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ADHESION IN BALL ON FLAT MICROSYSTEMS


Gelu IANUŞ1

Dumitru OLARU1
dumitru_olaru@yahoo.com

Peter LORENZ2


1 Technical University “Gh. Asachi” Iasi, Dept. of Machine Design & Mechatronics, ROMANIA
2 Hochschule fur Technik und Wirtshaft des Saarlandes HTW, GERMANY


 

Abstract. In the field of microsystems, adhesion force between the two contact surfaces has an important contribution to the friction losses. Two adhesion models have been presented and compared with the classical Hertzian model: the Johnson–Kendall–Roberts (JKR) model and the Derjaguin-Muller-Toporov (DMT) model. Using the above adhesion mentioned models, friction coefficient in a micro balls linear system has been analytical investigated.
 

 

Keywords: adhesion, adhesive contacts, contact mechanics, sphere–plane contact

 

 

References

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  2. Butt H.J., Cappella, B., Kappl M., 2005, “Force Measurements with the Atomic Force Microscope: Technique, Interpretation and Applications,” Surface Science Reports 59, 1–152.

  3. Sridhar, I., Sivashanker, S., 2003, “On the Adhesion Mechanics of Multi-Layer Elastic Systems,” Surface and Coatings Technology, 167, pp. 181–187.

  4. Johnson K. L., Greenwood J. A., 1997, “An Adhesion Map for the Contact of Elastic Spheres,” Journal of Colloid and Interface Science, 192, pp. 326– 333, article no. cs974984

  5. Lin T.W., Modafe A., Shapiro, B., Ghodssi, R., 2004, “Characterization of Dynamic Friction in MEMS – Based Microball Bearings,” IEE Transaction of Instrumentation and Measurement, vol.53, no.3, June, pp.839-845.

  6. Olaru D.N., Lorenz P., Rudy, D., 2004, “Frictioni in the Micro-Rolling Linear Systems for MEMS Applications,” VAREHD 12, Suceava, 8-9 October.