Patents by Inventor Rolf B. Moeller

Rolf B. Moeller 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).

  • Method for investigating surfaces at nanometer and picosecond resolution and laser-sampled scanning tunneling microscope for performing said method
    Patent number: 4918309
    Abstract: For observing material structures and/or dynamic processes at surfaces, the known scanning tunneling microscope (STM) is combined with a photoexcitation process leading to photon-assisted tunneling. Thereby, the very fine spatial resolution of the STM is combined with the picosecond or even femtosecond time resolution of laser pulses. The tunnel tip of a scanning tunneling microscope is positioned at tunnel distance with respect to the surface of the sample to be investigated, with an appropriate potential applied across the gap between the tunnel tip and the sample. The tunneling current is gated by means of at least one pulsed laser beam directed at the tuneling region and/or at the tunnel tip.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: April 17, 1990
    Assignee: International Business Machines Corporation
    Inventors: Johannes G. Beha, Armin U. Blacha, Rolf Clauberg, Rolf B. Moeller, Wolfgang D. Pohl