Jump to main content
Jump to site search

Issue 7, 2016
Previous Article Next Article

Batch process particle separation using surface acoustic waves (SAW): integration of travelling and standing SAW

Author affiliations

Abstract

Acoustic fields offer a versatile and non-contact method for particle and cell manipulation, where several acoustofluidic systems have been developed for the purpose of sorting. However, in almost all cases, these systems utilize a steady flow to either define the exposure time to the acoustic field or to counteract the acoustic forces. Batch-based systems, within which sorting occurs in a confined volume, are compatible with smaller sample volumes without the need for externally pumped flow, though remain relatively underdeveloped. Here, the effects of utilizing a combination of travelling and standing waves on particles of different sizes are examined. We use a pressure field combining both travelling and standing wave components along with a swept excitation frequency, to collect and isolate particles of different sizes in a static fluid volume. This mechanism is employed to demonstrate size-based deterministic sorting of particles. Specifically, 5.1 μm and 7 μm particles are separated using a frequency range from 60 MHz to 90 MHz, and 5.1 μm particles are separated from 3.1 μm using an excitation sweeping between 70 MHz and 120 MHz.

Graphical abstract: Batch process particle separation using surface acoustic waves (SAW): integration of travelling and standing SAW

Back to tab navigation

Supplementary files

Publication details

The article was received on 18 sep. 2015, accepted on 22 des. 2015 and first published on 07 jan. 2016


Article type: Paper
DOI: 10.1039/C5RA26965B
Author version
available:
Download author version (PDF)
Citation: RSC Adv., 2016,6, 5856-5864
  •   Request permissions

    Batch process particle separation using surface acoustic waves (SAW): integration of travelling and standing SAW

    C. Devendran, N. R. Gunasekara, D. J. Collins and A. Neild, RSC Adv., 2016, 6, 5856
    DOI: 10.1039/C5RA26965B

Search articles by author

Spotlight

Advertisements