Rapid mode-switching for acoustic manipulation

Kourosh Latifi, Artur Kopitca, Quan Zhou

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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Acoustic manipulation techniques are becoming increasingly common with a range of applications in the biomedical research, microassembly, and lab-on-a-chip. Recently, a class of devices have attracted considerable attention which utilize dynamic and reconfigurable acoustic fields, known as dynamic-field acoustic devices. A common method of applying dynamic fields is to use mode-switching by rapidly altering the excitation frequency. Such methods generally rely on the switching being performed faster than the time constant associated with the particle motion. Nevertheless, it remains a grand challenge to eliminate or at least reduce the switching time to a minimal value. In this paper, we suggest employing a high-speed controller to minimize the switching time, enabling continuous particle manipulation in a dynamic-field acoustic device. As a proof-of-concept, we apply such idea to a classic acoustic manipulation device, a Chladni plate which consists of a centrally-actuated vibrating plate. By employing a closed-loop real-time controller, we show successful manipulation of particles on the plate on predefined trajectories. The high-speed switching methodology can also be applied to other dynamic-field acoustic methods, such as surface acoustic wave (SAW) devices, acoustic levitators, and in-fluid acoustic devices. This can result in faster and smoother particle manipulation in such devices.

Original languageEnglish
Title of host publicationProceedings of the 4th International Conference on Manipulation, Automation, and Robotics at Small Scales, MARSS 2019
EditorsSinan Haliyo, Albert Sill, Quan Zhou, Pasi Kallio, Sergej Fatikow
Number of pages6
ISBN (Electronic)9781728109473
Publication statusPublished - 1 Jul 2019
MoE publication typeA4 Conference publication
EventInternational Conference on Manipulation, Automation and Robotics at Small Scales - TUAS, Maarintie 8, Espoo, Finland
Duration: 1 Jul 20195 Jul 2019


ConferenceInternational Conference on Manipulation, Automation and Robotics at Small Scales
Abbreviated titleMARSS
Internet address


  • Acoustic manipulation
  • Chladni plate
  • Dynamic-filed acoustic device
  • Mode-switching
  • Model predictive control
  • Real-time control


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