Cited Article: Hanasaki I. Flow structure of water in carbon nanotubes: Poiseuille type or plug-like?
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Title:
Molecular dynamics of a water jet from a carbon nanotube
Authors:
Hanasaki, I; Yonebayashi, T; Kawano, S
Author Full Names:
Hanasaki, Itsuo; Yonebayashi, Toru; Kawano, Satoyuki
Source:
PHYSICAL REVIEW E 79 (4): Art. No. 046307 Part 2 APR 2009
Language:
English
Document Type:
Article
Author Keywords:
carbon nanotubes; flow simulation; jets; molecular dynamics method; nanofluidics; nozzles; pipe flow; water
KeyWords Plus:
NANOJET; SIMULATIONS; CONDUCTION; CURVATURE; DROPLETS; DIAMETER; RUPTURE; MODEL; FLOW
Abstract:
A carbon nanotube (CNT) can be viewed as a molecular nozzle. It has a cylindrical shape of atomistic regularity, and the diameter can be even less than 1 nm. We have conducted molecular-dynamics simulations of water jet from a (6,6) CNT that confines water in a form of single-file molecular chain. The results show that the water forms nanoscale clusters at the outlet and they are released intermittently. The jet breakup is dominated by the thermal fluctuations, which leads to the strong dependence on the temperature. The cluster size n decreases and the release frequency f increases at higher temperatures. The f roughly follows the reaction kinetics by the transition state theory. The speed of a cluster is proportional to the 1/root n because of the central limit theorem. These properties make great contrast with the macroscopic liquid jets.
Reprint Address:
Hanasaki, I, Osaka Univ, Grad Sch Engn Sci, Dept Mech Sci & Bioengn, Machikaneyama Cho 1-3, Osaka 5608531, Japan.
Research Institution addresses:
[Hanasaki, Itsuo; Yonebayashi, Toru; Kawano, Satoyuki] Osaka Univ, Grad Sch Engn Sci, Dept Mech Sci & Bioengn, Osaka 5608531, Japan
E-mail Address:
hanasaki@me.es.osaka-u.ac.jp; kawano@me.es.osaka-u.ac.jp
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Cited Reference Count:
40
Times Cited:
0
Publisher:
AMER PHYSICAL SOC; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Subject Category:
Physics, Fluids & Plasmas; Physics, Mathematical
ISSN:
1539-3755
DOI:
10.1103/PhysRevE.79.046307
IDS Number:
443WL
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