A Giant, High-frequency Oscillation of Metal Strip Actuator under DC Electric Field

TL;DR

This paper introduces a novel aluminum alloy-based metal actuator that exhibits high-frequency oscillations under DC electric fields, characterized by stable, durable, and easily tunable flapping motion suitable for various micro-scale applications.

Contribution

The study presents the first demonstration of a high-frequency metal actuator made from aluminum alloy, highlighting its stability, ease of fabrication, and potential for diverse technological uses.

Findings

High-frequency oscillation achieved in aluminum alloy actuator

Stable operation over several days without fatigue

Easy fabrication and tunable frequency capabilities

Abstract

Different from conventional electroactive polymers, here we firstly present a new facile actuator made from aluminum alloy. The high-frequency electrically induced flapping motion was characterized under varied physical factors. This electroactuation results from alternative processes of charge induction and discharge, which is confirmed by the existence of periodical pulse current in the circuit. The metal actuator is of great stability and can maintain several days if not for any structural fatigue. Easy fabrication, high tunable frequency and durability make it potential for implementation of actuators for sensors, microelectromechanical systems and robotics.