Affiliation:
1. Department of Chemical Engineering and Chemistry Eindhoven University of Technology Groene Loper 3 Eindhoven 5612 AE Netherlands
2. Institute for Complex Molecular Systems (ICMS) Eindhoven University of Technology Groene Loper 3 Eindhoven 5612 AE Netherlands
3. Joint Research Lab of Devices Integrated Responsive Materials South China Normal University Guangzhou 510006 China
Abstract
AbstractFingertip perspiration is a vital process within human predation, to which the species owes its survival and its biological success. In this paper, the unique human ability of extensive perspiration and controlled friction in self‐assembled cholesteric liquid crystals is recreated, mimicking the natural processes that occur in the dermis and epidermis of human skin. This is achieved by inducing porosity in responsive, liquid‐bearing material through the controlled‐polymerization phase‐separation process. The unique topography of human fingerprints is further emulated in the materials by balancing the parallel chirality‐induced force and the perpendicular substrate‐anchoring force during synthesis. As a result, artificial fingertips are capable of secreting and re‐absorbing liquid upon light illumination. By demonstrating the function of the soft material in a tribological aspect, it exhibits a controllable anti‐sliding property comparable to human fingertips and subsequently attains a higher degree of biomimicry. This biomimetic fingertip is envisioned being applied in a multitude of fields, ranging from biomedical instruments to interactive, human‐like soft robotic devices.
Funder
China Scholarship Council
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
13 articles.
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