T0501-1-6 Numerical Analyses on Electric Double Layer and Electroosmotic Flow in Nano-Scale Parallel Plates

2010 ◽  
Vol 2010.8 (0) ◽  
pp. 79-80
Author(s):  
Hiroshige KUMAMARU ◽  
Hikari KOBAYASHI ◽  
Kazuhiro ITOH ◽  
Yuji SHIMOGONYA
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Electroosmotic Flow ◽  
Numerical Analyses ◽  
Parallel Plates ◽  
Nano Scale

Numerical Analyses on Electric Double Layer and Electroosmotic Flow in Nano-Scale Parallel Plates

2011 ◽  
Author(s):  
Hiroshige Kumamaru ◽  
Hikari Kobayashi ◽  
Kazuhiro Itoh ◽  
Yuji Shimogonya
Keyword(s):  
Molecular Dynamics ◽  
Double Layer ◽  
Electric Double Layer ◽  
Electroosmotic Flow ◽  
Channel Width ◽  
Numerical Analyses ◽  
Wall Surface ◽  
Parallel Plates ◽  
Nano Scale ◽  
The Finite Difference Method

Numerical analyses, both molecular dynamics (MD) analyses and continuous fluid analyses (by the finite difference method), have been performed on electric double layer and electroosmotic flow in nano-scale parallel plates. For a channel width of 8.2 nm, the MD analyses shows that the electric double layer covers whole channel while the continuous fluid analyses indicates that the electric double layer is formed only in the regions near the walls. For a channel width of 20.6 nm, both the MD analyses and the continuous fluid analyses show that the electric double layer appears only in the regions near the walls. It becomes obvious from the MD analyses that the thickness of electric double layer becomes large when the electric field is tilted from the direction of wall surface. By the continuous fluid analyses, the electroosmotic flow velocity is estimated to be 2.5 mm/s and 3.6 mm/s for channel widths of 8.2 nm and 20.6 nm, respectively.

Electroosmotic Flow in Tree-Shaped Microchannel Networks

2008 ◽  
Author(s):  
Christine Barrot ◽  
Ste´phane Colin
Keyword(s):  
Aspect Ratio ◽  
Electric Field ◽  
Analytical Model ◽  
Double Layer ◽  
High Aspect Ratio ◽  
Network Architecture ◽  
Electric Double Layer ◽  
Electroosmotic Flow ◽  
Optimal Value ◽  
Parallel Microchannels

An analytical model of electroosmotic flow in tree-shaped microchannel networks is developed. The aim of the study is to determine the best network architecture to maximize the electroosmotic flowrate for a given electric field and a given total microchannel volume. The network consists of rectangular microchannels with high aspect ratio. The paper shows under what conditions the tree structure offers a higher flowrate than a series of parallel microchannels. The influence of the electric double layer (EDL) thickness is pointed out. As long as the EDL thickness is negligible compared with the microchannel width, the tree-shaped architecture does not present any particular interest. But as soon as the EDL thickness is significant, it is shown that the flowrate can be largely enhanced by increasing the number of bifurcations in the tree-shaped network. Two configurations of bifurcations (V-shaped and U-shaped) are considered and compared. Each bifurcation is composed of a parent microchannel connected to two identical daughter microchannels. The optimal value of the daughter over parent microchannels widths is calculated. The influence of the daughter over parent microchannels lengths and of the number of bifurcations is pointed out. Guidelines for the design of tree-shaped microchannel networks are finally proposed.

1503 Study of electroosmotic flow and electric double layer based on measurement of interface current in doughnut channel

2009 ◽  
Vol 2009 (0) ◽  
pp. 467-468
Author(s):  
Dan ZHANG ◽  
Yoshihiro IWAMOTO ◽  
Daisuke HIRAMATSU ◽  
Osami KITOH ◽  
Tatuo USHIJIMA
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Electroosmotic Flow

Electrode for Electric Double Layer Capacitor Made of Carbonized and Activated Cotton Cloth

2014 ◽  
Vol 134 (5) ◽  
pp. 360-361
Author(s):  
Masumi Fukuma ◽  
Takayuki Uchida ◽  
Yukito Fukushima ◽  
Jinichi Ogawa ◽  
Katsumi Yoshino
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Cotton Cloth ◽  
Electric Double Layer Capacitor ◽  
Double Layer Capacitor
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