4.8 Article

Heat-Free Biomimetic Metal Molding on Soft Substrates

Journal

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 38, Pages 16346-16351

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202008621

Keywords

biomimetics; heat-free; self-filtration; soft lithography; ultra-hydrophobic

Funding

  1. Iowa state university through intellectual property royalty funds

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Fabrication of bio-templated metallic structures is limited by differences in properties, processing conditions, packing, and material state(s). Herein, by using undercooled metal particles, differences in modulus and processing temperatures can be overcome. Adoption of autonomous processes such as self-filtration, capillary pressure, and evaporative concentration leads to enhanced packing, stabilization (jamming) and point sintering with phase change to create solid metal replicas of complex bio-based features. Differentiation of subtle differences between cultivars of the rose flower with reproduction over large areas shows that this biomimetic metal patterning (BIOMAP) is a versatile method to replicate biological features either as positive or negative reliefs irrespective of the substrate. Using rose petal patterns, we illustrate the versatility of bio-templated mapping with undercooled metal particles at ambient conditions, and with unprecedented efficiency for metal structures.

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