Nanoscale interaction mechanism between a solid tip and a layered material while in relative motion: the boric acid case |
| |
Authors: | R Prioli CR Ponciano FL Freire Jr |
| |
Institution: | Departamento de Física, Pontifícia Universidade Católica do Rio de Janeiro, Cx. Postal 38071, 22452-970, Rio de Janeiro, RJ, Brazil, BR
|
| |
Abstract: | The interaction occurring between a layered material (boric acid) and an atomic force microscope tip is discussed. It is shown that images containing the periodicity of a boric acid crystal, and the low friction occurring between the tip and the crystal surface, are caused by an effective tip composed of boric acid molecules. The friction at the sliding system decreases with an increase of the scanning velocity, suggesting that the dependence of friction on the velocity can be caused by a change of the energy dissipation regime from the nonlinear dynamics of a sliding system to phonon excitation. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|