Self-sufficient self-oscillating microsystem driven by low power at low Reynolds numbers

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Date
2021
Volume
7
Issue
44
Journal Title
Title
Series Titel
Publisher
Washington, DC [u.a.] : American Association for the Advancement of Science
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Abstract

Oscillations at several hertz are a key feature of dynamic behavior of various biological entities, such as the pulsating heart, firing neurons, or the sperm-beating flagellum. Inspired by nature’s fundamental self-oscillations, we use electroactive polymer microactuators and three-dimensional microswitches to create a synthetic electromechanical parametric relaxation oscillator (EMPRO) that relies on the shape change of micropatterned polypyrrole and generates a rhythmic motion at biologically relevant stroke frequencies of up to ~95 Hz. We incorporate an Ag-Mg electrochemical battery into the EMPRO for autonomous operation in a nontoxic environment. Such a self-sufficient self-oscillating microsystem offers new opportunities for artificial life at low Reynolds numbers by, for instance, mimicking and replacing nature’s propulsion and pumping units.

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Keywords
Binary alloys, Microsystems, Oscillators (electronic), Polypyrroles, Reynolds number, Silver alloys
Citation
Akbar, F., Rivkin, B., Aziz, A., Becker, C., Karnaushenko, D. D., Medina-Sánchez, M., et al. (2021). Self-sufficient self-oscillating microsystem driven by low power at low Reynolds numbers. 7(44). https://doi.org//10.1126/sciadv.abj0767
License
CC BY 4.0 Unported