PMID- 24758738
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20150415
LR  - 20140520
IS  - 1520-5827 (Electronic)
IS  - 0743-7463 (Linking)
VI  - 30
IP  - 19
DP  - 2014 May 20
TI  - From bipolar to quadrupolar electrode structures: an application of bond-detach 
      lithography for dielectrophoretic particle assembly.
PG  - 5686-93
LID - 10.1021/la5005193 [doi]
AB  - We describe a new, simple process for fabricating transparent quadrupolar 
      electrode arrays enabling large-scale particle assembly by means of 
      dielectrophoresis. In the first step, interdigitated electrode arrays are made by 
      chemical wet etching of indium tin oxide (ITO). Then, the transition from a 
      bipolar to a quadrupolar electrode arrangement is obtained by covering the 
      electrode surface with a thin poly(dimethylsiloxane) (PDMS) film acting as an 
      electrical insulation layer in which selective openings are formed using 
      bond-detach lithography. The PDMS insulating layer thickness was optimized and 
      controlled by adjusting experimental parameters such as the PDMS viscosity 
      (modulated by the addition of heptane) and the PDMS spin-coating velocity. The 
      insulating character of the PDMS membrane was successfully demonstrated by 
      performing a dielectrophoretic assembly of polystyrene particles using 
      interdigitated electrodes with and without a PDMS layer. The results show that 
      the patterned PDMS film functions properly as an electrical insulation layer and 
      allows the reconfiguration of the electric field cartography. Electric field 
      simulations were performed in both configurations to predict the 
      dielectrophoretic behavior of the particles. The simulation results are in 
      perfect agreement with experiments, in which we demonstrated the formation of 
      concentrated clusters of polystyrene particles and living cells of regular size 
      and shape.
FAU - Menad, Samia
AU  - Menad S
AD  - Universite de Lyon , Ecole Centrale de Lyon, CNRS, UMR 5005, Laboratoire Ampere, 
      Ecully, F-69130, France.
FAU - El-Gaddar, Amal
AU  - El-Gaddar A
FAU - Haddour, Naoufel
AU  - Haddour N
FAU - Toru, Sylvain
AU  - Toru S
FAU - Brun, Mathieu
AU  - Brun M
FAU - Buret, Francois
AU  - Buret F
FAU - Frenea-Robin, Marie
AU  - Frenea-Robin M
LA  - eng
PT  - Journal Article
DEP - 20140505
PL  - United States
TA  - Langmuir
JT  - Langmuir : the ACS journal of surfaces and colloids
JID - 9882736
EDAT- 2014/04/25 06:00
MHDA- 2014/04/25 06:01
CRDT- 2014/04/25 06:00
PHST- 2014/04/25 06:00 [entrez]
PHST- 2014/04/25 06:00 [pubmed]
PHST- 2014/04/25 06:01 [medline]
AID - 10.1021/la5005193 [doi]
PST - ppublish
SO  - Langmuir. 2014 May 20;30(19):5686-93. doi: 10.1021/la5005193. Epub 2014 May 5.