Patents by Inventor Marc Christophersen

Marc Christophersen 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).

  • Patent number: 7208069
    Abstract: The device etches semiconductors with a large surface area in a trough-shaped receptacle containing a liquid electrolyte. A sample head is mounted inside the etching trough, and is provided with a device for holding at least one semiconductor wafer. The device is tilted to promote turbulent electrolyte flow in a space between a bottom surface of the semiconductor wafer and top surface of the trough-shaped receptacle.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: April 24, 2007
    Assignee: Kiel University
    Inventors: Marc Christophersen, Jörg Bahr, Jürgen Carstensen, Kay Steen, Georgi Popkirov, Helmut Föll
  • Publication number: 20060276047
    Abstract: A biological sensor which includes: a macroporous semiconductor structure comprising a central layer interposed between upper and lower layers, each of the upper and lower layers including strata of alternating porosity; and one or more probes coupled to the porous semiconductor structure, the one or more probes binding to a target molecule, whereby a detectable change occurs in a refractive index of the biological sensor upon binding of the one or more probes to the target molecule. Methods of making the biological sensor and methods of using the same are disclosed, as is a detection device which includes such a biological sensor.
    Type: Application
    Filed: March 14, 2006
    Publication date: December 7, 2006
    Applicant: University of Rochester
    Inventors: Huimin Ouyang, Philippe Fauchet, Marc Christophersen
  • Publication number: 20060027459
    Abstract: Mesoporous silicon optical filters can be used to filter light in the near infrared, mid infrared and/or far infrared spectral ranges. The special advantages of mesoporous filters in cold temperature applications include improved mechanical stability, absence of delamination problems, manufacturability, and transparency of the mesoporous silicon material throughout a wide spectral range. Techniques are disclosed for enhancing the transparency range and environmental and mechanical stabilities of the mesoporous silicon filters.
    Type: Application
    Filed: May 27, 2005
    Publication date: February 9, 2006
    Applicant: Lake Shore Cryotronics, Inc.
    Inventors: Marc Christophersen, Vladimir Kochergin, Philip Swinehart
  • Publication number: 20050239292
    Abstract: The device etches semiconductors with a large surface area in a trough-shaped receptacle containing a liquid electrolyte. A sample head is mounted inside the etching trough, and is provided with a device for holding at least one semiconductor wafer. The device is tilted to promote turbulent electrolyte flow in a space between a bottom surface of the semiconductor wafer and top surface of the trough-shaped receptacle.
    Type: Application
    Filed: July 24, 2003
    Publication date: October 27, 2005
    Inventors: Marc Christophersen, Jorg Bahr, Jurgen Carstensen, Kay Steen, Georgi Popkirov, Helmut Foll
  • Publication number: 20050199511
    Abstract: Methods and apparatus for providing closed-loop control over an electrochemical etching process during porous semiconductor fabrication enhance the quality of the porous semiconductor materials, especially those contained structural variations (such as porosity or morphology variations) along the thickness of said porous semiconductors. Such enhancement of the control over the electrochemical etching process is highly desired for many applications of porous semiconductor materials.
    Type: Application
    Filed: January 21, 2005
    Publication date: September 15, 2005
    Applicant: LakeShore Cryotronics, Inc.
    Inventors: Vladimir Kochergin, Marc Christophersen