Patents by Inventor Paul C. Hansen

Paul C. Hansen 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).

  • Tip-enhanced resonant apertures
    Patent number: 8196217
    Abstract: Transmission efficiency and/or spatial resolution provided by resonant apertures can be enhanced by disposing a tip on part of the screen that extends laterally into the aperture. For example, a tip disposed on the ridge of a C-shaped aperture can dramatically improve performance. A spatial resolution of ?/50 has been experimentally demonstrated with this approach. The combination of high spatial resolution and high transmission efficiency provided by this approach enables many applications, such as near field optical probes for near field scanning optical microscopy (NSOM). Another application is high resolution electron sources, where an photoelectron emitter can be disposed at or near a tip+aperture structure such that the high resolution optical near-field provides a correspondingly high resolution electron source.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: June 5, 2012
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Yao-Te Cheng, Yin Yuen, Paul C. Hansen, Yuzuru Takashima, Lambertus Hesselink
  • Tip-enhanced resonant apertures
    Publication number: 20110055984
    Abstract: Transmission efficiency and/or spatial resolution provided by resonant apertures can be enhanced by disposing a tip on part of the screen that extends laterally into the aperture. For example, a tip disposed on the ridge of a C-shaped aperture can dramatically improve performance. A spatial resolution of ?/50 has been experimentally demonstrated with this approach. The combination of high spatial resolution and high transmission efficiency provided by this approach enables many applications, such as near field optical probes for near field scanning optical microscopy (NSOM). Another application is high resolution electron sources, where an photoelectron emitter can be disposed at or near a tip+aperture structure such that the high resolution optical near-field provides a correspondingly high resolution electron source.
    Type: Application
    Filed: August 16, 2010
    Publication date: March 3, 2011
    Inventors: Yao-Te Cheng, Yin Yuen, Paul C. Hansen, Yuzuru Takashima, Lambertus Hesselink