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Lecture

Wrinkle Motifs: patterning to applications

Thursday (19.03.2020)
11:20 - 11:40
Part of:


Wrinkled patterns are the result of mechanical instability induced by a mechanical mismatch between two layers that is easy to handle, reproducible, and very robust. A well-known way to gain such structures represents the oxidation of pre-strained polydimethylsiloxane (PDMS) slab by plasma treatment. It creates in situ a glassy layer on top, while the consequent strain relaxation of the two-layer system results in a mechanical buckling instability that forms permanent wrinkles perpendicular to the strain direction. Using oblique angle deposition (OAD), we create material contrast over the surface. As an outcome, we demonstrate a Resistive-type pressure sensor operating in a wide range of pressure with response time in the millisecond range. Finite element modeling (FEM) and the modification of the electrode pattern give insight into the performance of our constructed device.

Speaker:
Anik Kumar Ghosh
Leibniz Institute of Polymer Research Dresden (IPF)
Additional Authors:
  • Takuya Tsuda
    Leibniz Institute of Polymer Research Dresden (IPF)
  • Dr. Soosang Chae
    Leibniz Institute of Polymer Research Dresden (IPF)
  • Dr. Sven Wiessner
    Leibniz Institute of Polymer Research Dresden (IPF)
  • Dr. Amit Das
    Leibniz Institute of Polymer Research Dresden (IPF)
  • Prof. Dr. Andreas Fery
    Leibniz Institute of Polymer Research Dresden (IPF)