Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/143681
Title: Bjerknes forces in motion : long-range translational motion and chiral directionality switching in bubble-propelled micromotors via an ultrasonic pathway
Authors: Moo, James Guo Sheng
Mayorga-Martinez, Carmen C.
Wang, Hong
Teo, Wei Zhe
Tan, Beng Hau
Luong, Trung Dung
Gonzalez-Avila, Silvestre Roberto
Ohl, Claus-Dieter
Pumera, Martin
Keywords: Science::Physics
Issue Date: 2018
Source: Moo, J. G. S., Mayorga-Martinez, C. C., Wang, H., Teo, W. Z., Tan, B. H., Luong, T. D., ... Pumera, M. (2018). Bjerknes forces in motion : long-range translational motion and chiral directionality switching in bubble-propelled micromotors via an ultrasonic pathway. Advanced Functional Materials, 28(25), 1702618-. doi:10.1002/adfm.201702618
Journal: Advanced Functional Materials
Abstract: Manipulation of a micromotor's locomotion has been the ultimate aim of scientists and engineers alike. While numerous roadmaps have been cast, the interswitching of the locomotion and directionality of these miniaturized machines remains elusive. In this report, ultrasound is utilized to produce stop/go motion on bubble‐propelled micromotors via Bjerknes forces. An intricate study using high‐speed camera on the interactions between the bubbles and micromotor is undertaken. The reciprocal action between oscillating bubbles aggregates and ejected microbubbles in an acoustic field demonstrate influence on the motion of the micromotor. Long‐range translational motion can be induced into the micromotor, when repulsive forces between bubble aggregates and ejected microbubbles are manifested in an acoustic field by Bjerknes forces. Additionally, such ultrasonic pulses demonstrate capability to change the directionality of the micromotor, where chirality of the locomotion can be switched. Here, introduction of pulses of ultrasonic irradiation demonstrates new capabilities to switch the motion of bubble‐propelled micromotors.
URI: https://hdl.handle.net/10356/143681
ISSN: 1616-3028
DOI: 10.1002/adfm.201702618
Rights: © 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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