On the Forces between Micro and Nano Objects and the Gripper
We study the van der Waals force Fvdw between the gripper jaw and an object - cubical, spherical and conical in shape, situated at a distance L of closest approach from it. We consider the generic and most general case when the materials of the working jaw of the gripper and the particle are made of different materials strongly preferring the liquid phase of the fluid. The contributions due to the standard van der Waals, as well as of the retarded (Casimir) van der Waals interactions are considered. We conclude that Fvdw strongly depends on the contrast, at given fixed T and μ, between the physical properties of the fluid and the material of the arms of the gripper and the particle. In addition, as expected, Fvdw strongly depends on the shape of the object, its size, and the distance L between it and the working jaw of the gripper. Concrete data for a large set of substances is presented. Our approach can be applied to any nonpolar fluid.
Galin Valchev Daniel Dantchev Kostadin Kostadinov
Institute of Mechanics, Bulgarian Academy of Sciences, Acad.G.Bonchev St.Bl.4, 1113 Sofia, Bulgaria
国际会议
长春
英文
1-6
2011-08-29（万方平台首次上网日期，不代表论文的发表时间）