The Feasibility and Design of Multifrequency Acoustic Traps

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding


Single frequency acoustic traps are widely applied to microparticle trapping, filtering, sorting and manipulation. This work considers how additional frequencies can be used to achieve better trapping. The acoustic radiation force on a small (sub-wavelength) particle in a rigid walled cavity vibrating at multiple harmonic frequencies is calculated analytically and applied to developing a trap with large regions of near constant force and a stiff local trap at the cavity center. A 1D transmission line model is used to demonstrate that these multi-frequency traps should be realizable in a straight forward acoustic system and that the trap stiffness can be increased more than 2.5 ×compared to a single frequency trap without increasing power requirements or the acoustic intensity in the chamber.

Original languageEnglish
Title of host publication2021 IEEE International Ultrasonics Symposium (IUS)
ISBN (Electronic)978-1-6654-0355-9
ISBN (Print)978-1-6654-4777-5
Publication statusE-pub ahead of print - 13 Nov 2021
Event2021 IEEE International Ultrasonics Symposium, IUS 2021 - Virtual, Online, China
Duration: 11 Sept 201116 Sept 2011

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719


Conference2021 IEEE International Ultrasonics Symposium, IUS 2021
CityVirtual, Online


  • Acoustic Radiation Force
  • Acoustic Tweezers
  • Ultrasonics

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


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