Cited Article: Majumder M. Nanoscale hydrodynamics - Enhanced flow in carbon nanotubes
Alert Expires: 18 OCT 2009
Number of Citing Articles: 3 new records this week (3 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
Analysis of the vibration characteristics of fluid-conveying double-walled carbon nanotubes
Authors:
Natsuki, T; Ni, QQ; Endo, M
Author Full Names:
Natsuki, Toshiaki; Ni, Qing-Qing; Endo, Morinobu
Source:
JOURNAL OF APPLIED PHYSICS 105 (9): Art. No. 094328 MAY 1 2009
Language:
English
Document Type:
Article
KeyWords Plus:
WAVE PROPAGATION; WATER; FIBER; MODEL
Abstract:
Vibration characteristics of double-walled carbon nanotubes (DWCNTs) with conveying fluid are analyzed based on the Euler-Bernoulli beam theory and using the wave propagation approach. The DWCNTs are considered as two nanotube shells coupled through the van der Waals interaction between them. The influences of internal moving fluids, such as flow velocity and mass density of fluids, on the vibration frequency of DWCNTs and the DWCNTs embedded in an elastic matrix are investigated in detail. The effect of matrix surrounding carbon nanotubes is considered as a spring element defined by the Winkler model. In this paper, we consider the double-walled nanotubes with an inner diameter of 2.2 nm and an outer diameter of 3.0 nm. According to this analysis, the numerical results indicate that the vibration frequency for the first mode (mode 1) reduces to zero at a critical flow velocity in the case of higher flow velocity, which coincides with the previous study based on a single bea!
m model. The critical flow velocity is largely affected by the fluid properties and the vibration modes. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3117511]
Reprint Address:
Natsuki, T, Shinshu Univ, Fac Text Sci & Technol, 3-15-1 Tokida, Ueda, Nagano 3868567, Japan.
Research Institution addresses:
[Natsuki, Toshiaki; Ni, Qing-Qing] Shinshu Univ, Fac Text Sci & Technol, Ueda, Nagano 3868567, Japan; [Endo, Morinobu] Shinshu Univ, Fac Engn, Nagano 3808553, Japan
E-mail Address:
natsuki@shinshu-u.ac.jp
Cited References:
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Cited Reference Count:
31
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, Applied
ISSN:
0021-8979
DOI:
10.1063/1.3117511
IDS Number:
448LE
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Title:
Gating of Water Flow Induced by Bending of a Carbon Nanotube
Authors:
Wang, S; Lu, HJ; Tu, YS; Wang, CL; Fang, HP
Author Full Names:
Wang Shen; Lu Hang-Jun; Tu Yu-Song; Wang Chun-Lei; Fang Hai-Ping
Source:
CHINESE PHYSICS LETTERS 26 (6): Art. No. 068702 JUN 2009
Language:
English
Document Type:
Article
KeyWords Plus:
BIOLOGICAL CHANNELS; PERMEATION; CONDUCTION; TRANSPORT; DYNAMICS; PIPES
Abstract:
The ON-OFF state transition of the water transport induced by the structural bending of a carbon nanotube is studied by molecule dynamics simulation. The water permeation through a bent carbon nanotube shows excellent gating property with a threshold bending angle of about 14.6 degrees. We also investigate the water density distribution inside the nanochannel to illustrate the mechanism.
Reprint Address:
Fang, HP, Chinese Acad Sci, Shanghai Inst Appl Phys, POB 800-204, Shanghai 201800, Peoples R China.
Research Institution addresses:
[Wang Shen; Tu Yu-Song; Wang Chun-Lei; Fang Hai-Ping] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; [Wang Shen; Tu Yu-Song; Wang Chun-Lei] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China; [Lu Hang-Jun] Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Peoples R China; [Fang Hai-Ping] Chinese Acad Sci, TPCSF, Beijing 100049, Peoples R China
E-mail Address:
fanghaiping@sinap.ac.cn
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Cited Reference Count:
24
Times Cited:
0
Publisher:
IOP PUBLISHING LTD; DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
Subject Category:
Physics, Multidisciplinary
ISSN:
0256-307X
IDS Number:
452OA
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Title:
INVESTIGATION OF TEMPERATURE DRIVEN GAS FLOWS IN 4 NM CHANNELS FOR APPLICATIONS OF MICRO-SCALE COMPRESSORS AT ABOVE ATMOSPHERIC PRESSURE
Authors:
Han, YL; Muntz, EP
Author Full Names:
Han, Yen-Lin; Muntz, E. P.
Source:
PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, VOL 13, PTS A AND B : 661-668 2009
Language:
English
Document Type:
Proceedings Paper
KeyWords Plus:
LINEARIZED BOLTZMANN-EQUATION; WALL CARBON NANOTUBES; MOLECULAR-TRANSPORT; KNUDSEN COMPRESSOR; MEMBRANES; PERFORMANCE
Abstract:
Based on the rarefied flow phenomenon of thermal creep (or thermal transpiration), the Knudsen Compressor is an unconventional micro/meso-scale compressor or pump. Optimization studies have shown that a Knudsen Compressor operates most efficiently when its membrane's flow channels are at the transitional flow regime, between continuum and molecular flows; simultaneously it provides a desired mass flow and pressure ratio. At higher pressures (> 1 atm), to maintain membrane channel Knudsen numbers in the transitional regime (Kn similar to 1), the corresponding membrane channel size needs to be less than about 50 nm. More specifically, at 10 atm, the membrane channel size should be as small as 5 rim to provide the most efficient Knudsen Compressor operation.
Prior to this work, there has been no documented experimental investigation of thermal creep measurements through channels less than 5 nm. Phenomena that could be associated with such flows are briefly discussed, and possible selection criteria for thermal creep membranes are included in this study. Apparatus design is discussed. Experimental results are provided for thermal creep flows, within a single stage Knudsen Compressor with 4 nm diameter membrane channels. The maximum pressure increases across the Knudsen Compressor's thermal creep membrane were measured, over a range of operating pressures from I atm to 1.1 atm with Helium or Argon as the working gas. Results showed apparent thermal creep effects across the porous glass membrane, and possibly significant force field effects within the nano-scale channels.
Reprint Address:
Han, YL, Univ So Calif, Los Angeles, CA 90089 USA.
Research Institution addresses:
[Han, Yen-Lin; Muntz, E. P.] Univ So Calif, Los Angeles, CA 90089 USA
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Cited Reference Count:
36
Times Cited:
0
Publisher:
AMER SOC MECHANICAL ENGINEERS; THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
IDS Number:
BJJ80
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