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Mapping electric fields generated by microelectrodes using optically trapped charged microspheres

delete2011-01-01
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PRE
AI
G
Giuseppe Pesce *
B
Biagio Mandracchia
E
Emanuele Orabona
G
Giulia Rusciano
L
Luca De Stefano
A
Antonio Sasso
DOI:10.1039/c1lc20432gdelete
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Abstract

Abstract

En 中文
In this work, we show a new technique to measure the direction and amplitude of the electric field generated by microelectrodes in a liquid environment, as often used in microfluidic devices. The method is based on the use of optical tweezers as a force transducer. A trapped, charged particle behaves as a probe. With this technique, it is possible to obtain a detailed map of the electric field, even for very complex electrode structures with a resolution below a micrometre and with a sensitivity as low as a few hundreds of V m(-1).
Keywords:
TWEEZERS
VISCOSITY
FORCES
CELLS
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Journal

L
Lab on a Chip
IF:
5.4
Papers:
9.0K
Citations:
3.3W

Organization

I
istituto per la microelettronica e microsistemi (imm-cnr)
Scholars:
1.6K
Papers: 1.1K
Citations: 1
U
University of Naples Federico II
Scholars:
4.7W
Papers: 3.6W
Citations: 51