OET meets acoustic tweezing

Christian Witte; Rab Wilson; Jonathan M. Cooper; Steven L. Neale

doi:10.1117/12.928698

10 October 2012 OET meets acoustic tweezing

Christian Witte, Rab Wilson, Jonathan M. Cooper, Steven L. Neale

Proceedings Volume 8458, Optical Trapping and Optical Micromanipulation IX; 84582I (2012) https://doi.org/10.1117/12.928698
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

Abstract

We present a micromanipulation system based on dielectrophoretic and acoustophoretic particle tweezing. The combination of non-uniform electrical fields and standing pressure waves is applied to a microfluidic chip and provides essential functions including concentration, focussing, guiding, trapping and sorting of microparticles. Dielectrophoresis is achieved using a photoconductor integrated into a microchannel chip which generates electric fields upon illumination. Acoustophoresis is achieved utilizing a surface acoustic wave device which transmits ultrasound into the chip and forms a pressure standing wave under resonance conditions. The system is characterized in terms of coupling of acoustic energy into the chip as well as dielectrophoretic trapping and guiding efficiency. The individual control of each techniques is demonstrated and applied for sorting of polystyrene beads by dielectrophoretic and acoustophoretic forces.

Citation Download Citation

Christian Witte, Rab Wilson, Jonathan M. Cooper, and Steven L. Neale "OET meets acoustic tweezing", Proc. SPIE 8458, Optical Trapping and Optical Micromanipulation IX, 84582I (10 October 2012); https://doi.org/10.1117/12.928698

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available