Highly responsive core-shell microactuator arrays for use in viscous and viscoelastic fluids.

Autor: Briana L Fiser, Adam R Shields, M R Falvo, R Superfine
Předmět:
Zdroj: Journal of Micromechanics & Microengineering; Feb2015, Vol. 25 Issue 2, p1-1, 1p
Abstrakt: We present a new fabrication method to produce arrays of highly responsive polymer-metal core-shell magnetic microactuators. The core-shell fabrication method decouples the elastic and magnetic structural components such that the actuator response can be optimized by adjusting the core-shell geometry. Our microstructures are 10 µm long, 550 nm in diameter, and electrochemically fabricated in particle track-etched membranes, comprising a poly(dimethylsiloxane) core with a 100 nm Ni shell surrounding the upper 3–8 µm. The structures can achieve deflections of nearly 90° with moderate magnetic fields and are capable of driving fluid flow in a fluid 550 times more viscous than water. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index