Patents by Inventor Keivan Esfarjani

Keivan Esfarjani 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).

  • Solid state cloaking for electrical charge carrier mobility control
    Patent number: 9076712
    Abstract: An electrical mobility-controlled material includes a solid state host material having a controllable Fermi energy level and electrical charge carriers with a charge carrier mobility. At least one Fermi level energy at which a peak in charge carrier mobility is to occur is prespecified for the host material. A plurality of particles are distributed in the host material, with at least one particle disposed with an effective mass and a radius that minimize scattering of the electrical charge carriers for the at least one prespecified Fermi level energy of peak charge carrier mobility. The minimized scattering of electrical charge carriers produces the peak charge carrier mobility only at the at least one prespecified Fermi level energy, set by the particle effective mass and radius, the charge carrier mobility being less than the peak charge carrier mobility at Fermi level energies other than the at least one prespecified Fermi level energy.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: July 7, 2015
    Assignee: Massachusetts Institute of Technology
    Inventors: Mona Zebarjadi, Bolin Liao, Keivan Esfarjani, Gang Chen
  • METALLIC COMPOSITE PHASE-CHANGE MATERIALS AND METHODS OF USING THE SAME
    Publication number: 20140109895
    Abstract: Metallic composite phase-change materials and methods of using are disclosed. In some embodiments, a thermal energy storage module is provide that included one or more phase change alloys having a variable phase transition temperature between about 400° C. and about 1200° C. and having a latent heat of more than about 200 kJ/kg.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 24, 2014
    Applicants: Massachusetts Institute of Technology, The Trustees of Boston College
    Inventors: Zhifeng Ren, Hengzhi Wang, Hui Wang, Gang Chen, Xiaobo Li, Keivan Esfarjani
  • Solid State Cloaking for Electrical Charge Carrier Mobility Control
    Publication number: 20140070167
    Abstract: An electrical mobility-controlled material includes a solid state host material having a controllable Fermi energy level and electrical charge carriers with a charge carrier mobility. At least one Fermi level energy at which a peak in charge carrier mobility is to occur is prespecified for the host material. A plurality of particles are distributed in the host material, with at least one particle disposed with an effective mass and a radius that minimize scattering of the electrical charge carriers for the at least one prespecified Fermi level energy of peak charge carrier mobility. The minimized scattering of electrical charge carriers produces the peak charge carrier mobility only at the at least one prespecified Fermi level energy, set by the particle effective mass and radius, the charge carrier mobility being less than the peak charge carrier mobility at Fermi level energies other than the at least one prespecified Fermi level energy.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 13, 2014
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Mona Zebarjadi, Bolin Liao, Keivan Esfarjani, Gang Chen