Liquid metal actuator for inducing chaotic advection

S.-Y. Tang, V. Sivan, P. Petersen, W. Zhang, P.D. Morrison, K. Kalantar-zadeh, A. Mitchell, K. Khoshmanesh

Research output: Contribution to journalArticlepeer-review

121 Citations (Scopus)


Chaotic advection plays an important role in microplatforms for a variety of applications. Currently used mechanisms for inducing chaotic advection in small scale, however, are limited by their complicated fabrication processes and relatively high power consumption. Here, a soft actuator is reported which utilizes a droplet of Galinstan liquid metal to induce harmonic Marangoni flow at the surface of liquid metal when activated by a sinusoidal signal. This liquid metal actuator has no rigid parts and employs continuous electrowetting effect to induce chaotic advection with exceptionally low power consumption. The theory behind the operation of this actuator is developed and validated via a series of experiments. The presented actuator can be readily integrated into other microfluidic components for a wide range of applications.
Original languageEnglish
Pages (from-to)5851-5858
Number of pages8
JournalAdvanced Functional Materials
Issue number37
Early online date14 Jul 2014
Publication statusPublished - 1 Oct 2014


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