TITLE

Coaxial atomic force microscope tweezers

AUTHOR(S)
Brown, K. A.; Aguilar, J. A.; Westervelt, R. M.
PUB. DATE
March 2010
SOURCE
Applied Physics Letters;3/22/2010, Vol. 96 Issue 12, p123109
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We demonstrate coaxial atomic force microscope (AFM) tweezers that can trap and place small objects using dielectrophoresis (DEP). An attractive force is generated at the tip of a coaxial AFM probe by applying a radio frequency voltage between the center conductor and a grounded shield; the origin of the force is found to be DEP by measuring the pull-off force versus applied voltage. We show that the coaxial AFM tweezers can perform three-dimensional assembly by picking up a specified silica microsphere, imaging with the microsphere at the end of the tip, and placing it at a target destination.
ACCESSION #
48837228

 

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