Citation Alerts

Friday, September 17, 2010

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: 1 new records this week (1 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
Detection of C-Reactive Protein in Evanescent Wave Field Using Microparticle-Tracking Velocimetry

Authors:
Fan, YJ; Sheen, HJ; Liu, YH; Tsai, JF; Wu, TH; Wu, KC; Lin, SM

Author Full Names:
Fan, Yu-Jui; Sheen, Horn-Jiunn; Liu, Yi-Hsing; Tsai, Jing-Fa; Wu, Tzu-Heng; Wu, Kuang-Chong; Lin, Shiming

Source:
LANGMUIR 26 (17): 13751-13754 SEP 7 2010

Language:
English

Document Type:
Article

KeyWords Plus:
REFLECTION FLUORESCENCE MICROSCOPY; SLOW VISCOUS MOTION; SPHERE PARALLEL; PLANE WALL; FLOW; NANOPARTICLES; IMMUNOSENSOR; ILLUMINATION; SURFACE

Abstract:
A new technique is developed to measure the nanoparticles' Brownian motions by employing microparticle-tracking velocimetry (micro-PTV) in evanescent wave field, which can provide high signal-to-noise ratio images for analyzing nanoparticles. movements. This method enables real-time detection of C-reactive proteins (CRPs) during the rapid interaction between CRPs and anti-CRP-coated nanobeads as CRP concentrations are related to the nanobeads' Brownian velocity in the equilibrium state. The smallest observable nanobeads with 185 nm were utilized in this experiment to detect CRP concentrations as low as 0.1 mu g/mL. even in a high-viscosity solution. Further, the dissociation constant, K-D, can be evaluated based on the experimental results.

Reprint Address:
Sheen, HJ, Natl Taiwan Univ, Inst Appl Mech, Taipei 106, Taiwan.

Research Institution addresses:
[Fan, Yu-Jui; Sheen, Horn-Jiunn; Wu, Tzu-Heng; Wu, Kuang-Chong; Lin, Shiming] Natl Taiwan Univ, Inst Appl Mech, Taipei 106, Taiwan; [Lin, Shiming] Natl Taiwan Univ, Ctr Optoelect Biomed, Taipei 106, Taiwan

E-mail Address:
sheenh@ntu.edu.tw

Cited References:
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Cited Reference Count:
26

Times Cited:
0

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

Subject Category:
Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary

ISSN:
0743-7463

DOI:
10.1021/la102137j

IDS Number:
644DX

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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: 3 new records this week (3 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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FN ISI Export Format
VR 1.0

PT J
*Record 1 of 3.
L5 <http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS&DestLinkType=FullRecord;UT=000281378400007>
*Order Full Text [ ]
AU Khan, SH
Matei, G
Patil, S
Hoffmann, PM
AF Khan, Shah H.
Matei, George
Patil, Shivprasad
Hoffmann, Peter M.
TI Dynamic Solidification in Nanoconfined Water Films
SO PHYSICAL REVIEW LETTERS
LA English
DT Article
ID INTERFACIAL WATER; VISCOSITY
AB Mechanical properties of nanoconfined water layers are still poorly
understood and continue to create controversy, despite their importance
for biology and nanotechnology. We report on dynamic nano-mechanical
measurements of water films compressed to a few single molecular
layers. We show that the mechanical properties of nanoconfined water
layers change significantly with their dynamic state. In particular, we
observed a sharp transition from viscous to elastic response even at
extremely slow compression rates, indicating that mechanical relaxation
times increase dramatically once water is compressed to less than 3-4
molecular layers.
C1 [Khan, Shah H.; Matei, George; Hoffmann, Peter M.] Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 USA.
[Patil, Shivprasad] Indian Inst Sci Educ & Res, Pune 411021, Maharashtra, India.
RP Khan, SH, Wayne State Univ, Dept Phys & Astron, Detroit, MI 48201 USA.
EM hoffmann@wayne.edu
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10.1088/0957-4484/16/3/009
VERDAGUER A, 2006, CHEM REV, V106, P1478, DOI 10.1021/cr040376l
ZHU Y, 2003, LANGMUIR, V19, P8148, DOI 10.1021/la035155+
ZHU YX, 2001, PHYS REV LETT, V87, ARTN 096104
NR 23
TC 0
PU AMER PHYSICAL SOC; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 0031-9007
DI 10.1103/PhysRevLett.105.106101
PD AUG 30
VL 105
IS 10
AR 106101
SC Physics, Multidisciplinary
GA 644LH
UT ISI:000281378400007
ER

PT J
*Record 2 of 3.
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*Order Full Text [ ]
AU Garaj, S
Hubbard, W
Reina, A
Kong, J
Branton, D
Golovchenko, JA
AF Garaj, S.
Hubbard, W.
Reina, A.
Kong, J.
Branton, D.
Golovchenko, J. A.
TI Graphene as a subnanometre trans-electrode membrane
SO NATURE
LA English
DT Article
ID CARBON NANOTUBES; LARGE-AREA; DNA; NANOPORES; MOLECULES; WATER
AB Isolated, atomically thin conducting membranes of graphite, called
graphene, have recently been the subject of intense research with the
hope that practical applications in fields ranging from electronics to
energy science will emerge(1). The atomic thinness, stability and
electrical sensitivity of graphene motivated us to investigate the
potential use of graphene membranes and graphene nanopores to
characterize single molecules of DNA in ionic solution. Here we show
that when immersed in an ionic solution, a layer of graphene becomes a
new electrochemical structure that we call a transelectrode. The
trans-electrode's unique properties are the consequence of the
atomic-scale proximity of its two opposing liquid-solid interfaces
together with graphene's well known inplane conductivity. We show that
several trans-electrode properties are revealed by ionic conductance
measurements on a graphene membrane that separates two aqueous ionic
solutions. Although our membranes are only one to two atomic
layers(2,3) thick, we find they are remarkable ionic insulators with a
very small stable conductance that depends on the ion species in
solution. Electrical measurements on graphene membranes in which a
single nanopore has been drilled show that the membrane's effective
insulating thickness is less than one nanometre. This small effective
thickness makes graphene an ideal substrate for very high resolution,
high throughput nanopore-based single-molecule detectors. The
sensitivity of graphene's in-plane electronic conductivity to its
immediate surface environment and trans-membrane solution potentials
will offer new insights into atomic surface processes and sensor
development opportunities.
C1 [Garaj, S.; Golovchenko, J. A.] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA.
[Hubbard, W.; Golovchenko, J. A.] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA.
[Reina, A.] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA.
[Kong, J.] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA.
[Branton, D.] Harvard Univ, Dept Mol & Cellular Biol, Cambridge, MA 02138 USA.
RP Golovchenko, JA, Harvard Univ, Dept Phys, Cambridge, MA 02138 USA.
EM sgaraj@fas.harvard.edu
golovchenko@physics.harvard.edu
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MERCHANT CA, 2010, NANO LETT, DOI 10.1021/NL101046T
REINA A, 2009, NANO LETT, V9, P30, DOI 10.1021/nl801827v
REINA A, 2009, NANO RES, V2, P509, DOI 10.1007/s12274-009-9059-y
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NR 21
TC 1
PU NATURE PUBLISHING GROUP; MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1
9XW, ENGLAND
SN 0028-0836
DI 10.1038/nature09379
PD SEP 9
VL 467
IS 7312
BP 190
EP U73
SC Multidisciplinary Sciences
GA 647KB
UT ISI:000281616300030
ER

PT J
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AU Schoen, DT
Schoen, AP
Hu, LB
Kim, HS
Heilshorn, SC
Cui, Y
AF Schoen, David T.
Schoen, Alia P.
Hu, Liangbing
Kim, Han Sun
Heilshorn, Sarah C.
Cui, Yi
TI High Speed Water Sterilization Using One-Dimensional Nanostructures
SO NANO LETTERS
LA English
DT Article
DE Nanowires; nanotubes; environmental applications; multiscale; textile
ID SILICON NANOWIRES; CARBON NANOTUBES; SOLAR-CELLS; MEMBRANES;
PERFORMANCE; PARTICLES
AB The removal of bacteria and other organisms from water is an extremely
important process, not only for drinking and sanitation but also
industrially as biofouling is a commonplace and serious problem. We
here present a textile based multiscale device for the high speed
electrical sterilization of water using silver nanowires, carbon
nanotubes, and cotton. This approach, which combines several materials
spanning three very different length scales with simple dying based
fabrication, makes a gravity fed device operating at 100000 L/(h m(2))
which can inactivate >98% of bacteria with only several seconds of
total incubation time. This excellent performance is enabled by the use
of an electrical mechanism rather than size exclusion, while the very
high surface area of the device coupled with large electric field
concentrations near the silver nanowire tips allows for effective
bacterial inactivation.
C1 [Schoen, David T.; Schoen, Alia P.; Hu, Liangbing; Kim, Han Sun; Heilshorn, Sarah C.; Cui, Yi] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA.
RP Cui, Y, Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA.
EM yicui@stanford.edu
CR AKHAVAN O, 2009, SCI TECHNOL ADV MAT, V10, ARTN 015003
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10.1289/ehp.7339
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YOON KY, 2008, ENVIRON SCI TECHNOL, V42, P1251, DOI 10.1021/es0720199
YUAN JK, 2008, NAT NANOTECHNOL, V3, P332, DOI 10.1038/nnano.2008.136
ZHANG X, 2009, ADV FUNCT MATER, V9, P3731
NR 32
TC 0
PU AMER CHEMICAL SOC; 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
SN 1530-6984
DI 10.1021/nl101944e
PD SEP
VL 10
IS 9
BP 3628
EP 3632
SC Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials
Science, Multidisciplinary
GA 645WZ
UT ISI:000281498200068
ER

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Friday, September 10, 2010

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: 22 AUG 2011
Number of Citing Articles: 2 new records this week (2 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
Structure and mechanism of proton transport through the transmembrane tetrameric M2 protein bundle of the influenza A virus

Authors:
Acharya, R; Carnevale, V; Fiorin, G; Levine, BG; Polishchuk, AL; Balannik, V; Samish, I; Lamb, RA; Pinto, LH; DeGrado, WF; Klein, ML

Author Full Names:
Acharya, Rudresh; Carnevale, Vincenzo; Fiorin, Giacomo; Levine, Benjamin G.; Polishchuk, Alexei L.; Balannik, Victoria; Samish, Ilan; Lamb, Robert A.; Pinto, Lawrence H.; DeGrado, William F.; Klein, Michael L.

Source:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 107 (34): 15075-15080 AUG 24 2010

Language:
English

Document Type:
Article

Author Keywords:
ion channels; M2 proton channel; membrane proteins; water clusters; histidine protonation

KeyWords Plus:
SELECTIVE ION-CHANNEL; MOLECULAR-DYNAMICS; LIPID-BILAYERS; DRUG-RESISTANCE; WATER CLUSTERS; ACTIVATION; CONDUCTION; HISTIDINE; DOMAIN; STATE

Abstract:
The M2 proton channel from influenza A virus is an essential protein that mediates transport of protons across the viral envelope. This protein has a single transmembrane helix, which tetramerizes into the active channel. At the heart of the conduction mechanism is the exchange of protons between the His37 imidazole moieties of M2 and waters confined to the M2 bundle interior. Protons are conducted as the total charge of the four His37 side chains passes through 2(+) and 3(+) with a pK(a) near 6. A 1.65 angstrom resolution X-ray structure of the transmembrane protein (residues 25-46), crystallized at pH 6.5, reveals a pore that is lined by alternating layers of sidechains and well-ordered water clusters, which offer a pathway for proton conduction. The His37 residues form a box-like structure, bounded on either side by water clusters with well-ordered oxygen atoms at close distance. The conformation of the protein, which is intermediate between structures previously solved at
higher and lower pH, suggests a mechanism by which conformational changes might facilitate asymmetric diffusion through the channel in the presence of a proton gradient. Moreover, protons diffusing through the channel need not be localized to a single His37 imidazole, but instead may be delocalized over the entire His-box and associated water clusters. Thus, the new crystal structure provides a possible unification of the discrete site versus continuum conduction models.

Reprint Address:
DeGrado, WF, Univ Penn, Sch Med, Dept Biochem & Biophys, Philadelphia, PA 19104 USA.

Research Institution addresses:
[Acharya, Rudresh; Polishchuk, Alexei L.; Samish, Ilan; DeGrado, William F.] Univ Penn, Sch Med, Dept Biochem & Biophys, Philadelphia, PA 19104 USA; [Carnevale, Vincenzo; Fiorin, Giacomo; Levine, Benjamin G.; Klein, Michael L.] Temple Univ, Inst Computat Mol Sci, Philadelphia, PA 19122 USA; [Carnevale, Vincenzo; Fiorin, Giacomo; Levine, Benjamin G.; Klein, Michael L.] Temple Univ, Dept Chem, Philadelphia, PA 19122 USA; [Balannik, Victoria; Pinto, Lawrence H.] Northwestern Univ, Dept Neurobiol & Physiol, Evanston, IL 60208 USA; [Lamb, Robert A.] Northwestern Univ, Howard Hughes Med Inst, Evanston, IL 60208 USA; [Lamb, Robert A.] Northwestern Univ, Dept Biochem Mol Biol & Cell Biol, Evanston, IL 60208 USA

E-mail Address:
wdegrado@mail.med.upenn.edu; mlklein@temple.edu

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Cited Reference Count:
53

Times Cited:
0

Publisher:
NATL ACAD SCIENCES; 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 USA

Subject Category:
Multidisciplinary Sciences

ISSN:
0027-8424

DOI:
10.1073/pnas.1007071107

IDS Number:
643PT

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Title:
Filling carbon nanotubes with liquid acetonitrile

Authors:
Chaban, V

Author Full Names:
Chaban, Vitaly

Source:
CHEMICAL PHYSICS LETTERS 496 (1-3): 50-55 AUG 20 2010

Language:
English

Document Type:
Article

KeyWords Plus:
WATER; DYNAMICS; SUPERCAPACITOR; FLUID; CAPILLARITY; SIMULATIONS; CRYSTALS; MODEL

Abstract:
Carbon nanotubes and acetonitrile are of interest for modern electrochemistry since they are used to make supercapacitors more efficient. In order to assess the feasibility of this setup, molecular dynamics simulations were performed to investigate the hydrophobic degasified single-walled nanotubes filling with liquid acetonitrile. The simulation shows that nanotubes with 10 nm of length can be completely filled with acetonitrile during less than 100 ps. Surprisingly, the filling process is not significantly affected by nanotube diameter and ambient conditions. In general, the ability of small hydrophobic carbon nanotubes to be completely filled with acetonitrile is an important feature for supercapacitors. (C) 2010 Elsevier B.V. All rights reserved.

Reprint Address:
Chaban, V, Kharkov Natl Univ, Sch Chem, Svoboda Sq 4, UA-61077 Kharkov, Ukraine.

Research Institution addresses:
Kharkov Natl Univ, Sch Chem, UA-61077 Kharkov, Ukraine

E-mail Address:
vvchaban@gmail.com

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35

Times Cited:
0

Publisher:
ELSEVIER SCIENCE BV; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS

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

ISSN:
0009-2614

DOI:
10.1016/j.cplett.2010.07.003

IDS Number:
643LC

Please enter your account number here:

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: 2 new records this week (2 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
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Title:
Microscale Falling Cylinder Viscometer With Slip Boundary

Authors:
Bataineh, KM; Al-Nimr, MA; Batayneh, W

Author Full Names:
Bataineh, Khaled M.; Al-Nimr, Moh'd A.; Batayneh, Wafa

Source:
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME 132 (8): Art. No. 084502 AUG 2010

Language:
English

Document Type:
Article

Author Keywords:
microfluidics; microchannel flow; falling cylinder viscometer; slip flow; analytical solution

KeyWords Plus:
HYDROPHOBIC MICROCHANNEL WALLS; SOLID-SURFACES; CONTACT-LINE; FLUID SLIP; LIQUID; PRESSURE; WATER; FLOW; SINGULARITY; INTERFACES

Abstract:
This paper theoretically investigates the hydrodynamic behavior of a falling microcylinder viscometer. The Navier slip conditions are applied to all fluid/solid interfacial boundary conditions of the device. Previous investigations focused on the behavior at the macroscale level and did not consider the slip conditions. The slip coefficients for typical devices and operating conditions are found to be major parameters that affect the behavior of the microscale viscometer. Formulas for determining the viscosity coefficients using a microscale viscometer without considering slip conditions give inaccurate results. The theoretical model has been verified by comparing its predictions with that of the macroviscometer after neglecting the slip conditions. [DOI: 10.1115/1.4002168]

Reprint Address:
Bataineh, KM, Jordan Univ Sci & Technol, Dept Mech Engn, Irbid 22110, Jordan.

Research Institution addresses:
[Bataineh, Khaled M.; Al-Nimr, Moh'd A.; Batayneh, Wafa] Jordan Univ Sci & Technol, Dept Mech Engn, Irbid 22110, Jordan

E-mail Address:
k.bataineh@just.edu.jo

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40

Times Cited:
0

Publisher:
ASME-AMER SOC MECHANICAL ENG; THREE PARK AVE, NEW YORK, NY 10016-5990 USA

Subject Category:
Engineering, Mechanical

ISSN:
0098-2202

DOI:
10.1115/1.4002168

IDS Number:
643OT

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

Title:
State-of-art of Slip Flow in Nanochannel

Authors:
Zhang, XL; Liu, K; Li, T; Xiao, Y; Ba, DC; Wu, CM

Author Full Names:
Zhang Xiao-ling; Liu Kun; Li Tao; Xiao Yu; Ba De-chun; Wu Chun-mei

Source:
VACUUM TECHNOLOGY AND SURFACE ENGINEERING - PROCEEDINGS OF THE 9TH VACUUM METALLURGY AND SURFACE ENGINEERING CONFERENCE : 512-516 2009

Language:
English

Document Type:
Proceedings Paper

Author Keywords:
Micro-nanofluidics; Nanochannel; Velocity slip

KeyWords Plus:
HYDROPHOBIC MICROCHANNELS; BOUNDARY-CONDITION; LIQUID FLOW; NANOFLUIDICS; WATER

Abstract:
In the fields of micro-nanofluidics studies, with the channel from the micro into the nano-scale, surface properties have changed dramatically. The nano-scale slip flow of fluid has brought a significant impact on fluid transport. This article briefly introduces velocity slip factors in the nanochannel, including channel potential energy, temperatures, variable cross-section and wall roughness and so on..

Reprint Address:
Zhang, XL, Northeastern Univ, Shenyang 11004, Peoples R China.

Research Institution addresses:
[Zhang Xiao-ling; Liu Kun; Li Tao; Xiao Yu; Ba De-chun] Northeastern Univ, Shenyang 11004, Peoples R China

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Cited Reference Count:
19

Times Cited:
0

Publisher:
PUBLISHING HOUSE ELECTRONICS INDUSTRY; PO BOX 173 WANSHOU ROAD, BEIJING 100036, PEOPLES R CHINA

IDS Number:
BQK17

Please enter your account number here:

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: 1 new records this week (1 in this e-mail)
Organization ID: 3b97d1bbc1878baed0ab183d8b03130b
========================================================================
Note: Instructions on how to purchase the full text of an article and Help Desk Contact information are at the end of the e-mail.
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Title:
Multifunctional and multicomponent heterostructured one-dimensional nanostructures: advances in growth, characterisation, and applications

Authors:
Chopra, N

Author Full Names:
Chopra, N.

Source:
MATERIALS TECHNOLOGY 25 (3-4): 212-230 SEP 2010

Language:
English

Document Type:
Article

Author Keywords:
Multifunctional Heterostructures; radially heterostructured nanowires; axially heterostuctured nanowires; ID nanostructures; applications

KeyWords Plus:
CHEMICAL-VAPOR-DEPOSITION; CARBON NANOTUBE MEMBRANES; MULTISHELL NANOWIRE HETEROSTRUCTURES; FULLERENE-LIKE NANOPARTICLES; SINGLE-ELECTRON TRANSISTORS; ZNO HETEROJUNCTION ARRAYS; INDIUM NITRIDE NANOWIRES; SENSITIZED SOLAR-CELLS; LIGHT-EMITTING-DIODES; CORE-SHELL NANOWIRES

Abstract:
Multicomponent nanostructures are of immense importance due to their diverse functionality, improved stability and unique properties. In this regard, heterostructures based on one-dimensional (1D) nanostructures, such as nanotubes and nanowires, will be critical in the future development, miniaturisation and enhanced performance of devices. Of particular importance are radially or axially heterostructured nanowires that can have composition modulation in radial or axial directions with abrupt or non-abrupt interfaces. These heterostructures have immense potential in multifunctional and multicomponent nanoelectronics, optoelectronics, sensors, photocatalysts, solar cells, batteries, biomedical devices and analytical platforms. Different materials can be incorporated into radial or axial nanowire heterostructures via suitable and compatible growth method(s). This article reviews the most recent and pioneering developments in the area of radially and axially heterostructured 1D
nanostructures. In addition, various aspects of growth, device architectures, characterisation methodologies, properties and their applications have been discussed in detail. The article discusses different growth methods for single component 1D nanostructures and how these as well as new methods are being employed to fabricate heterostructured 1D nanostructures. Challenges and motivations in this area of research have been elaborated and a comprehensive literature review covering various milestones of this multifaceted research area have been discussed. The review concludes by outlining future directions and developments required to advance this field.

Reprint Address:
Chopra, N, Univ Alabama, Dept Met & Mat Engn, Ctr Mat Informat Technol MINT, 301 7th Ave,116 Houser Hall, Tuscaloosa, AL 35401 USA.

Research Institution addresses:
Univ Alabama, Dept Met & Mat Engn, Ctr Mat Informat Technol MINT, Tuscaloosa, AL 35401 USA

E-mail Address:
nchopra@eng.ua.edu

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Cited Reference Count:
248

Times Cited:
0

Publisher:
MANEY PUBLISHING; STE 1C, JOSEPHS WELL, HANOVER WALK, LEEDS LS3 1AB, W YORKS, ENGLAND

Subject Category:
Materials Science, Multidisciplinary

ISSN:
1066-7857

DOI:
10.1179/175355510X12723642365124

IDS Number:
642HM

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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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*Order Full Text [ ]
AU Verbeek, MG
AF Verbeek, Martijn G.
TI Drift velocity of a Smoluchowski gas: A numerical demonstration of the
fluctuation-dissipation theorem
SO PHYSICAL REVIEW E
LA English
DT Article
ID CARBON NANOTUBES; EQUILIBRIUM; SIMULATIONS; TRANSPORT
AB This Brief Report shows that the Smoluchowski thermostat, a stochastic
boundary condition used to mimic a diffusive gas-wall collision,
produces the correct stationary nonequilibrium states. The stationary
states are generated by placing an ideal gas coupled to a Smoluchowski
thermostat in a constant external field. It is shown by simple
numerical simulations that the resulting drift velocity is compatible
with the definition of the gas particle mobility, satisfying the
well-known fluctuation-dissipation theorem. As an interesting
application, it is shown that species that are chemically identical but
differ in surface momentum accommodation can be separated effectively
in the Knudsen regime.
RP Verbeek, MG, Dibbitsstr 12, NL-1689 EE Zwaag, Netherlands.
EM gustafverbeek@gmail.com
CR ACKERMAN DM, 2003, MOL SIMULAT, V29, P677, DOI
10.1080/0892702031000103239
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VERBEEK MG, 2010, PHYS REV E 2, V81, ARTN 046701
NR 12
TC 0
PU AMER PHYSICAL SOC; ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
SN 1539-3755
DI 10.1103/PhysRevE.82.027701
PD AUG 24
VL 82
IS 2
PN Part 2
AR 027701
SC Physics, Fluids & Plasmas; Physics, Mathematical
GA 641XB
UT ISI:000281164000009
ER

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Friday, August 27, 2010

ISI Web of Knowledge Alert - Thompson, P

ISI Web of Knowledge Citation Alert

Title:
Reptation of a semiflexible polymer through porous media

Authors:
Nam, G; Johner, A; Lee, NK

Author Full Names:
Nam, Gimoon; Johner, Albert; Lee, Nam-Kyung

Source:
JOURNAL OF CHEMICAL PHYSICS 133 (4): Art. No. 044908 JUL 28 2010

Language:
English

Document Type:
Article

KeyWords Plus:
STIFF POLYMERS; 2 DIMENSIONS; DYNAMICS; DNA; DIFFUSION; CHAIN; FLUCTUATIONS; SIMULATION; MOLECULES; MELTS

Abstract:
We study the motion of a single stiff semiflexible filament of length S through an array of topological obstacles. By means of scaling arguments and two-dimensional computer simulations, we show that the stiff chain kinetics follows the reptation picture, albeit with kinetic exponents (for the central monomer) different from those for flexible chain reptation. At early times when topological constraints are irrelevant, the chain kinetics is the anisotropic dynamics of a free filament. After the entanglement time tau(e) transverse modes are equilibrated under the topological constraints, but the chain is not yet correlated over its whole length. During the relaxation of longitudinal modes, both the longitudinal fluctuation of the central monomer and the longitudinal correlation length grow as similar to root t. After time tau(r) similar to S-2 chain ends are correlated, the chain then diffuses globally along the tube and tube renewal takes place. In the reptation regime, the !
longitudinal fluctuation of the central monomer grows like similar to t(1). The opening of the intermediate similar to root t regime, absent for a free filament, is a signature of the reptation process. Although the underlying physics is quite different, the intermediate regime is reminiscent of the internal Rouse mode relaxation found for reptating flexible chains. In most cases asymptotic power laws from scaling could be complemented by prefactors calculated analytically. Our results are supported by two-dimensional Langevin simulations with fixed obstacles via evaluation of the mean squared displacement of the central monomer. The scaling theory can be extended to long semiflexible polymers adopting random-walk equilibrium configurations and should also apply in three dimensions for porous media with pore diameter smaller than the persistence length of the filament. (C) 2010 American Institute of Physics. [doi:10.1063/1.3457999]

Reprint Address:
Lee, NK, Sejong Univ, Inst Fundamental Phys, Dept Phys, Seoul 143743, South Korea.

Research Institution addresses:
[Nam, Gimoon; Lee, Nam-Kyung] Sejong Univ, Inst Fundamental Phys, Dept Phys, Seoul 143743, South Korea; [Nam, Gimoon; Johner, Albert; Lee, Nam-Kyung] CNRS, Inst Charles Sadron, UP22, F-67034 Strasbourg 2, France

E-mail Address:
lee@sejong.ac.kr

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Cited Reference Count:
36

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, Atomic, Molecular & Chemical

ISSN:
0021-9606

DOI:
10.1063/1.3457999

IDS Number:
637YM

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