Cited Article: Hummer, G. Water conduction through the hydrophobic channel of a carbon nanotube
Alert Expires: 22 OCT 2009
Number of Citing Articles: 3 new records this week (3 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
NONLINEAR VIBRATION CHARACTERISTICS OF FLUID-FILLED DOUBLE-WALLED CARBON NANOTUBES
Authors:
Yan, Y; Wang, WQ; Zhang, LX
Author Full Names:
Yan, Y.; Wang, W. Q.; Zhang, L. X.
Source:
MODERN PHYSICS LETTERS B 23 (22): 2625-2636 AUG 2009
Language:
English
Document Type:
Article
Author Keywords:
Nonlinear vibration; amplitude-frequency curve; fluid-filled double-walled carbon nanotubes; Donnell's cylindrical shell model
KeyWords Plus:
CYLINDRICAL-SHELLS; ELASTIC MEDIUM; FLOW; PREDICTION; PRESSURE; DYNAMICS; MODEL; SCALE; TUBES
Abstract:
Nonlinear vibration behaviors of double-walled carbon nanotubes (DWCNTs) with fluid inside the inner tube are investigated based on Donnell's cylindrical shell model and the more refined van der Waals (vdW) interaction formula. The Galerkin method and harmonic balance method are used to study the issue. The results obtained show that the radial vibrational modes of simply supported DWCNTs have twice the dynamical mode transitions as the frequency increases. The transitions correspond to twice the noncoaxial vibrations which play a critical role in electronic and transport properties of CNTs. Moreover, comparisons of the dynamical behaviors of fluid-filled DWCNTs with different wave numbers, radii and aspect ratios demonstrate that the amplitude-frequency curve topological forms are identical. Meanwhile, it is also concluded that the existence of fluid is significant for the value of amplitude ratio corresponding to noncoaxial vibration whereas it does not change the nonlinea!
r vibrating topological pattern of amplitude-frequency curves.
Reprint Address:
Yan, Y, Kunming Univ Sci & Technol, Dept Engn Mech, Kunming 650051, Yunnan, Peoples R China.
Research Institution addresses:
[Yan, Y.; Wang, W. Q.; Zhang, L. X.] Kunming Univ Sci & Technol, Dept Engn Mech, Kunming 650051, Yunnan, Peoples R China
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Cited Reference Count:
39
Times Cited:
0
Publisher:
WORLD SCIENTIFIC PUBL CO PTE LTD; 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
Subject Category:
Physics, Applied; Physics, Condensed Matter; Physics, Mathematical
ISSN:
0217-9849
DOI:
10.1142/S0217984909020746
IDS Number:
491PZ
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Title:
A reappraisal of the computational modelling of carbon nanotubes conveying viscous fluid
Authors:
Wang, L; Ni, Q
Author Full Names:
Wang, L.; Ni, Q.
Source:
MECHANICS RESEARCH COMMUNICATIONS 36 (7): 833-837 OCT 2009
Language:
English
Document Type:
Article
Author Keywords:
Carbon nanotube; Viscous fluid; Instability; Critical flow velocity
KeyWords Plus:
INSTABILITY; VIBRATION; FLOW; STORAGE; SCALE
Abstract:
By using the Euler-Bernoulli classical beam theory to model the nanotube as a continuum structure, a reevaluation of the computational modelling of carbon nanotubes conveying viscous fluid is undertaken in this paper, with some fresh insights as to if the viscosity of flowing fluid does influence the free vibration of the nanotube. It is found that during the flow of a fluid through a nanotube, modelled as a continuum beam, the effect of viscosity of flowing fluid on the vibration and instability of CNTs can be ignored. (C) 2009 Elsevier Ltd. All rights reserved.
Reprint Address:
Wang, L, Huazhong Univ Sci & Technol, Dept Mech, Wuhan 430074, Peoples R China.
Research Institution addresses:
[Wang, L.; Ni, Q.] Huazhong Univ Sci & Technol, Dept Mech, Wuhan 430074, Peoples R China
E-mail Address:
wanglinfliping@sohu.com
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Cited Reference Count:
27
Times Cited:
0
Publisher:
PERGAMON-ELSEVIER SCIENCE LTD; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Subject Category:
Mechanics
ISSN:
0093-6413
DOI:
10.1016/j.mechrescom.2009.05.003
IDS Number:
491OS
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Title:
General Anesthetic Binding to Neuronal alpha 4 beta 2 Nicotinic Acetylcholine Receptor and Its Effects on Global Dynamics
Authors:
Liu, LT; Willenbring, D; Xu, Y; Tang, P
Author Full Names:
Liu, Lu Tian; Willenbring, Dan; Xu, Yan; Tang, Pei
Source:
JOURNAL OF PHYSICAL CHEMISTRY B 113 (37): 12581-12589 SEP 17 2009
Language:
English
Document Type:
Article
KeyWords Plus:
GATED ION-CHANNEL; GAUSSIAN NETWORK MODEL; X-RAY-STRUCTURE; MOLECULAR-DYNAMICS; TRANSMEMBRANE DOMAIN; FIREFLY LUCIFERASE; GATING MECHANISM; STRUCTURAL BASIS; OPEN-STATE; HALOTHANE
Abstract:
The neuronal alpha 4 beta 2 nicotinic acetylcholine receptor (nAChR) is a target for general anesthetics, Currently available experimental structural information is inadequate to understand where anesthetics bind and how they modulate the receptor motions essential to function. Using our published open-channel structure model of alpha 4 beta 2 nAChR, we identified and evaluated six amphiphilic interaction sites for the volatile anesthetic halothane via flexible ligand docking and subsequent 20-ns molecular dynamics simulations. Halothane binding energies ranged from -6.8 to -2.4 kcal/mol. The primary binding sites were located at the interface of extracellular and transmembrane domains, where halothane perturbed conformations of, and widened the gap among, the Cys loop, the beta 1-beta 2 loop, and the TM2-TM3 linker. The halothane with the highest binding affinity at the interface between the alpha 4 and beta 2 subunits altered interactions between the protein and nearby lip!
ids by competing for hydrogen bonds. Gaussian network model analyses of the alpha 4 beta 2 nAChR structures at the end of 20-ns simulations in the absence of presence of halothane revealed profound changes in protein residue mobility. The concerted motions critical to protein function were also perturbed considerably. Halothane's effect oil protein dynamics was not confined to the residues adjacent to the binding sites, indicating all action on a more global scale.
Reprint Address:
Tang, P, Univ Pittsburgh, Dept Anesthesiol, Sch Med, 2049 Biomed Sci Tower 3,3501 5th Ave, Pittsburgh, PA 15261 USA.
Research Institution addresses:
[Liu, Lu Tian; Willenbring, Dan; Xu, Yan; Tang, Pei] Univ Pittsburgh, Dept Anesthesiol, Sch Med, Pittsburgh, PA 15261 USA; [Xu, Yan; Tang, Pei] Univ Pittsburgh, Dept Pharmacol & Chem Biol, Sch Med, Pittsburgh, PA 15261 USA; [Xu, Yan] Univ Pittsburgh, Dept Biol Struct, Sch Med, Pittsburgh, PA 15261 USA; [Tang, Pei] Univ Pittsburgh, Dept Computat Biol, Sch Med, Pittsburgh, PA 15261 USA
E-mail Address:
TangP@anes.upmc.edu
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Cited Reference Count:
68
Times Cited:
0
Publisher:
AMER CHEMICAL SOC; 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Subject Category:
Chemistry, Physical
ISSN:
1520-6106
DOI:
10.1021/jp9039513
IDS Number:
492KW
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