Patents by Inventor David A. Lavan

David A. Lavan 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: 20100297608
    Abstract: The systems and methods described herein include a sensor for suitable for sensing chemical and biological substances. The sensor comprises a semiconductor layer formed in or on a substrate and a channel having nano-scale dimensions formed in the semiconductor layer, where the structure creates an electrically conducting pathway between a first contact and a second contact on the semiconductor layer. In certain preferred embodiments, the nano-scale channel has a trapezoidal cross-section with an effective width and exposed lateral faces, where the effective width is selected to have same order of magnitude as a Debye length (LD) of the semiconductor material of which the semiconductor layer is formed.
    Type: Application
    Filed: December 6, 2007
    Publication date: November 25, 2010
    Inventors: Eric D. Stern, Tarek M. Fahmy, Mark A. Reed, Pauline N. Wyremback, Daniel Turner-Evans, Andrew Hamilton, David A. Lavan, James F. Klemic, David A. Routenberg
  • Patent number: 6977223
    Abstract: Method for making three-dimensional structures. A template is provided having at least two conductive regions separated by a non-conductive region. The template is disposed in an electrolyte in an electrodeposition cell and a voltage is established between one of the conductive regions and an electrode in the cell. Material is deposited on the one of the conductive regions connected to the voltage and subsequently bridges to the other conductive region with material deposition continuing on both of the at least two regions. The non conductive region may be a gap and the gap dimension is selected to regulate height differences between the at least two conductive regions.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: December 20, 2005
    Assignee: Massachusetts Institute of Technology
    Inventors: Paul M. George, Robert S. Langer, David A. Lavan
  • Publication number: 20040222102
    Abstract: Method for making three-dimensional structures. A template is provided having at least two conductive regions separated by a non-conductive region. The template is disposed in an electrolyte in an electrodeposition cell and a voltage is established between one of the conductive regions and an electrode in the cell. Material is deposited on the one of the conductive regions connected to the voltage and subsequently bridges to the other conductive region with material deposition continuing on both of the at least two regions. The non conductive region may be a gap and the gap dimension is selected to regulate height differences between the at least two conductive regions.
    Type: Application
    Filed: March 5, 2004
    Publication date: November 11, 2004
    Inventors: Paul M. George, Robert S. Langer, David A. Lavan