Patents by Inventor Cedric Rocha Leao

Cedric Rocha Leao 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).

  • Three dimensional strained semiconductors
    Patent number: 9490318
    Abstract: In one embodiment, an apparatus includes a three dimensional structure comprising a semiconductor material, and at least one thin film in contact with at least one exterior surface of the three dimensional structure for inducing a strain in the structure, the thin film being characterized as providing at least one of: an induced strain of at least 0.05%, and an induced strain in at least 5% of a volume of the three dimensional structure. In another embodiment, a method includes forming a three dimensional structure comprising a semiconductor material, and depositing at least one thin film on at least one surface of the three dimensional structure for inducing a strain in the structure, the thin film being characterized as providing at least one of: an induced strain of at least 0.05%, and an induced strain in at least 5% of a volume of the structure.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: November 8, 2016
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Lars Voss, Adam Conway, Rebecca J. Nikolic, Cedric Rocha Leao, Qinghui Shao
  • Stabilized thallium bromide radiation detectors and methods of making the same
    Patent number: 9194958
    Abstract: According to one embodiment, a crystal includes thallium bromide (TlBr), one or more positively charged dopants, and one or more negatively charged dopants. According to another embodiment, a system includes a monolithic crystal including thallium bromide (TlBr), one or more positively charged dopants, and one or more negatively charged dopants; and a detector configured to detect a signal response of the crystal.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: November 24, 2015
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Cedric Rocha Leao, Vincenzo Lordi
  • STABILIZED THALLIUM BROMIDE RADIATION DETECTORS AND METHODS OF MAKING THE SAME
    Publication number: 20140097349
    Abstract: According to one embodiment, a crystal includes thallium bromide (TlBr), one or more positively charged dopants, and one or more negatively charged dopants. According to another embodiment, a system includes a monolithic crystal including thallium bromide (TlBr), one or more positively charged dopants, and one or more negatively charged dopants; and a detector configured to detect a signal response of the crystal.
    Type: Application
    Filed: October 2, 2013
    Publication date: April 10, 2014
    Applicant: Lawrence Livermore National Security, LLC
    Inventors: Cedric Rocha Leao, Vincenzo Lordi
  • THREE DIMENSIONAL STRAINED SEMICONDUCTORS
    Publication number: 20130334541
    Abstract: In one embodiment, an apparatus includes a three dimensional structure comprising a semiconductor material, and at least one thin film in contact with at least one exterior surface of the three dimensional structure for inducing a strain in the structure, the thin film being characterized as providing at least one of: an induced strain of at least 0.05%, and an induced strain in at least 5% of a volume of the three dimensional structure. In another embodiment, a method includes forming a three dimensional structure comprising a semiconductor material, and depositing at least one thin film on at least one surface of the three dimensional structure for inducing a strain in the structure, the thin film being characterized as providing at least one of: an induced strain of at least 0.05%, and an induced strain in at least 5% of a volume of the structure.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 19, 2013
    Inventors: Lars Voss, Adam Conway, Rebecca J. Nikolic, Cedric Rocha Leao, Qinghui Shao