Cited Article: Majumder M. Nanoscale hydrodynamics - Enhanced flow in carbon nanotubes
Alert Expires: 09 NOV 2010
Number of Citing Articles: 3 new records this week (3 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
Assessment of nanotube structures under a moving nanoparticle using nonlocal beam theories
Authors:
Kiani, K; Mehri, B
Author Full Names:
Kiani, Keivan; Mehri, Bahman
Source:
JOURNAL OF SOUND AND VIBRATION 329 (11): 2241-2264 MAY 24 2010
Language:
English
Document Type:
Article
KeyWords Plus:
WALLED CARBON NANOTUBES; WAVE-PROPAGATION; CONTINUUM-MECHANICS; MOLECULAR MOTOR; ELASTIC MEDIUM; DRIVEN; MASS; VIBRATION; SURFACE; MODELS
Abstract:
Dynamic analysis of nanotube structures under excitation of a moving nanoparticle is carried out using nonlocal continuum theory of Eringen. To this end, the nanotube structure is modeled by an equivalent continuum structure (ECS) according to the nonlocal Euler-Bernoulli, Timoshenko and higher order beam theories. The non-dimensional equations of motion of the nonlocal beams acted upon by a moving nanoparticle are then established. Analytical solutions of the problem are presented for simply supported boundary conditions. The explicit expressions of the critical velocities of the nonlocal beams are derived. Furthermore, the capabilities of various nonlocal beam models in predicting the dynamic deflection of the ECS are examined through various numerical simulations. The role of the scale effect parameter, the slenderness ratio of the ECS and velocity of the moving nanoparticle on the time history of deflection as well as the dynamic amplitude factor of the nonlocal beams ar!
e scrutinized in some detail. The results show the importance of using nonlocal shear deformable beam theories, particularly for very stocky nanotube structures acted upon by a moving nanoparticle with low velocity. (C) 2010 Elsevier Ltd. All rights reserved.
Reprint Address:
Kiani, K, Sharif Univ Technol, Dept Civil Engn, Azadi Ave,POB 11365-9313, Tehran, Iran.
Research Institution addresses:
[Kiani, Keivan] Sharif Univ Technol, Dept Civil Engn, Tehran, Iran; [Mehri, Bahman] Sharif Univ Technol, Dept Math Sci, Tehran, Iran
E-mail Address:
k_kiani@civil.sharif.edu; mehri@sharif.edu
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Cited Reference Count:
43
Times Cited:
0
Publisher:
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD; 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
Subject Category:
Acoustics; Engineering, Mechanical; Mechanics
ISSN:
0022-460X
DOI:
10.1016/j.jsv.2009.12.017
IDS Number:
569FR
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Title:
A continuum approach to reproduce molecular-scale slip behaviour
Authors:
Hsu, HY; Patankar, NA
Author Full Names:
Hsu, H. -Y.; Patankar, N. A.
Source:
JOURNAL OF FLUID MECHANICS 645: 59-80 FEB 25 2010
Language:
English
Document Type:
Article
KeyWords Plus:
CARBON NANOTUBES; INHOMOGENEOUS FLUIDS; BOUNDARY-CONDITION; KINETIC-THEORY; FLOW; SURFACES; LIQUID; ROUGH; SIMULATIONS; INTERFACES
Abstract:
In this work we explore if it is possible to reproduce molecular-scale slip behaviour by using continuum equations. To that end it is noted that molecular-scale slip is affected by three factors: (1) near the wall, the fluid experiences a potential because of the wall; (ii) the fluid density responds to that potential, and hence, fluid compressibility is relevant; and (iii) the fluid call lose momentum to the wall. To incorporate these features we simulate shear flow of a compressible fluid between two walls in the presence of a potential. Compressibility effect is found to be important only in the near-wall region. The slip length is calculated from the mean velocity profile. The slip-length h-versus-shear-rate trend is similar to that in molecular dynamic calculations. First, there is a constant value of the slip length at low shear rates. Then, the slip length increases beyond a critical shear rate. Lastly, the slip length reaches another constant value if the wall moment!
um loss parameter is non-zero. The scaling for the critical shear rate emerges from our results. The value of the slip length increases if the wall potential is less corrugated and if the momentum loss to the wall is low. All understanding of the overall force balance during various slip modes emerges from the governing equations.
Reprint Address:
Patankar, NA, Northwestern Univ, Dept Mech Engn, 2145 Sheridan Rd, Evanston, IL 60208 USA.
Research Institution addresses:
[Hsu, H. -Y.; Patankar, N. A.] Northwestern Univ, Dept Mech Engn, Evanston, IL 60208 USA
E-mail Address:
n-patankar@northwestern.edu
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Cited Reference Count:
35
Times Cited:
0
Publisher:
CAMBRIDGE UNIV PRESS; 32 AVENUE OF THE AMERICAS, NEW YORK, NY 10013-2473 USA
Subject Category:
Mechanics; Physics, Fluids & Plasmas
ISSN:
0022-1120
DOI:
10.1017/S0022112009992540
IDS Number:
570LF
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Title:
Surface-Energy Generator of Single-Walled Carbon Nanotubes and Usage in a Self-Powered System
Authors:
Liu, Z; Zheng, KH; Hu, LJ; Liu, J; Qiu, CY; Zhou, HQ; Huang, HB; Yang, HF; Li, M; Gu, CZ; Xie, SS; Qiao, LJ; Sun, LF
Author Full Names:
Liu, Zheng; Zheng, Kaihong; Hu, Lijun; Liu, Ji; Qiu, Caiyu; Zhou, Haiqing; Huang, Haibo; Yang, Haifang; Li, Meng; Gu, Changzhi; Xie, Sishen; Qiao, Lijie; Sun, Lianfeng
Source:
ADVANCED MATERIALS 22 (9): 999-+ MAR 5 2010
Language:
English
Document Type:
Article
KeyWords Plus:
SILICON NANOWIRES; LIQUIDS; SCIENCE; DRIVEN; FLOW; HYDRODYNAMICS; PERFORMANCE; FILMS
Abstract:
A surface-energy generator (SEC) using single-walled carbon nanotubes is demonstrated to harvest the surface energy of ethanol. The SEC can drive thermistors in a self-powered system. The performance can be significantly enhanced by the Marangoni effect. These SEGs show the advantages of a smaller inner resistance, no moving parts, and no need for the application of an obvious external force.
Reprint Address:
Sun, LF, Natl Ctr Nanosci & Technol, 8 Zhongguancun 1st N St, Beijing 100190, Peoples R China.
Research Institution addresses:
[Liu, Zheng; Zheng, Kaihong; Hu, Lijun; Liu, Ji; Qiu, Caiyu; Zhou, Haiqing; Huang, Haibo; Sun, Lianfeng] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China; [Yang, Haifang; Gu, Changzhi; Xie, Sishen] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China; [Li, Meng; Qiao, Lijie] Univ Sci & Technol Beijing, Ctr Corros & Protect, Key Lab Environm Fracture MOE, Beijing 100083, Peoples R China; [Liu, Zheng; Zheng, Kaihong; Hu, Lijun; Liu, Ji; Qiu, Caiyu; Zhou, Haiqing; Huang, Haibo] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
E-mail Address:
slf@nanoctr.cn
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Cited Reference Count:
30
Times Cited:
0
Publisher:
WILEY-V C H VERLAG GMBH; PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
Subject Category:
Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
ISSN:
0935-9648
DOI:
10.1002/adma.200902153
IDS Number:
570LM
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