Gas-phase microactuation using kinetically controlled surface states of ultrathin catalytic sheets.

ABSTRACT: Biological systems convert chemical energy into mechanical work by using protein catalysts that assume kinetically controlled conformational states. Synthetic chemomechanical systems using chemical catalysis have been reported, but they are slow, require high temperatures to operate, or indirectly perform work by harnessing reaction products in liquids (e.g., heat or protons). Here, we introduce a bioinspired chemical strategy for gas-phase chemomechanical transduction that sequences the elementary steps of catalytic reactions on ultrathin (<10 nm) platinum sheets to generate surface stresses that directly drive microactuation (bending radii of 700 nm) at ambient conditions (T = 20 °C; P_total = 1 atm). When fueled by hydrogen gas and either oxygen or ozone gas, we show how kinet

SUBMITTER: Bao N 

PROVIDER: S-EPMC10175785 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature