Multifrequency Acoustic Levitation

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


Acoustic levitation permits non-contact particle manipulation. The position and orientation of the levitated particle can be controlled by altering the acoustic field. Existing acoustic levitators have employed a single frequency which limits the types of acoustic traps that can be created. The use of multiple frequencies makes it possible to control the forces acting on a particle independently in all directions. We predict theoretically the forces acting on particles placed in the acoustic fields created with multiple coexisting frequencies. To realize the fields, we constructed a 450-channel phased array acoustic levitator with individual frequency, phase, and amplitude control for each channel.
Original languageEnglish
Title of host publication2019 IEEE International Ultrasonics Symposium (IUS)
Number of pages4
Publication date2019
ISBN (Print)978-1-7281-4595-2
ISBN (Electronic)978-1-7281-4596-9
Publication statusPublished - 2019
MoE publication typeA4 Article in conference proceedings
EventIEEE International Ultrasonics Symposium - Glasgow, United Kingdom
Duration: 6 Oct 20199 Oct 2019
Conference number: 11

Publication series

NameIEEE International Ultrasonics Symposium
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727

Fields of Science

  • 114 Physical sciences
  • 221 Nano-technology

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