Cited Article: Ghosh, S. Carbon nanotube flow sensors
Alert Expires: 22 OCT 2009
Number of Citing Articles: 2 new records this week (2 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
Metalized Nanotube Tips Improve Through Thickness Thermal Conductivity in Adhesive Joints
Authors:
Ganguli, S; Sihn, S; Roy, AK; Dai, LM; Qu, L
Author Full Names:
Ganguli, Sabyasachi; Sihn, Sangwook; Roy, Ajit K.; Dai, Liming; Qu, Liangti
Source:
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 9 (3): 1727-1733 MAR 2009
Language:
English
Document Type:
Proceedings Paper
Author Keywords:
Thermal Conductivity; Carbon Nanotubes; Interfaces
KeyWords Plus:
CARBON NANOTUBES; NANOFLUIDS; MANAGEMENT; FILMS
Abstract:
The through-thickness thermal conductivity in conventional adhesive joints (of similar to 0.3 W/m-K) fails to meet the thermal load transfer requirement in numerous applications to enable lean manufacturing and improve system reliability to thermal load. Carbon nanotubes are known to possess extremely high thermal conductivity along the longitudinal axis. According to molecular dynamics simulations, the value can be as high as 3500 W/m-K at room temperature for multi-walled carbon nanotubes (MWCNT). Meanwhile, the transverse thermal conductivity perpendicular to the longitudinal axis of the MWCNTs is known to be relatively low, approximately 10-15 W/m-K. Existing studies of mixing the MWCNTs in polymers for adhesive joints only achieved minimal enhancement in the thermal conductivity and failed to satisfy the thermal property requirement for the adhesive joints. In order to properly utilize the superior axial thermal conductivity of the MWCNTs, vertically aligned MWCNTs have!
been used in this study and incorporated in the adhesive joint configuration. Analytical parametric study was conducted to identify critical parameters that affect the overall thermal conductivity of the joint and to provide guidelines for the process development. The process development involved growing the vertically aligned MWCNTs on silicon wafers. The aligned nanotube array was partially infused with epoxy adhesive. Selective reactive ion etching of the epoxy revealed the nanotube tips. In order to reduce the impedance mismatch and phonon scattering at the interface between the nanotube tips and the adherends, gold was thermally evaporated on the nanotube tips. The measured thermal conductivity of the adhesive joint device incorporating the MWCNTs was 262 W/m-K, which is significantly larger compared to that of less than 1 W/m-K without the MWCNTs.
Reprint Address:
Ganguli, S, Univ Dayton, Res Inst, 300 Coll Pk, Dayton, OH 45469 USA.
Research Institution addresses:
[Ganguli, Sabyasachi; Sihn, Sangwook] Univ Dayton, Res Inst, Dayton, OH 45469 USA; [Roy, Ajit K.] AFRL RXBT, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 USA
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Cited Reference Count:
16
Times Cited:
0
Publisher:
AMER SCIENTIFIC PUBLISHERS; 25650 NORTH LEWIS WAY, STEVENSON RANCH, CA 91381-1439 USA
Subject Category:
Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
ISSN:
1533-4880
DOI:
10.1166/jnn.2009.387
IDS Number:
411MJ
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Title:
Water Transport through Multinanopores Membranes
Authors:
Zeng, L; Guo, HK; Zuo, GH; Wan, RZ; Fang, HP
Author Full Names:
Zeng Li; Guo Hong-Kai; Zuo Guang-Hong; Wan Rong-Zheng; Fang Hai-Ping
Source:
CHINESE PHYSICS LETTERS 26 (3): Art. No. 038701 MAR 2009
Language:
English
Document Type:
Article
KeyWords Plus:
WALLED CARBON NANOTUBES; MASS-TRANSPORT; LIQUID WATER; CHANNEL; PERMEATION; MICROFLUIDICS; DIFFUSION; MODEL; FLOW
Abstract:
We investigate the influence of correlation between water molecules transport through the neighbouring nanopores, whose centres are at a distance of only 6.2 angstrom, using the molecular dynamics simulations. Water molecule distribution in nanopore and average water flow are obtained. It is found that the average water molecule number and water flow are slightly different between a system made of the neighbouring nanopores and a system of a single pore. This indicates that transport of water chains in neighbouring pores do no show significant influence each other. These findings should be helpful in designing efficient artificial membrane made of nanopores and providing an insight into effects of the biological channel structure on the water permeation.
Reprint Address:
Wan, RZ, Chinese Acad Sci, Shanghai Inst Appl Phys, POB 800-204, Shanghai 201800, Peoples R China.
Research Institution addresses:
[Zeng Li; Wan Rong-Zheng; Fang Hai-Ping] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; [Zeng Li] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China; [Guo Hong-Kai] Shijiazhuang Railway Inst, Shijiazhuang 050043, Peoples R China; [Zuo Guang-Hong] Fudan Univ, Dept Phys, T Life Res Ctr, Shanghai 200433, Peoples R China; [Fang Hai-Ping] Chinese Acad Sci, TPCSF, Beijing 100049, Peoples R China
E-mail Address:
wanrongzheng@sinap.ac.cn
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Cited Reference Count:
33
Times Cited:
0
Publisher:
IOP PUBLISHING LTD; DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
Subject Category:
Physics, Multidisciplinary
ISSN:
0256-307X
IDS Number:
410TN
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