The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2009
Filed:
Feb. 15, 2006
David E. Humphries, El Cerrito, CA (US);
Seok-cheol Hong, Seoul, KR;
Linda A. Cozzarelli, Legal Representative, Berkeley, CA (US);
Martin J. Pollard, El Cerrito, CA (US);
David E. Humphries, El Cerrito, CA (US);
Seok-Cheol Hong, Seoul, KR;
Linda A. Cozzarelli, legal representative, Berkeley, CA (US);
Martin J. Pollard, El Cerrito, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
The present disclosure provides a high performance hybrid magnetic structure made from a combination of permanent magnets and ferromagnetic pole materials which are assembled in a predetermined array. The hybrid magnetic structure provides means for separation and other biotechnology applications involving holding, manipulation, or separation of magnetizable molecular structures and targets. Also disclosed are hybrid magnetic tweezers able to exert approximately 1 nN of force to 4.5 μm magnetic bead. The maximum force was experimentally measured to be ˜900 pN which is in good agreement with theoretical estimations and other measurements. In addition, a new analysis scheme that permits fast real-time position measurement in typical geometry of magnetic tweezers has been developed and described in detail.