TY - JOUR
T1 - Droplet creation using liquid dielectrophoresis
AU - Chen, Chun Hong
AU - Tsai, Sung Lin
AU - Jang, Ling Sheng
N1 - Funding Information:
This study was financially supported by the National Science Council (NSC 97-2221-E-006-247 ) and made use of shared facilities provided under the Program of Top 100 Universities Advancement funded by the Ministry of Education in Taiwan. The authors would like to thank the Center for Micro/Nano-Science and Technology at National Cheng Kung University for access granted to major equipment throughout the duration of this study and for their general technical support.
PY - 2009/10/12
Y1 - 2009/10/12
N2 - Dielectrophoresis (DEP) is defined as polarizable particles moving into regions of higher electric field intensity. In liquid DEP (LDEP), a dielectric liquid tends to flow toward regions of high electric field intensity under a non-uniform electric field. This work presents a theoretical model of LDEP based on parallel electrodes. The LDEP force is derived using the lump parameter electromechanical method. The relationship between the minimum actuation voltage and the electrode width is investigated experimentally and theoretically. We also propose a method for creating a 20 nl droplet of deionized water using LDEP. The creation of a water droplet containing 15 μm polystyrene beads is placed at the desired location from a continuous flow driven by LDEP using the developed method.
AB - Dielectrophoresis (DEP) is defined as polarizable particles moving into regions of higher electric field intensity. In liquid DEP (LDEP), a dielectric liquid tends to flow toward regions of high electric field intensity under a non-uniform electric field. This work presents a theoretical model of LDEP based on parallel electrodes. The LDEP force is derived using the lump parameter electromechanical method. The relationship between the minimum actuation voltage and the electrode width is investigated experimentally and theoretically. We also propose a method for creating a 20 nl droplet of deionized water using LDEP. The creation of a water droplet containing 15 μm polystyrene beads is placed at the desired location from a continuous flow driven by LDEP using the developed method.
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U2 - 10.1016/j.snb.2009.08.001
DO - 10.1016/j.snb.2009.08.001
M3 - Article
AN - SCOPUS:70349244633
SN - 0925-4005
VL - 142
SP - 369
EP - 376
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
IS - 1
ER -