Particle trapping for acoustic tweezers

Yanyan Yu, Weibao Qiu, Lei Sun

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)


The optical tweezers has been found to have many biomedical applications in trapping macromolecules and cells. A recent theoretical study has shown that under appropriate conditions acoustic trapping is also possible [1]. Compared to the optical tweezers, the acoustic tweezers is more useful in light opaque media. In this paper, first we present the range where a particle can be trapped in single focused field along the axial direction from a 100MHz concave circular transducer on various sizes of particles. Secondly, we also proposed a multitrap model of acoustic tweezers which can trap 4 particles simultaneously. A 100MHz 2-D phased array with each line composed of 80 elements was used to generate and control the multiple-focus acoustic field. Both of the two fields generated by concave circular and phased array transducer were evaluated based on finite-element model. The radiation force was computed by the momentum transfer occurs between the mediums inside and outside the particle according to the law of conservation. The result demonstrates that the acoustic tweezers not only can manipulate larger particles, but also owns the feasibility of multitrap.
Original languageEnglish
Title of host publication2011 IEEE International Ultrasonics Symposium, IUS 2011
Number of pages4
Publication statusPublished - 1 Dec 2011
Event2011 IEEE International Ultrasonics Symposium, IUS 2011 - Orlando, FL, United States
Duration: 18 Oct 201121 Oct 2011


Conference2011 IEEE International Ultrasonics Symposium, IUS 2011
Country/TerritoryUnited States
CityOrlando, FL

ASJC Scopus subject areas

  • Acoustics and Ultrasonics


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