Samenvatting
Fingertip 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.
Originele taal-2 | Engels |
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Artikelnummer | 2209729 |
Aantal pagina's | 8 |
Tijdschrift | Advanced Materials |
Volume | 35 |
Nummer van het tijdschrift | 18 |
DOI's | |
Status | Gepubliceerd - 4 mei 2023 |
Bibliografische nota
Publisher Copyright:© 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.
Financiering
The authors thank Charlotte Bording for drawing the schematic illustration of the LCN fingerprint coatings. Dongyu Zhang is financially supported by the China Scholarship Council (CSC). This research forms part of the research program financed by the Netherlands Organization for Scientific Research (NWO OCENW.KLEIN. 10854, START-UP 8872) and the European Union's Horizon 2020 Research. The authors thank Charlotte Bording for drawing the schematic illustration of the LCN fingerprint coatings. Dongyu Zhang is financially supported by the China Scholarship Council (CSC). This research forms part of the research program financed by the Netherlands Organization for Scientific Research (NWO OCENW.KLEIN. 10854, START‐UP 8872) and the European Union's Horizon 2020 Research.