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Heat‐Free Biomimetic Metal Molding on Soft Substrates
Author(s) -
Chang Julia J.,
Martin Andrew,
Du Chuanshen,
Pauls Alana M.,
Thuo Martin
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202008621
Subject(s) - materials science , sintering , metal , nanotechnology , filtration (mathematics) , substrate (aquarium) , fabrication , molding (decorative) , chemical engineering , composite material , metallurgy , medicine , statistics , oceanography , mathematics , alternative medicine , pathology , engineering , geology
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.