Bioinspired micromechanical interlocking structures for enhanced adherence between soft elastomeric layers

Navajit S. Baban, Ajymurat Orozaliev, Christopher J. Stubbs, Yong Ak Song

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Bioinspired by the role of stratum spinosum's microinterlocks in enabling firm interlayer adherence of human skin, we fabricated a highly dense 2D array of spherical microstructures with an undercut up to ~20 degrees to create microinterlocks in polydimethylsiloxane (PDMS) layers. A single bend cantilever fracture test demonstrated a 3-5 fold increase in adhesion strength compared to the plain layers and 30-35 % compared to the hemispherical counterparts without undercuts. These bioinspired microstructures could open up new potential applications in augmenting adherence between soft layers of engineered tissues and in 3D bioprinting.

Original languageEnglish (US)
Title of host publication23rd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2019
PublisherChemical and Biological Microsystems Society
Pages1130-1131
Number of pages2
ISBN (Electronic)9781733419000
StatePublished - 2019
Event23rd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2019 - Basel, Switzerland
Duration: Oct 27 2019Oct 31 2019

Publication series

Name23rd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2019

Conference

Conference23rd International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2019
CountrySwitzerland
CityBasel
Period10/27/1910/31/19

Keywords

  • Adhesion
  • Fracture mechanics
  • Microinterlocks
  • Peeling test
  • Tissue engineering

ASJC Scopus subject areas

  • Bioengineering
  • Chemical Engineering (miscellaneous)

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