Hybrid optical and acoustic force based sorting

Paul O'Mahoney, Graham W. Brodie, Han Wang, Christine E. M. Demore, Sandy Cochran, Gabriel C. Spalding, Michael P. MacDonald

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


We report the combined use of optical sorting and acoustic levitation to give particle sorting. Differing sizes of microparticles are sorted optically both with and without the aid of acoustic levitation, and the results compared to show that the use of acoustic trapping can increase sorting efficiency. The use of a transparent ultrasonic transducer is also shown to streamline the integration of optics and acoustics. We also demonstrate the balance of optical radiation pressure and acoustic levitation to achieve vertical sorting.

Original languageEnglish
Title of host publicationOptical Trapping and Optical Micromanipulation XI
EditorsKishan Dholakia, Gabriel C. Spalding
Place of PublicationBellingham
PublisherSPIE-International Society for Optical Engineering
ISBN (Print)9781628411911
Publication statusPublished - 2014
EventSPIE Optics + Photonics 2014: Optical Trapping and Optical Micromanipulation XI - San Diego Convention Center, San Diego, United States
Duration: 17 Aug 201421 Aug 2014

Publication series

NameProceedings of SPIE


ConferenceSPIE Optics + Photonics 2014: Optical Trapping and Optical Micromanipulation XI
CountryUnited States
CitySan Diego
Internet address


  • Acoustic
  • Levitation
  • Microfluidics
  • Optical
  • Sorting

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