Bjerknes Forces in Motion

Long-Range Translational Motion and Chiral Directionality Switching in Bubble-Propelled Micromotors via an Ultrasonic Pathway

James Guo Sheng Moo, Carmen C. Mayorga-Martinez, Hong Wang, Wei Zhe Teo, Beng Hau Tan, Trung Dung Luong, Silvestre Roberto Gonzalez-Avila, Claus Dieter Ohl, Martin Pumera

Research output: Contribution to journalArticle

6 Citations (Scopus)

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.

Original languageEnglish
Article number1702618
JournalAdvanced Functional Materials
Volume28
Issue number25
DOIs
Publication statusPublished - 2018 Jun 20

Fingerprint

micromotors
Micromotors
translational motion
bubbles
ultrasonics
Ultrasonics
locomotion
Acoustic fields
acoustics
high speed cameras
Chirality
High speed cameras
pulses
chirality
engineers
casts
manipulators
Switches
Irradiation
Engineers

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Electrochemistry

Cite this

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. / Bjerknes Forces in Motion : Long-Range Translational Motion and Chiral Directionality Switching in Bubble-Propelled Micromotors via an Ultrasonic Pathway. In: Advanced Functional Materials. 2018 ; Vol. 28, No. 25.
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Bjerknes Forces in Motion : Long-Range Translational Motion and Chiral Directionality Switching in Bubble-Propelled Micromotors via an Ultrasonic Pathway. / 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.

In: Advanced Functional Materials, Vol. 28, No. 25, 1702618, 20.06.2018.

Research output: Contribution to journalArticle

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