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Technology for fabrication of a micromagnet on a tip of a MFM/MRFM probe

United States Patent

January 13, 2004
View the Complete Patent at the US Patent & Trademark Office
Los Alamos National Laboratory - Visit the Technology Transfer Division Website
A method for coating the tip of a mechanical resonator for use in magnetic force microscopy and magnetic resonance force microscopy in which the tip is coated with a ferromagnetic material and the cantilever is not, and the product resulting from the method. A cantilever and incorporated tip are coated with a photoresist, except that surface tension keeps photoresist off the tip. The cantilever and tip are then coated with a magnetic material. Next, acetone is used to lift off the magnetic material from the cantilever but not from the tip.
Pelekhov; Denis V. (Los Alamos, NM), Hammel; P. Chris (Santa Fe, NM), Nunes, Jr.; Geoffrey (Swarthmore, PA), Midzor; Melissa M. (Camarillo, CA), Roukes; Michael (Pasadena, CA)
The Regents of the University of California (Los Alamos, NM)
10/ 097,893
March 13, 2002
The present invention generally relates to Magnetic Force Microscopy and to Magnetic Resonance Force Microscopy, and, more specifically to probe tips used in Magnetic Force Microscopy and Magnetic Resonance Force Microscopy. This invention was made with Government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy. The Government has certain rights in the invention.