We performed a direct measurement of dielectrophoretic forces on particles immersed in a fluid, in a given electrode configuration which permits particle levitation. We show that the force on several neighboring particles is much larger than that acting on an isolated particle in the same field distribution. We discuss the consequences of the measurements on the use of dielectrophoresis for material separation.

1.
D. G.
Lahoz
 and
G.
Walker
,
J. Phys. D
8
,
1994
(
1975
).
Google Scholar
Crossref
Search ADS
 
2.
H. A.
Pohl
,
J. Appl. Phys.
22
,
869
(
1951
);
Google Scholar
Crossref
Search ADS
 
H. A.
Pohl
 and
C. E.
Plymale
,
J. Electrochem. Soc.
107
,
390
(
1960
).
Google Scholar
Crossref
Search ADS
 
3.
M. H.
Davis
,
Am. J. Phys.
37
,
26
(
1969
).
Google Scholar
Crossref
Search ADS
 
4.
P. W.
Dietz
,
J. Appl. Phys.
48
,
1036
(
1977
).
Google Scholar
Crossref
Search ADS
 
5.
T. B.
Jones
 and
G. W.
Bliss
,
J. Appl. Phys.
48
,
1412
(
1977
).
Google Scholar
Crossref
Search ADS
 
6.
I. J.
Lin
 and
L.
Benguigui
,
Powder Technol.
17
,
95
(
1977
).
Google Scholar
Crossref
Search ADS
 
7.
L. D. Landau and E. M. Lifshitz, Electrodynamics of Continuous Media (Pergamon, London, 1960).
8.
C. Bottcher, Theory of Electrical Polarization (Elsevier, Amsterdam, 1952), p. 417.
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© 1978 American Institute of Physics.
1978
American Institute of Physics
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