@phdthesis{Barreau2017,
  author    = {Barreau, Viktoriia},
  title     = {Adhesion of micropatterned adhesives to rough substrates and at elevated temperatures},
  organization    = {INM - Leibniz-Institut f{\"u}r Neue Materialien},
  doi       = {10.22028/D291-27035},
  school    = {Universit{\"a}t des Saarlandes},
  pages     = {XI, 104},
  year      = {2017},
  abstract  = {The gecko is of high interest for scientists due to its ability to attach and to move on different surfaces with various roughnesses. To date, research groups worldwide aim to study adhesion mechanisms of gecko-like structures and to mimic gecko adhesion. However, most investigations have been performed in controlled environments and under near to ideal conditions, which present a significant constraint for transferring the results to applications. Therefore, two important parameters have been the subject of investigations in the present work, the surface roughness and elevated temperatures. For the first time, the impact of roughness on the adhesion of gecko-like, micropatterned structures was systematically studied. Two adhesive regimes, which are dependent on the pillar geometry and the roughness parameters, were discovered: an adhesive and a non -adhesive regime. The influence of the temperature on adhesion was studied on micropatterned samples fabricated out of three materials, which are interesting candidates for industrial applications. Promising correlations were determined between the temperature dependent mechanical properties and the adhesion values: the glass transition temperature was identified as the temperature of maximum adhesion. These results can support the improvement of bioinspired adhesives for industrial applications.},
  language  = {en}
}