Electric double layer effect in a nano-scale SiO2sacrificial layer etching process and its application in nanowire fabrication

2010 ◽  
Vol 20 (10) ◽  
pp. 105021 ◽  
Author(s):  
Yibin Gong ◽  
Pengfei Dai ◽  
Anran Gao ◽  
Tie Li ◽  
Ping Zhou ◽  
...  
Author(s):  
Sedat Tardu

The effect of the electric double layer (EDL) on the linear stability of Poiseuille planar channel flow is reported. It is shown that the EDL destabilises the linear modes, and that the critical Reynolds number decreases significantly when the thickness of the double layer becomes comparable with the height of the channel. The planar macro scale Poiseuille flow is metastable, and the inflexional EDL instability may further decrease the macro-transitional Reynolds number. There is a good correspondence between the estimated transitional Reynolds numbers and some experiments, showing that early transition is plausible in microchannels under some conditions.


2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Takashi Tsuchiya ◽  
Makoto Takayanagi ◽  
Kazutaka Mitsuishi ◽  
Masataka Imura ◽  
Shigenori Ueda ◽  
...  

AbstractThe electric double layer (EDL) effect at solid electrolyte/electrode interfaces has been a key topic in many energy and nanoelectronics applications (e.g., all-solid-state Li+ batteries and memristors). However, its characterization remains difficult in comparison with liquid electrolytes. Herein, we use a novel method to show that the EDL effect, and its suppression at solid electrolyte/electronic material interfaces, can be characterized on the basis of the electric conduction characteristics of hydrogenated diamond(H-diamond)-based EDL transistors (EDLTs). Whereas H-diamond-based EDLT with a Li-Si-Zr-O Li+ solid electrolyte showed EDL-induced hole density modulation over a range of up to three orders of magnitude, EDLT with a Li-La-Ti-O (LLTO) Li+ solid electrolyte showed negligible enhancement, which indicates strong suppression of the EDL effect. Such suppression is attributed to charge neutralization in the LLTO, which is due to variation in the valence state of the Ti ions present. The method described is useful for quantitatively evaluating the EDL effect in various solid electrolytes.


2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Jinsung Chun ◽  
Byeong Uk Ye ◽  
Jae Won Lee ◽  
Dukhyun Choi ◽  
Chong-Yun Kang ◽  
...  

Author(s):  
Hiroshige Kumamaru ◽  
Hikari Kobayashi ◽  
Kazuhiro Itoh ◽  
Yuji Shimogonya

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.


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