Issue 21, 2021

Biologically inspired micro-robotic swimmers remotely controlled by ultrasound waves

Abstract

We 3D print micro-robotic swimmers with the size of animal cells using a Nanoscribe. The micro-swimmers are powered by the microstreaming flows induced by the oscillating air bubbles entrapped within the micro-robotic swimmers. Previously, micro-swimmers propelled by acoustic streaming require the use of a magnetic field or an additional ultrasound transducer to steer their direction. Here, we show a two-bubble based micro-swimmer that can be propelled and steered entirely using one ultrasound transducer. The swimmer displays boundary following traits similar to those biological swimmers that are known to be important for performing robust biological functions. The micro-robotic swimmer has the potential to advance the current technology in targeted drug delivery and remote microsurgery.

Graphical abstract: Biologically inspired micro-robotic swimmers remotely controlled by ultrasound waves

Supplementary files

Article information

Article type
Paper
Submitted
29 Jun 2021
Accepted
10 Sep 2021
First published
10 Sep 2021

Lab Chip, 2021,21, 4095-4103

Biologically inspired micro-robotic swimmers remotely controlled by ultrasound waves

T. Luo and M. Wu, Lab Chip, 2021, 21, 4095 DOI: 10.1039/D1LC00575H

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