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CLASS:PUBLIC
SUMMARY:Micropatterned adhesive surfaces, from bioinspiration to robotics
DTSTART;TZID=Europe/Berlin:20180516T130000
DTEND;TZID=Europe/Berlin:20180516T000000
DTSTAMP:20180516T130000Z
LOCATION;ENCODING=QUOTED-PRINTABLE:Campus Campus Duisburg : Hörsaal MC 122
CONTACT:Frau Marion  Hannemann ()
DESCRIPTION:Frau Marion  Hannemann ()
Micropatterned adhesive surfaces, from bioinspiration to robotics
Prof. Dr. Eduard Arzt, Leibniz-Institut für Neue Materialien gGmbH
3D micropatterning of surfaces signifies a recent paradigm shift for control of surface functionalities: the exploitation of judiciously designed surface protrusions, “fibrils” and other features at the micron scale. Inspired by natural examples, such as in insects, spiders and geckos, several groups have fabricated surfaces with interesting adhesive properties derived from micropatterning. This talk will give an overview of our novel adhesive surfaces with special emphasis on mechanisms and modeling. We were among the first to identify the governing principle of „contact splitting“, i.e. the gain in intermolecular adhesion due to a multitude of fine fibrillar contacts instead of one monolithic contact region. We have demonstrated that a switching action to a nonadhesive state can be reproducibly achieved, for example, by inducing bending and Euler buckling in the fibrils. 
Wednesday, 16. May 2018
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