Prof. Eduard Arzt

• Tuesday, August 16 - 11:30 hrs.

Eduard Arzt is scientific director and chairman of INM – Leibniz Institute for New Materials in Saarbrücken, Germany, and Professor for New Materials at Saarland University, Germany. He studied physics and mathematics at the University of Vienna and the University of Leoben, Austria, and obtained his PhD in 1980. After a postdoctoral fellowship at Cambridge University, UK, he led a research group at the Max Planck Institute for Metals Research in Stuttgart, Germany. In 1990, he became director there with a joint appointment as Professor of Metals Physics at the University of Stuttgart, Germany. He was visiting professor at Stanford University and at the Massachusetts Institute of Technology and has spent sabbaticals at the MIT and the University of California, Santa Barbara and San Diego, USA. He joined INM – Leibniz Institute for New Materials, Germany, in 2007.

Arzt is the recipient of many awards, including the Max Planck Research Award (with W. D. Nix of Stanford University), and the Leibniz Prize, the highest German science award. He is corresponding member of the Austrian Academy of Science, and member of the German Academy of Science Leopoldina. The Institute for Scientific Information lists him as a highly cited materials scientist.


ABSTRACT

BIOINSPIRED MESOTEXTURED SURFACES FOR ADHESION - FROM BASICS TO APPLICATIONS

The ability to tailor surfaces for special adhesive functions is the central theme of this plenary lecture. Controlling adhesion and frictio is of great interest in microfabrication, biomedical industry, construction industry, sports equipment etc. One area is the manipulation of van der Waals forces by clever – mostly bioinspired – design of the surface topography. The amazing adhesion performance of flies, spiders and geckoes has inspired interesting new concepts. A common feature is the miniaturisation of fibrillar contact elements, which in the case of the gecko reach nanoscopic dimensions (100 nm). This talk will summarize our attempts to produce bio-inspired microtextured polymer surfaces. Through systematic variation of the decisive microstructural parameters, coupled with theoretical calculations and simulations, a clearer understanding of the adhesion mechanisms was obtained. Key parameters are size, aspect ratio and contact shape of the fibrils as well as environmental parameters such as humidity. The plenary talk will address three main aspects: i) new results on adhesion measurements using flat probes with a special arrangements that allows precise alignment, ii) processes that allow up-scaling of patterning to large areas and iii) the synthesis of hierarchically structured surfaces and those in which the adhesive performance can be addressed or switched from a non-adhesive to an adhesive state or vice versa. Possible areas of application for such “smart” surfaces will be addressed.

Keywords: Surface, adhesion, mesostructure







Prof. Eduard Arzt


Professor für Neue Materialien
Universität des Saarlandes
INM-Leibniz-Institut für Neue Materialien/INM
Saarbruecken, Germany





PLENARY LECTURES


Ivan Schuller

Sumio Iijima

Dan Shechtman


  
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XX INTERNATIONAL MATERIALS RESEARCH CONGRESS 2011
© 2010 , Sociedad Mexicana de Materiales
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