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Switchable bumps of a bead-embedded elastomer surface with variable adhesion.

T Ohzono1, K Teraoka1

  • 1Research Institute for Sustainable Chemistry, AIST, 1-1-1 Higashi, Tsukuba, 305-8565, Japan. ohzono-takuya@aist.go.jp ok-teraoka@aist.go.jp.

Soft Matter
|November 15, 2017
PubMed
Summary
This summary is machine-generated.

A novel composite material with embedded beads on an elastomer surface creates a shape-tunable surface. Applying tensile strain reversibly forms bumps, switching tribological properties like adhesion.

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Area of Science:

  • Materials Science
  • Surface Engineering
  • Composite Materials

Background:

  • Developing materials with tunable surface properties is crucial for advanced applications.
  • Controlling surface topography and associated properties like adhesion remains a challenge.

Purpose of the Study:

  • To propose a simple structural design for a shape-tunable composite surface.
  • To demonstrate reversible surface topography changes in response to mechanical strain.
  • To investigate the switchable tribological properties of the designed material.

Main Methods:

  • Fabrication of a composite material consisting of an elastomer sheet with embedded hard beads at the surface.
  • Application of in-plane tensile strain to the composite surface.
  • Observation of surface topography changes (bumps/undulations).
  • Evaluation of tribological properties, specifically adhesion, under different strain conditions.

Main Results:

  • The proposed composite structure successfully achieved a shape-tunable surface.
  • Reversible formation of surface bumps and undulations was observed upon application and release of tensile strain.
  • Tribological properties, including adhesion, were demonstrated to be switchable, correlating with the surface topography changes.

Conclusions:

  • A simple and effective design for a shape-tunable composite surface has been presented.
  • The material exhibits reversible topographical changes, enabling switchable surface functionalities.
  • This approach offers potential for developing advanced materials with tunable adhesion and other tribological characteristics.