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Dynamic modes of nanoparticle motion during nanoprobe-based manipulation

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2 Author(s)
Tafazzoli, A. ; Dept. of Mech. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA ; Sitti, M.

In this paper, dynamic behavior of nanoparticle motion during nanoprobe-based manipulation is investigated. Pushing, pulling or picking manipulation of the particles results in different behavior of rolling, sliding, sticking, or rotation. For a given point of contact of the nanoprobe tip on the particle, nanoprobe load magnitude and direction and critical frictional forces are obtained in all possible operation modes. Friction models in this paper considered both the normal and adhesion forces that are more general comparing to other papers. Pull-off forces in JKR model determine whether critical conditions are gained. Furthermore, developed mode diagrams, caused by the probe loading, indicate the possible dynamic behavior of nanoparticles. This would benefit us on tribological characterization of materials.

Published in:

Nanotechnology, 2004. 4th IEEE Conference on

Date of Conference:

16-19 Aug. 2004