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TU Dresden » Faculty of Mechanical Science and Engineering » Institute for Materials Science » Chair of Materials Science and Nanotechnology

Wednesday, 24 September 2014
(at 14:00 in room HAL 115)
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Understanding and controlling friction at different length scales

Andrea Benassi

EMPA Materials Science & Technology, Zurich, Switzerland

Despite its ubiquitousness, friction remains poorly understood, still challenging physicists and engineers more than 500 years after the Da Vinci\92s first attempt to characterize it. A theory capable of predicting the frictional behavior between bodies, once the materials and interface properties are given, still remains a dream. I will present our latest progresses in the basic understanding of the friction physics and its impact on nanomanipulation and macroscale mechanics. Most of the friction control techniques adopted by mechanical engineers do not apply at the nanoscale where physical laws scale differently and the leading mechanisms are adhesion and atomic periodicity rather than inertia and surface roughness. New friction control techniques we have recently proposed, both an the nano and micron scale, will be illustrated and discussed.

Brief Bio:

Andrea Benassi got his Ph.D. in Physics and Nanoscience at the University of Modena and Reggio Emilia (Italy) with a work on Casimir and Van der Waals forces in micro and nano mechanical systems. He subsequently joined the group of prof. Erio Tosatti at SISSA, Trieste (Italy) starting to work on nanoscale friction and other non-equilibrium phenomena at surfaces. After spending one year at CNR-IENI, Milano (Italy), in the Statistical Material Modeling Lab. of Dr. Stefano Zapperi he moved to Zurich at Empa - Federal Laboratories for Material Science and Technology. At present his research interests encompass several aspects of non-equilibrium dynamics and dissipation at surfaces and interfaces, both at the nano- and macro-scale.

Announcement (pdf)

Invited by G. Cuniberti

Within the Sonder nanoSeminar

last modified: 2021.10.02 Sat
author: webadmin