ISI Web of Knowledge Alert - Ghosh, S

ISI Web of Knowledge Citation Alert

Cited Article: Ghosh, S. Carbon nanotube flow sensors
Alert Expires: 09 NOV 2010
Number of Citing Articles: 2 new records this week (2 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
Integration of SWNT film into MEMS for a micro-thermoelectric device

Authors:
Van, TD; Dzung, VD; Yamada, T; Bui, TT; Hata, K; Sugiyama, S

Author Full Names:
Van Thanh Dau; Dzung Viet Dao; Yamada, Takeo; Bui Thanh Tung; Hata, Kenji; Sugiyama, Susumu

Source:
SMART MATERIALS & STRUCTURES 19 (7): Art. No. 075003 JUL 2010

Language:
English

Document Type:
Article

KeyWords Plus:
WALLED CARBON NANOTUBES; ONE-DIMENSIONAL NANOSTRUCTURES; POWER; TRANSPORT; STRENGTH

Abstract:
This paper reports the top-down fabrication of carbon nanotube (CNT) thin film on microelectrical mechanical systems (MEMS) and the characterization of the thermoelectric coefficients of aligned single-walled carbon nanotube (SWNT) forest film. The film was synthesized by water-assisted chemical vapor deposition (CVD), a process known as 'super-growth'. CNT film was then condensed, manually maneuvered, and conveniently patterned by electron beam (EB) lithography to form desirable shapes. We demonstrate this process by patterning an array of Au-CNT thermocouples; measurement under room temperature conditions reveals the Seebeck coefficient of aligned SWNT film to be 18-20 mu V C-1.

Reprint Address:
Van, TD, Sumitomo Chem Co Ltd, Agr Chem Res Lab, Res Grp Environm Hlth, 2-1 Takatsukasa 4 Chome, Takarazuka, Hyogo 6658555, Japan.

Research Institution addresses:
[Yamada, Takeo; Hata, Kenji] Natl Inst Adv Ind Sci & Technol, Nanotube Res Ctr, Tsukuba Ctr 5, Tsukuba, Ibaraki 3058565, Japan; [Van Thanh Dau; Dzung Viet Dao; Bui Thanh Tung; Sugiyama, Susumu] Ritsumeikan Univ, Grad Sch Sci & Engn, Shiga 5258577, Japan

E-mail Address:
van@fc.ritsumei.ac.jp

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Cited Reference Count:
39

Times Cited:
0

Publisher:
IOP PUBLISHING LTD; DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND

Subject Category:
Instruments & Instrumentation; Materials Science, Multidisciplinary

ISSN:
0964-1726

DOI:
10.1088/0964-1726/19/7/075003

IDS Number:
612UT

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Title:
Fullerene-based one-dimensional crystalline nanopolymer formed through topochemical transformation of the parent nanowire

Authors:
Geng, JF; Solov'yov, IA; Reid, DG; Skelton, P; Wheatley, AEH; Solov'yov, AV; Johnson, BFG

Author Full Names:
Geng, Junfeng; Solov'yov, Ilia A.; Reid, David G.; Skelton, Paul; Wheatley, Andrew E. H.; Solov'yov, Andrey V.; Johnson, Brian F. G.

Source:
PHYSICAL REVIEW B 81 (21): Art. No. 214114 JUN 17 2010

Language:
English

Document Type:
Article

KeyWords Plus:
INTERFACIAL PRECIPITATION METHOD; PRESSURE-POLYMERIZED C-60; CARBON NANOTUBES; STRUCTURAL-CHARACTERIZATION; BUCKMINSTERFULLERENE C-60; MAGNETIC-RESONANCE; CHEMICAL-SHIFTS; NMR; DENSITY; GROWTH

Abstract:
Large-scale practical applications of fullerene (C-60) in nanodevices could be significantly facilitated if the commercially available micrometer-scale raw C-60 powder were further processed into a one-dimensional nanowire-related polymer displaying covalent bonding as molecular interlinks and resembling traditional important conjugated polymers. However, there has been little study thus far in this area despite the abundant literature on fullerene. Here we report the preparation and characterization of such a C-60-based polymer nanowire, (-C60TMB-)(n), where TMB=1,2,4-trimethylbenzene, which displays a well-defined crystalline nanostructure, exceptionally large length-to-width ratio and excellent thermal stability. The material is prepared by first growing the corresponding nanowire through a solution phase of C-60 followed by a topochemical polymerization reaction in the solid state. Gas chromatography, mass spectrometry and C-13 nuclear magnetic resonance evidence is prov!
ided for the nature of the covalent bonding mode adopted by the polymeric chains. Theoretical analysis based on detailed calculations of the reaction energetics and structural analysis provides an in-depth understanding of the polymerization pathway. The nanopolymer promises important applications in biological fields and in the development of optical, electrical, and magnetic nanodevices.

Reprint Address:
Geng, JF, Univ Cambridge, Dept Chem, Lensfield Rd, Cambridge CB2 1EW, England.

Research Institution addresses:
[Geng, Junfeng; Reid, David G.; Skelton, Paul; Wheatley, Andrew E. H.; Johnson, Brian F. G.] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England; [Solov'yov, Ilia A.; Solov'yov, Andrey V.] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, D-60438 Frankfurt, Germany; [Solov'yov, Ilia A.; Solov'yov, Andrey V.] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

E-mail Address:
jg201@cam.ac.uk; ilia@fias.uni-frankfurt.de

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Cited Reference Count:
67

Times Cited:
0

Publisher:
AMER PHYSICAL SOC; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA

Subject Category:
Physics, Condensed Matter

ISSN:
1098-0121

DOI:
10.1103/PhysRevB.81.214114

IDS Number:
612CS

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ISI Web of Knowledge Alert - Hummer, G

ISI Web of Knowledge Citation Alert

Cited Article: Hummer, G. Water conduction through the hydrophobic channel of a carbon nanotube
Alert Expires: 09 NOV 2010
Number of Citing Articles: 2 new records this week (2 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
Gated Ion Transport through Dense Carbon Nanotube Membranes

Authors:
Yu, MA; Funke, HH; Falconer, JL; Noble, RD

Author Full Names:
Yu, Miao; Funke, Hans H.; Falconer, John L.; Noble, Richard D.

Source:
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 132 (24): 8285-8290 JUN 23 2010

Language:
English

Document Type:
Article

KeyWords Plus:
WATER-ADSORPTION; CHANNEL; SELECTIVITY; CONDUCTION

Abstract:
Gated ion diffusion is found widely in hydrophobic biological nanopores, upon changes in ligand binding, temperature, transmembrane voltage, and mechanical stress. Because water is the main media for ion diffusion in these hydrophobic biological pores, ion diffusion behavior through these nanochannels is expected to be influenced significantly when water wettability in hydrophobic biological nanopores is sensitive and changes upon small external changes. Here, we report for the first time that ion diffusion through highly hydrophobic nanopores (similar to 3 nm) showed a gated behavior due to change of water wettability on hydrophobic surface upon small temperature change or ultrasound. Dense carbon nanotube (CNT) membranes with both 3-nm CNTs and 3-nm interstitial pores were prepared by a solvent evaporation process and used as a model system to investigate ion diffusion behavior. Ion diffusion through these membranes exhibited a gated behavior. The ion flux was turned on an!
d off, apparently because the water wettability of CNTs changed. At 298 K, ion diffusion through dense CNT membranes stopped after a few hours, but it dramatically increased when the temperature was increased 20 K or the membrane was subjected to ultrasound. Likewise, water adsorption on dense CNT membranes increased dramatically at a water activity of 0.53 when the temperature increased from 293 to 306 K, indicating capillary condensation. Water adsorption isotherms of dense CNT membranes suggest that the adsorbed water forms a discontinuous phase at 293 K, but it probably forms a continuous layer, probably in the interstitial CNT regions, at higher temperatures. When the ion diffusion channel was opened by a temperature increase or ultrasound, ions diffused through the CNT membranes at a rate similar to bulk diffusion in water. This finding may have implications for using CNT membrane for desalination and water treatment.

Reprint Address:
Falconer, JL, Univ Colorado, Dept Chem & Biol Engn, Boulder, CO 80309 USA.

Research Institution addresses:
[Yu, Miao; Funke, Hans H.; Falconer, John L.; Noble, Richard D.] Univ Colorado, Dept Chem & Biol Engn, Boulder, CO 80309 USA

E-mail Address:
john.falconer@colorado.edu

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Cited Reference Count:
22

Times Cited:
0

Publisher:
AMER CHEMICAL SOC; 1155 16TH ST, NW, WASHINGTON, DC 20036 USA

Subject Category:
Chemistry, Multidisciplinary

ISSN:
0002-7863

DOI:
10.1021/ja9091769

IDS Number:
612NJ

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Title:
Role of Electrostatics in Modulating Hydrophobic Interactions and Barriers to Hydrophobic Assembly

Authors:
Bauer, BA; Patel, S

Author Full Names:
Bauer, Brad A.; Patel, Sandeep

Source:
JOURNAL OF PHYSICAL CHEMISTRY B 114 (24): 8107-8117 JUN 24 2010

Language:
English

Document Type:
Article

KeyWords Plus:
MOLECULAR-DYNAMICS SIMULATIONS; POLARIZABLE FORCE-FIELD; CLASSICAL DRUDE OSCILLATORS; MONTE-CARLO SIMULATIONS; LIQUID-VAPOR INTERFACE; HYDROGEN-BOND DYNAMICS; SCALED-PARTICLE THEORY; FREE-ENERGY; TEMPERATURE-DEPENDENCE; SOLVENT POLARIZABILITY

Abstract:
Hydrophobic effects continue to be an active area of research due to implications for a wide range of physicochemical phenomena. Molecular dynamics simulations have been used extensively in the study of such effects using various water potential models, with few studies addressing the differences between models. In particular, studies considering the explicit treatment of water polarizability are underrepresented in the literature. We present results from molecular dynamics simulations that systematically compare the dependence of large-scale hydrophobic effects on the water model. We consider three common nonpolarizable models (SPC/E, TIP3P, and TIP4P) and two common polarizable models (TIP4P-FQ and SWM4-NDP). Results highlight the similarities and differences of the different water models in the vicinity of two large hydrophobic plates. In particular, profiles of average density, density fluctuations, orientation, and hydrogen bonding show only minor differences among the !
water models studied. However, the potential of mean force for the hydrophobe dimerization is significantly reduced in the polarizable water systems. TIP4P-FQ shows the deepest minimum of approximately -54(+/-3) kcal/mol compared to -40(+/-3), -40(+/-2), -42(+/-3), and -45(+/-5) kcal/mol for TIP4P, TEMP, SPC/E, and SWM4-NDP (all relative to the dissociated state). We discuss the relationship between hydrophobic association and the strength of water-water interactions in the liquid phase. Results suggest that models treating polarizability (both implicitly and explicitly) influence a stronger driving force toward hydrophobic assembly. Implications of these results, as well as prospectives on future work, are discussed.

Reprint Address:
Patel, S, Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA.

Research Institution addresses:
[Bauer, Brad A.; Patel, Sandeep] Univ Delaware, Dept Chem & Biochem, Newark, DE 19716 USA

E-mail Address:
sapatel@udel.edu

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Cited Reference Count:
109

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/jp101995d

IDS Number:
611TM

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ISI Web of Knowledge Alert - Sokhan VP

ISI Web of Knowledge Citation Alert

Cited Article: Sokhan VP. Fluid flow in nanopores: Accurate boundary conditions for carbon nanotubes
Alert Expires: 09 NOV 2010
Number of Citing Articles: 1 new records this week (1 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
Dual diffusion mechanism of argon confined in single-walled carbon nanotube bundles

Authors:
Liu, YC; Moore, JD; Roussel, TJ; Gubbins, KE

Author Full Names:
Liu, Ying-Chun; Moore, Joshua D.; Roussel, Thomas J.; Gubbins, Keith E.

Source:
PHYSICAL CHEMISTRY CHEMICAL PHYSICS 12 (25): 6632-6640 2010

Language:
English

Document Type:
Article

KeyWords Plus:
MOLECULAR-DYNAMICS SIMULATIONS; TRANSPORT DIFFUSION; FILE DIFFUSION; SILICA; DIFFUSIVITIES; ADSORPTION; CATALYSIS; ALPO4-5; DEVICES; STORAGE

Abstract:
The adsorption and diffusion mechanisms of argon at 120 K were examined in a (25,0) single-walled carbon nanotube (SWCNT) bundle using a combination of Grand Canonical Monte Carlo and microcanonical molecular dynamics simulations. Interstices between the SWCNTs provided the most energetically favorable adsorption sites and filled completely at low relative pressure, followed by adsorption in the SWCNTs. We calculated the self-diffusivities from the average mean squared displacements of argon molecules. In both flexible and rigid bundles, we observed a bimodal diffusion mechanism, with single-file diffusion occurring in the interstitial sites and Fickian diffusion in the SWCNTs. Strong system size effects were observed in our simulations. The largest system sizes showed very little influence of the nanotube flexibility on the diffusion of argon even at the lowest pressures studied.

Reprint Address:
Gubbins, KE, N Carolina State Univ, Inst Computat Sci & Engn, Raleigh, NC 27695 USA.

Research Institution addresses:
[Liu, Ying-Chun; Moore, Joshua D.; Roussel, Thomas J.; Gubbins, Keith E.] N Carolina State Univ, Inst Computat Sci & Engn, Raleigh, NC 27695 USA; [Liu, Ying-Chun; Moore, Joshua D.; Roussel, Thomas J.; Gubbins, Keith E.] N Carolina State Univ, Dept Chem & Biomol Engn, Raleigh, NC 27695 USA; [Liu, Ying-Chun] Zhejiang Univ, Dept Chem, Hangzhou 310027, Zhejiang, Peoples R China

E-mail Address:
keg@ncsu.edu

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Cited Reference Count:
57

Times Cited:
0

Publisher:
ROYAL SOC CHEMISTRY; THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND

Subject Category:
Chemistry, Physical; Physics, Atomic, Molecular & Chemical

ISSN:
1463-9076

DOI:
10.1039/b927152j

IDS Number:
611NW

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ISI Web of Knowledge Alert - Holt JK

ISI Web of Knowledge Citation Alert

Cited Article: Holt JK. Fast mass transport through sub-2-nanometer carbon nanotubes
Alert Expires: 09 NOV 2010
Number of Citing Articles: 1 new records this week (1 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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PT J
*Record 1 of 1.
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AU Yu, MA
Funke, HH
Falconer, JL
Noble, RD
AF Yu, Miao
Funke, Hans H.
Falconer, John L.
Noble, Richard D.
TI Gated Ion Transport through Dense Carbon Nanotube Membranes
SO JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
LA English
DT Article
ID WATER-ADSORPTION; CHANNEL; SELECTIVITY; CONDUCTION
AB Gated ion diffusion is found widely in hydrophobic biological
nanopores, upon changes in ligand binding, temperature, transmembrane
voltage, and mechanical stress. Because water is the main media for ion
diffusion in these hydrophobic biological pores, ion diffusion behavior
through these nanochannels is expected to be influenced significantly
when water wettability in hydrophobic biological nanopores is sensitive
and changes upon small external changes. Here, we report for the first
time that ion diffusion through highly hydrophobic nanopores (similar
to 3 nm) showed a gated behavior due to change of water wettability on
hydrophobic surface upon small temperature change or ultrasound. Dense
carbon nanotube (CNT) membranes with both 3-nm CNTs and 3-nm
interstitial pores were prepared by a solvent evaporation process and
used as a model system to investigate ion diffusion behavior. Ion
diffusion through these membranes exhibited a gated behavior. The ion
flux was turned on and off, apparently because the water wettability of
CNTs changed. At 298 K, ion diffusion through dense CNT membranes
stopped after a few hours, but it dramatically increased when the
temperature was increased 20 K or the membrane was subjected to
ultrasound. Likewise, water adsorption on dense CNT membranes increased
dramatically at a water activity of 0.53 when the temperature increased
from 293 to 306 K, indicating capillary condensation. Water adsorption
isotherms of dense CNT membranes suggest that the adsorbed water forms
a discontinuous phase at 293 K, but it probably forms a continuous
layer, probably in the interstitial CNT regions, at higher
temperatures. When the ion diffusion channel was opened by a
temperature increase or ultrasound, ions diffused through the CNT
membranes at a rate similar to bulk diffusion in water. This finding
may have implications for using CNT membrane for desalination and water
treatment.
C1 [Yu, Miao; Funke, Hans H.; Falconer, John L.; Noble, Richard D.] Univ Colorado, Dept Chem & Biol Engn, Boulder, CO 80309 USA.
RP Falconer, JL, Univ Colorado, Dept Chem & Biol Engn, Boulder, CO 80309
USA.
EM john.falconer@colorado.edu
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HUMMER G, 2001, NATURE, V414, P188
KIM S, 2007, NANO LETT, V7, P2806, DOI 10.1021/nl071414u
LI JY, 2007, P NATL ACAD SCI USA, V104, P3687, DOI
10.1073/pnas.0604541104
MAJUMDER M, 2005, NATURE, V438, P44, DOI 10.1038/43844a
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NR 22
TC 0
PU AMER CHEMICAL SOC; 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 0002-7863
DI 10.1021/ja9091769
PD JUN 23
VL 132
IS 24
BP 8285
EP 8290
SC Chemistry, Multidisciplinary
GA 612NJ
UT ISI:000278905700026
ER

EF

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ISI Web of Knowledge Alert - Majumder M

ISI Web of Knowledge Citation Alert

Cited Article: Majumder M. Nanoscale hydrodynamics - Enhanced flow in carbon nanotubes
Alert Expires: 09 NOV 2010
Number of Citing Articles: 2 new records this week (2 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
Analysis of pressure-driven electrokinetic flows in hydrophobic microchannels with slip-dependent zeta potential

Authors:
Soong, CY; Hwang, PW; Wang, JC

Author Full Names:
Soong, C. Y.; Hwang, P. W.; Wang, J. C.

Source:
MICROFLUIDICS AND NANOFLUIDICS 9 (2-3): 211-223 AUG 2010

Language:
English

Document Type:
Article

Author Keywords:
Microchannel flow; Electrokinetics; Hydrophobic channel; Slip effect; Apparent zeta potential

KeyWords Plus:
LIQUID FLOW; ELECTROOSMOTIC FLOW; MICROFLUIDICS

Abstract:
The present study is an analysis of pressure-driven electrokinetic flows in hydrophobic microchannels with emphasis on the slip effects under coupling of interfacial electric and fluid slippage phenomena. Commonly used linear model with slip-independent zeta potential and the nonlinear model at limiting (high-K) condition with slip-dependent zeta potential are solved analytically. Then, numerical solutions of the electrokinetic flow model with zeta potential varying with slip length are analyzed. Different from the general notion of "the more hydrophobic the channel wall, the higher the flowrate," the results with slip-independent and slip-dependent zeta potentials both disclose that flowrate becomes insensitive to the wall hydrophobicity or fluid slippage at sufficiently large slip lengths. Boundary slip not only assists fluid motion but also enhances counter-ions transport in EDL and, thus, results in strong streaming potential as well as electrokinetic retardation. With s!
lip-dependent zeta potential considered, flowrate varies non-monotonically with increasing slip length due to competition of the favorable and adverse effects with more complicated interactions. The influence of the slip on the electrokinetic flow is eventually nullified at large slip lengths for balance of the counter effects, and the flowrate becomes insensitive to further hydrophobicity of the microchannel. The occurrence of maximum, minimum, and insensitivity on the flowrate-slip curves can be premature at a higher zeta potential and/or larger electrokinetic separation distance.

Reprint Address:
Soong, CY, Feng Chia Univ, Dept Aerosp & Syst Engn, Taichung 40724, Taiwan.

Research Institution addresses:
[Soong, C. Y.; Hwang, P. W.; Wang, J. C.] Feng Chia Univ, Dept Aerosp & Syst Engn, Taichung 40724, Taiwan

E-mail Address:
cysoong@fcu.edu.tw

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TANDON V, 2008, ELECTROPHORESIS, V29, P1102, DOI 10.1002/elps.200800735.
TRETHEWAY DC, 2002, PHYS FLUIDS, V14, P9.
TRUESDELL R, 2006, PHYS REV LETT, V97, ARTN 044504.
VENDITTI R, 2006, MICROFLUID NANOFLUID, V2, P493, DOI 10.1007/s10404-006-0100-0.
VERONOV RS, 2008, IND ENG CHEM REV, V47, P2455.
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Cited Reference Count:
25

Times Cited:
0

Publisher:
SPRINGER HEIDELBERG; TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY

Subject Category:
Nanoscience & Nanotechnology; Instruments & Instrumentation; Physics, Fluids & Plasmas

ISSN:
1613-4982

DOI:
10.1007/s10404-009-0536-0

IDS Number:
612VJ

========================================================================

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Title:
Gated Ion Transport through Dense Carbon Nanotube Membranes

Authors:
Yu, MA; Funke, HH; Falconer, JL; Noble, RD

Author Full Names:
Yu, Miao; Funke, Hans H.; Falconer, John L.; Noble, Richard D.

Source:
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 132 (24): 8285-8290 JUN 23 2010

Language:
English

Document Type:
Article

KeyWords Plus:
WATER-ADSORPTION; CHANNEL; SELECTIVITY; CONDUCTION

Abstract:
Gated ion diffusion is found widely in hydrophobic biological nanopores, upon changes in ligand binding, temperature, transmembrane voltage, and mechanical stress. Because water is the main media for ion diffusion in these hydrophobic biological pores, ion diffusion behavior through these nanochannels is expected to be influenced significantly when water wettability in hydrophobic biological nanopores is sensitive and changes upon small external changes. Here, we report for the first time that ion diffusion through highly hydrophobic nanopores (similar to 3 nm) showed a gated behavior due to change of water wettability on hydrophobic surface upon small temperature change or ultrasound. Dense carbon nanotube (CNT) membranes with both 3-nm CNTs and 3-nm interstitial pores were prepared by a solvent evaporation process and used as a model system to investigate ion diffusion behavior. Ion diffusion through these membranes exhibited a gated behavior. The ion flux was turned on an!
d off, apparently because the water wettability of CNTs changed. At 298 K, ion diffusion through dense CNT membranes stopped after a few hours, but it dramatically increased when the temperature was increased 20 K or the membrane was subjected to ultrasound. Likewise, water adsorption on dense CNT membranes increased dramatically at a water activity of 0.53 when the temperature increased from 293 to 306 K, indicating capillary condensation. Water adsorption isotherms of dense CNT membranes suggest that the adsorbed water forms a discontinuous phase at 293 K, but it probably forms a continuous layer, probably in the interstitial CNT regions, at higher temperatures. When the ion diffusion channel was opened by a temperature increase or ultrasound, ions diffused through the CNT membranes at a rate similar to bulk diffusion in water. This finding may have implications for using CNT membrane for desalination and water treatment.

Reprint Address:
Falconer, JL, Univ Colorado, Dept Chem & Biol Engn, Boulder, CO 80309 USA.

Research Institution addresses:
[Yu, Miao; Funke, Hans H.; Falconer, John L.; Noble, Richard D.] Univ Colorado, Dept Chem & Biol Engn, Boulder, CO 80309 USA

E-mail Address:
john.falconer@colorado.edu

Cited References:
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Cited Reference Count:
22

Times Cited:
0

Publisher:
AMER CHEMICAL SOC; 1155 16TH ST, NW, WASHINGTON, DC 20036 USA

Subject Category:
Chemistry, Multidisciplinary

ISSN:
0002-7863

DOI:
10.1021/ja9091769

IDS Number:
612NJ

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ISI Web of Knowledge Alert - Thompson, P

ISI Web of Knowledge Citation Alert

Cited Article: Thompson, P. A general boundary condition for liquid flow at solid surfaces
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:
Corrected second-order slip boundary condition for fluid flows in nanochannels

Authors:
Zhang, HW; Zhang, ZQ; Zheng, YG; Ye, HF

Author Full Names:
Zhang, Hongwu; Zhang, Zhongqiang; Zheng, Yonggang; Ye, Hongfei

Source:
PHYSICAL REVIEW E 81 (6): Art. No. 066303 Part 2 JUN 8 2010

Language:
English

Document Type:
Article

KeyWords Plus:
MOLECULAR-DYNAMICS SIMULATION; INHOMOGENEOUS FLUIDS; CONFINED LIQUIDS; SOLID INTERFACE; GAS; SOLIDIFICATION; SURFACES

Abstract:
A corrected second-order slip boundary condition is proposed to solve the Navier-Stokes equations for fluid flows confined in parallel-plate nanochannels. Compared with the classical second-order slip boundary condition proposed by Beskok and Karniadakis, the corrected slip boundary condition is not only dependent on the Knudsen number and the tangential momentum accommodation coefficient, but also dependent on the relative position of the slip surface in the Knudsen layer. For the fluid flows in slip-flow regime with the Knudsen number less than 0.3, Couette cell is investigated using molecular-dynamics simulations to verify Newtonian flow behaviors by examining the constitutive relationship between shear stress and strain rate. By comparing the velocity profiles of Poiseuille flows predicted from the Navier-Stokes equations with the corrected slip boundary condition with that from molecular-dynamics simulations, it is found that the flow behaviors in our models can be effe!
ctively captured.

Reprint Address:
Zhang, HW, Dalian Univ Technol, Fac Vehicle Engn & Mech, Dept Engn Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China.

Research Institution addresses:
[Zhang, Hongwu; Zhang, Zhongqiang; Zheng, Yonggang; Ye, Hongfei] Dalian Univ Technol, Fac Vehicle Engn & Mech, Dept Engn Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China

E-mail Address:
zhanghw@dlut.edu.cn

Cited References:
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Cited Reference Count:
36

Times Cited:
0

Publisher:
AMER PHYSICAL SOC; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA

Subject Category:
Physics, Fluids & Plasmas; Physics, Mathematical

ISSN:
1539-3755

DOI:
10.1103/PhysRevE.81.066303

IDS Number:
607II

========================================================================

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Title:
Viscous heating in nanoscale shear driven liquid flows

Authors:
Kim, BH; Beskok, A; Cagin, T

Author Full Names:
Kim, Bo Hung; Beskok, Ali; Cagin, Tahir

Source:
MICROFLUIDICS AND NANOFLUIDICS 9 (1): 31-40 JUL 2010

Language:
English

Document Type:
Article

Author Keywords:
Nano-scale heat transfer; Kapitza resistance; Kapitza length; Shear flow; Viscous heating

KeyWords Plus:
MOLECULAR-DYNAMICS SIMULATION; BOUNDARY-CONDITIONS; THERMAL TRANSPORT; SOLID INTERFACE; FOURIER-LAW; FLUID-FLOW; EQUILIBRIUM; MECHANICS; SURFACES; STATES

Abstract:
Three-dimensional Molecular Dynamics (MD) simulations of heat and momentum transport in liquid Argon filled shear-driven nano-channels are performed using 6-12 Lennard-Jones potential interactions. Work done by the viscous stresses heats the fluid, which is dissipated through the channel walls, maintained at isothermal conditions through a recently developed interactive thermal wall model. Shear driven nano-flows for weak wetting surfaces (epsilon (wf) /epsilon a parts per thousand currency sign 0.6) are investigated. Spatial variations in the fluid density, kinematic viscosity, shear- and energy dissipation rates are presented. Temperature profiles in the nano-channel are obtained as a function of the surface wettability, shear rate and the intermolecular stiffness of wall molecules. The energy dissipation rate is almost a constant for epsilon (wf) /epsilon a parts per thousand currency sign 0.6, which results in parabolic temperature profiles in the domain with temperature!
jumps due to the well known Kapitza resistance at the liquid/solid interfaces. Using the energy dissipation rates predicted by MD simulations and the continuum energy equation subjected to the temperature jump boundary conditions developed in [Kim et al. Journal of Chemical Physics, 129, 174701, 2008b], we obtain analytical solutions for the temperature profiles, which agree well with the MD results.

Reprint Address:
Beskok, A, Old Dominion Univ, Dept Aerosp Engn, Norfolk, VA 23529 USA.

Research Institution addresses:
[Kim, Bo Hung; Beskok, Ali] Old Dominion Univ, Dept Aerosp Engn, Norfolk, VA 23529 USA; [Cagin, Tahir] Texas A&M Univ, Dept Chem Engn, College Stn, TX 77840 USA

E-mail Address:
abeskok@odu.edu

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Cited Reference Count:
31

Times Cited:
0

Publisher:
SPRINGER HEIDELBERG; TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY

Subject Category:
Nanoscience & Nanotechnology; Instruments & Instrumentation; Physics, Fluids & Plasmas

ISSN:
1613-4982

DOI:
10.1007/s10404-009-0515-5

IDS Number:
607SH

========================================================================

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Title:
Direct transition of potential of water droplets to electric energy using aligned single-walled carbon nanotubes

Authors:
Liu, J; Zheng, KH; Liu, Z; Hu, LJ; Sun, LF

Author Full Names:
Liu Ji; Zheng Kai-Hong; Liu Zheng; Hu Li-Jun; Sun Lian-Feng

Source:
CHINESE PHYSICS B 19 (6): Art. No. 066101 JUN 2010

Language:
English

Document Type:
Article

Author Keywords:
single-walled carbon nanotube; water; energy conversion

KeyWords Plus:
FLOW

Abstract:
In this paper, we report that an electromotive force (EMF) can be induced in a rope of aligned single-walled carbon nanotubes (SWNTs) when water droplets fall on this rope. The magnitude of this EMF depends sensitively on the slant angle of the SWNTs. Most interestingly, both the magnitude and the direction of the induced EFM can be modulated by applying a current to the SWNTs. The concepts of electrical slip and no-slip are proposed and can be quantitatively described by "electrical slip resistance". This kind of generator does not need any magnet, rotor, etc and shows quite a different operating mechanism and design compared with a conventional large scale hydroelectric power generator.

Reprint Address:
Sun, LF, Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China.

Research Institution addresses:
[Liu Ji; Zheng Kai-Hong; Liu Zheng; Hu Li-Jun; Sun Lian-Feng] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China; [Liu Ji; Liu Zheng; Hu Li-Jun] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

E-mail Address:
slf@nanoctr.cn

Cited References:
CHESNOKOV SA, 1999, PHYS REV LETT, V82, P343.
COHEN AE, 2003, SCIENCE, V300, P1235.
COLLINS PG, 2000, SCIENCE, V287, P1801.
EBBESEN TW, 1996, NATURE, V382, P54.
GHOSH S, 2003, SCIENCE, V299, P1042, DOI 10.1126/science.1079080.
GHOSH S, 2003, SCIENCE, V300, P1235.
GHOSH S, 2004, PHYS REV B, V70, ARTN 205423.
HOLT JK, 2006, SCIENCE, V312, P1034, DOI 10.1126/science.1126298.
KRAL P, 2001, PHYS REV LETT, V86, P131.
LIU GT, 2008, NANO LETT, V8, P1071, DOI 10.1021/nl073007o.
LIU JW, 2007, J APPL PHYS, V101, ARTN 064312.
MAJUMDER M, 2005, NATURE, V438, P44, DOI 10.1038/43844a.
PARADISO JA, 2005, IEEE PERVAS COMPUT, V4, P18.
PERSSON BNJ, 2006, PHYS REV B, V69, UNSP 235410.
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Cited Reference Count:
26

Times Cited:
0

Publisher:
IOP PUBLISHING LTD; DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND

Subject Category:
Physics, Multidisciplinary

ISSN:
1674-1056

DOI:
10.1088/1674-1056/19/6/066101

IDS Number:
608VG

========================================================================
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ISI Web of Knowledge Alert - Ghosh, S

ISI Web of Knowledge Citation Alert

Cited Article: Ghosh, S. Carbon nanotube flow sensors
Alert Expires: 09 NOV 2010
Number of Citing Articles: 2 new records this week (2 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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*Record 1 of 2.
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Title:
Direct transition of potential of water droplets to electric energy using aligned single-walled carbon nanotubes

Authors:
Liu, J; Zheng, KH; Liu, Z; Hu, LJ; Sun, LF

Author Full Names:
Liu Ji; Zheng Kai-Hong; Liu Zheng; Hu Li-Jun; Sun Lian-Feng

Source:
CHINESE PHYSICS B 19 (6): Art. No. 066101 JUN 2010

Language:
English

Document Type:
Article

Author Keywords:
single-walled carbon nanotube; water; energy conversion

KeyWords Plus:
FLOW

Abstract:
In this paper, we report that an electromotive force (EMF) can be induced in a rope of aligned single-walled carbon nanotubes (SWNTs) when water droplets fall on this rope. The magnitude of this EMF depends sensitively on the slant angle of the SWNTs. Most interestingly, both the magnitude and the direction of the induced EFM can be modulated by applying a current to the SWNTs. The concepts of electrical slip and no-slip are proposed and can be quantitatively described by "electrical slip resistance". This kind of generator does not need any magnet, rotor, etc and shows quite a different operating mechanism and design compared with a conventional large scale hydroelectric power generator.

Reprint Address:
Sun, LF, Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China.

Research Institution addresses:
[Liu Ji; Zheng Kai-Hong; Liu Zheng; Hu Li-Jun; Sun Lian-Feng] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China; [Liu Ji; Liu Zheng; Hu Li-Jun] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

E-mail Address:
slf@nanoctr.cn

Cited References:
CHESNOKOV SA, 1999, PHYS REV LETT, V82, P343.
COHEN AE, 2003, SCIENCE, V300, P1235.
COLLINS PG, 2000, SCIENCE, V287, P1801.
EBBESEN TW, 1996, NATURE, V382, P54.
GHOSH S, 2003, SCIENCE, V299, P1042, DOI 10.1126/science.1079080.
GHOSH S, 2003, SCIENCE, V300, P1235.
GHOSH S, 2004, PHYS REV B, V70, ARTN 205423.
HOLT JK, 2006, SCIENCE, V312, P1034, DOI 10.1126/science.1126298.
KRAL P, 2001, PHYS REV LETT, V86, P131.
LIU GT, 2008, NANO LETT, V8, P1071, DOI 10.1021/nl073007o.
LIU JW, 2007, J APPL PHYS, V101, ARTN 064312.
MAJUMDER M, 2005, NATURE, V438, P44, DOI 10.1038/43844a.
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26

Times Cited:
0

Publisher:
IOP PUBLISHING LTD; DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND

Subject Category:
Physics, Multidisciplinary

ISSN:
1674-1056

DOI:
10.1088/1674-1056/19/6/066101

IDS Number:
608VG

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Title:
Raman spectroelectrochemistry of a single-wall carbon nanotube bundle

Authors:
Zhang, L; Liao, V; Yu, ZH

Author Full Names:
Zhang, Li; Liao, Virginia; Yu, Zhonghua

Source:
CARBON 48 (9): 2582-2589 AUG 2010

Language:
English

Document Type:
Article

KeyWords Plus:
CHEMICAL-VAPOR-DEPOSITION; FIELD-EFFECT TRANSISTORS; ELECTRONIC-STRUCTURE; CHARGE-TRANSFER; SPECTROSCOPY; RENORMALIZATION; SCATTERING; DIAMETER; SENSORS; GROWTH

Abstract:
Raman microscopy and spectroelectrochemistry with polymer electrolyte gating is developed to study the effect of charging on Raman spectra of individual single-wall carbon nanotubes (SWCNTs) and bundles. The Raman spectra of a small bundle, consisting of well-separated features from a metallic and a semiconducting SWCNT, have been obtained at different electrochemical charging levels. The broad Fano peak of the metallic SWCNT exhibits an appreciable frequency upshift and simultaneous line narrowing when the charging level, either positive or negative, is increased, in agreement with the presence of a Kohn anomaly in metallic SWCNTs. The radial breathing mode of the metallic tube also shows a similar but much weaker dependence on the charging potential. While the G mode frequencies of the semiconducting SWCNT also increase with the increasing charging level, the magnitude of such change is much smaller than in the metallic SWCNT. At high negative charging potentials the G(-) !
peak of the semiconducting SWCNT exhibits a larger upshift than its G(+) peak, leading to the observation of merging of these two peaks. However, both G(+) and G(-) peaks of the semiconducting SWCNT become broader at high charging levels, which are not predicted from previous theoretical studies. (C) 2010 Elsevier Ltd. All rights reserved.

Reprint Address:
Yu, ZH, CUNY City Coll, Dept Chem, New York, NY 10031 USA.

Research Institution addresses:
[Zhang, Li; Liao, Virginia; Yu, Zhonghua] CUNY City Coll, Dept Chem, New York, NY 10031 USA

E-mail Address:
zyu@sci.ccny.cuny.edu

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Cited Reference Count:
58

Times Cited:
0

Publisher:
PERGAMON-ELSEVIER SCIENCE LTD; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND

Subject Category:
Chemistry, Physical; Materials Science, Multidisciplinary

ISSN:
0008-6223

DOI:
10.1016/j.carbon.2010.03.061

IDS Number:
608LK

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