun 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).

  • Method for preparing a porous anti-reflection thin film composed of hollow polymeric nanoparticles
    Patent number: 9180486
    Abstract: A method for preparing a porous anti-reflective thin film composed of hollow polymer nano-particles is provided in the following steps: Firstly, an aqueous dispersion having mass percent of 3-7% is prepared using polymer nano-capsules. A thin film comprising polymer nano-capsules is formed by spin coating on one side or both sides of the substrate using a spin coater. The thin film comprising polymer nano-capsules is dried in vacuum at high temperature. After the core materials of the polymer nano-capsules evaporate completely, the polymer nano-capsules turn into hollow polymer nano-particles, and a porous anti-reflective thin film composed of hollow polymer nano-particles is prepared. The thickness and refractive index of the thin film are adjusted conveniently and effectively by changing the concentration of polymer nano-capsules aqueous dispersion and the hollow volume rate of the polymer nano-particles. The thin film has the advantages of high mechanical intensity and abrasion resistance.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: November 10, 2015
    Assignee: ZHEJIANG UNIVERSITY
    Inventors: Zhijuan Sun, Xiang Gao, Yingwu Luo
  • METHOD FOR PREPARING A POROUS ANTI-REFLECTION THIN FILM COMPOSED OF HOLLOW POLYMERIC NANOPARTICLES
    Publication number: 20130209678
    Abstract: A method for preparing a porous anti-reflective thin film composed of hollow polymer nano-particles is provided in the following steps: Firstly, an aqueous dispersion having mass percent of 3-7% is prepared using polymer nano-capsules. A thin film comprising polymer nano-capsules is formed by spin coating on one side or both sides of the substrate using a spin coater. The thin film comprising polymer nano-capsules is dried in vacuum at high temperature. After the core materials of the polymer nano-capsules evaporate completely, the polymer nano-capsules turn into hollow polymer nano-particles, and a porous anti-reflective thin film composed of hollow polymer nano-particles is prepared. The thickness and refractive index of the thin film are adjusted conveniently and effectively by changing the concentration of polymer nano-capsules aqueous dispersion and the hollow volume rate of the polymer nano-particles. The thin film has the advantages of high mechanical intensity and abrasion resistance.
    Type: Application
    Filed: May 31, 2011
    Publication date: August 15, 2013
    Applicant: ZHEJIANG UNIVERSITY
    Inventors: Zhijuan Sun, Xiang Gao, Yingwu Luo