Dielectrophoretic trapping without embedded electrodes

Eric B. Cummings; Anup K. Singh

doi:10.1117/12.395653

18 August 2000 Dielectrophoretic trapping without embedded electrodes

Eric B. Cummings, Anup K. Singh

Proceedings Volume 4177, Microfluidic Devices and Systems III; (2000) https://doi.org/10.1117/12.395653
Event: Micromachining and Microfabrication, 2000, Santa Clara, CA, United States

Abstract

We observe dielectrophoretic effects in mixed electrokinetic and dielectrophoretic flows in uniform arrays of posts. Above a threshold applied electric field, flowing filaments of concentrated and rarefied particles appear in the flow. Above a higher-threshold applied field, zones of highly concentrated, immobilized particles appear. At the lower and higher thresholds, dielectrophoresis apparently begins to dominate diffusion and advection/electrokinesis, respectively. The patterns of filaments and trapped zones depend dramatically on the angle of the array with respect to the mean applied electric field and the shape of the posts in the array.

Citation Download Citation

Eric B. Cummings and Anup K. Singh "Dielectrophoretic trapping without embedded electrodes", Proc. SPIE 4177, Microfluidic Devices and Systems III, (18 August 2000); https://doi.org/10.1117/12.395653

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