Details

Autor(en) / Beteiligte

• Chang, Julia J.
• Martin, Andrew
• Du, Chuanshen
• Pauls, Alana M.
• Thuo, Martin

Titel

Heat‐Free Biomimetic Metal Molding on Soft Substrates

Ist Teil von

• Angewandte Chemie International Edition, 2020-09, Vol.59 (38), p.16346-16351

Auflage

International ed. in English

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2020

Quelle

MEDLINE

Beschreibungen/Notizen

• 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. By exploiting packing, jamming, self‐filtration, and kinetics, we developed a heat‐free biomimetic metal patterning (abbreviated BIOMAP) using delicate rose petals. Rose‐like structures, both inverse (yin/−) as well as direct (yang/+), were replicated using undercooled liquid metal core–shell particles. Textured metal patterns were created with great accuracy, and with reproducibility such that patterns from closely related cultivars can be differentiated. Both structure and wetting properties are conserved.