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Title: Femtomolar Optical Tweezers
Description: Basic scheme of an optical tweezer-based sensor of biological particles. A microsphere covered with a specific antigen (such as a virus or other infectious agent) is trapped and pulled away from a surface containing the corresponding antibodies. The minimum amount of force applied to the tweezers to break the bonds can provide information on the concentration of antibodies on the surface.

*Physics
Subjects (names):
Topics/Categories: Physics--Optics
Type: Graphic/illustration
Source: National Institute of Standards and Technology
Credit Line as it should
appear in print:
Credit: NIST
Date Created: 2008
Date Entered: 11/12/2008

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