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Published on: December 16, 2022
A Bubble-Dragged Catalytic Polymer Microrocket
Tieyan Si1, Xian Zou1, Zhiguang Wu1,2
1Key Laboratory of Microsystems and Microstructures Manufacturing (Ministry of Education), Physics department, School of Science, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Yi kuang jie 2, Harbin, 150080, China.
Abstract:
We report the bubble dragged microrocket consisting of functionalized multilayer polymer covered asymmetrically by platinum nanoparticles. The microrocket is pushed back during bubble growth over a small step and dragged forward over a big step during bubble explosion. Each bubble explosion induced a shock wave of gas which propagates in water at ultrafast speed. The bubble dragged microrocket can move along an approximate straight line instead of a fluctuating circle which is the trajectory of a bubble-pushed microrocket in most cases, which makes it a promising candidate for drug delivery and simulating rod-shaped bacteria.
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