Cited Article: Hummer, G. Water conduction through the hydrophobic channel of a carbon nanotube
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Number of Citing Articles: 2 new records this week (2 in this e-mail)
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Title:
A mechanical model for single-file transport of water through carbon nanotube membranes
Authors:
Chan, Y; Hill, JM
Author Full Names:
Chan, Yue; Hill, James M.
Source:
JOURNAL OF MEMBRANE SCIENCE 372 (1-2): 57-65 APR 15 2011
Language:
English
Document Type:
Article
Author Keywords:
Single-file transport; Continuous approximation; Classical phonon theory; Carbon nanotube; Water molecules
KeyWords Plus:
DIFFUSION; CHANNEL; FULLERENES; ATOMS; IONS; BEHAVIOR; FLOW
Abstract:
Carbon nanotubes can be embedded into a polymer matrix to manufacture nanotube membranes generating rapid water transport. In particular, for nanotubes of small radii, the single-file transport of water diffusing rapidly and concertedly through densely filled carbon nanotubes has been reported. In this paper, we provide an additional methodology to investigate such problems by employing both applied mathematical modelling and classical phonon theory. Our approach has the merit of giving rise to rapid computational times in comparison to the molecular dynamics simulations approach. The total energy of a water molecule inside a carbon nanotube can be determined analytically using point-point interactions and the continuous approximation. In addition, we may use classical phonon theory for the collective motion of water molecules inside the nanotube to formulate the basic equations of motion for water diffusing through a carbon nanotube. Upon making a 'sufficiently long' hypoth!
esis, the average water flow time can be deduced analytically. Furthermore, we incorporate external forces at the tube ends and show that water is virtually incompressible for external forces up to 3 pN. We also determine the variation of the water flow time under random fluctuations in the presence of the external forces and find that the random effect diminishes as the external force increases. This outcome could open up a precise engineering approach for using such nanotube membranes in numerous applications. (C) 2011 Elsevier B.V. All rights reserved.
Reprint Address:
Chan, Y, Univ Adelaide, Nanomech Grp, Sch Math Sci, Adelaide, SA 5005, Australia.
Research Institution addresses:
[Chan, Yue; Hill, James M.] Univ Adelaide, Nanomech Grp, Sch Math Sci, Adelaide, SA 5005, Australia
E-mail Address:
yue.chan@adelaide.edu.au
Cited References:
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Cited Reference Count:
43
Times Cited:
0
Publisher:
ELSEVIER SCIENCE BV; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Subject Category:
Engineering, Chemical; Polymer Science
ISSN:
0376-7388
DOI:
10.1016/j.memsci.2011.01.040
IDS Number:
754CI
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Title:
Phase transition of nanotube-confined water driven by electric field
Authors:
Fu, ZM; Luo, Y; Ma, JP; Wei, GH
Author Full Names:
Fu, Zhaoming; Luo, Yin; Ma, Jianpeng; Wei, Guanghong
Source:
JOURNAL OF CHEMICAL PHYSICS 134 (15): Art. No. 154507 APR 21 2011
Language:
English
Document Type:
Article
KeyWords Plus:
WALLED CARBON NANOTUBES; ICE-NANOTUBES; TRANSPORT-PROPERTIES; CHANNEL; DYNAMICS; NMR
Abstract:
The effects of electric field on the phase behaviors of water encapsulated in a thick single-walled carbon nanotube (SWCNT) (diameter = 1.2 nm) have been studied by performing extensive molecular dynamics simulations at atmospheric pressure. We found that liquid water can freeze continuously into either pentagonal or helical solidlike ice nanotube in SWCNT, depending on the strengths of the external electric field applied along the tube axis. Remarkably, the helical one is new ice phase which was not observed previously in the same size of SWCNT in the absence of electric field. Furthermore, a discontinuous solid-solid phase transition is observed between pentagonal and helical ice nanotubes as the strengths of the external electric field changes. The mechanism of electric-field-induced phase transition is discussed. The dependence of ice structures on the chiralities of SWCNTs is also investigated. Finally, we present a phase diagram of confined water in the electric field-!
temperature plane. (C) 2011 American Institute of Physics. [doi:10.1063/1.3579482]
Reprint Address:
Wei, GH, Fudan Univ, State Key Lab Surface Phys, Key Lab Computat Phys Sci, Minist Educ, Shanghai 200433, Peoples R China.
Research Institution addresses:
[Fu, Zhaoming; Luo, Yin; Wei, Guanghong] Fudan Univ, State Key Lab Surface Phys, Key Lab Computat Phys Sci, Minist Educ, Shanghai 200433, Peoples R China; [Fu, Zhaoming; Luo, Yin; Wei, Guanghong] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China; [Ma, Jianpeng] Rice Univ, Verna & Marrs McLean Dept Biochem & Mol Biol, Baylor Coll Med, Houston, TX USA; [Ma, Jianpeng] Rice Univ, Dept Bioengn, Houston, TX USA
E-mail Address:
ghwei@fudan.edu.cn
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Cited Reference Count:
32
Times Cited:
0
Publisher:
AMER INST PHYSICS; CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
Subject Category:
Physics, Atomic, Molecular & Chemical
ISSN:
0021-9606
DOI:
10.1063/1.3579482
IDS Number:
754FM
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