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Research Conducted at Nagaoka University of Technology Has Provided New Information about Tribology

February 4, 2014

By a News Reporter-Staff News Editor at Journal of Technology -- Investigators discuss new findings in Tribology. According to news reporting from Nagaoka, Japan, by VerticalNews journalists, research stated, "Recently, micro- and nanomachines for microelectromechanical systems and the mechanism of bio-adhesive pads have attracted great interest. Nanoscale structures are affected by forces such as the van der Waals force, even though they are neglected in large-scale structures."

The news correspondents obtained a quote from the research from the Nagaoka University of Technology, "In this paper, the van der Waals force is introduced to a boundary element method (BEM) program for analyzing adhesion in arbitrarily shaped bodies. The van der Waals force is described by a nonlinear function of the distance between two surfaces in close proximity, and the adhesion and repulsion forces vary greatly within the atom equilibrium distance. Therefore, it is difficult to obtain a solution for the simultaneous equation in the BEM. We propose a method to compute the body deformation and apply it to the adhesion between a cylinder and a flat, rigid substrate. The solution is compared with previously published theoretical results, and the validity of the algorithm for approaching the solution is demonstrated."

According to the news reporters, the research concluded: "Further calculations for the adhesive contact of softer and harder cylinders with a rigid substrate are conducted."

For more information on this research see: Adhesion Analysis Considering van der Waals Force in a NanoSized Region Using the Boundary Element Method. Tribology Letters, 2014;53(1):225-235. Tribology Letters can be contacted at: Springer, Plenum Publishers, 233 Spring St, New York, NY 10013, USA. (Springer -; Tribology Letters -

Our news journalists report that additional information may be obtained by contacting Y. Yamamoto, Nagaoka Univ Technol, Dept. of Mech Engn, Nagaoka, Niigata 9402188, Japan. Additional authors for this research include M. Inui and H. Koguchi.

Keywords for this news article include: Asia, Japan, Nagaoka, Tribology

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Source: Journal of Technology

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