Cited Article: Ghosh, S. Carbon nanotube flow sensors
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:
Conductive bio-Polymer nano-Composites (CPC): Chitosan-carbon nanotube transducers assembled via spray layer-by-layer for volatile organic compound sensing
Authors:
Kumar, B; Feller, JF; Castro, M; Lu, JB
Author Full Names:
Kumar, Bijandra; Feller, Jean-Francois; Castro, Mickael; Lu, Jianbo
Source:
TALANTA 81 (3): 908-915 MAY 15 2010
Language:
English
Document Type:
Article
Author Keywords:
Conductive bio-Polymer nano-Composites (CPC); Chitosan; Carbon nanotube (CNT); Solvent vapour sensing; AFM; E-nose
KeyWords Plus:
ELECTRONIC NOSE; VAPOR SENSORS; BLACK; ARRAY; GAS; NANOCOMPOSITES; NANOPARTICLE; DEPOSITION; BIOSENSOR; BEHAVIOR
Abstract:
The chemo-electrical properties of chitosan-carbon nanotubes (Chit-CNT) Conductive bio-Polymer nano-Composites (CPC) transducers processed by spray layer-by-layer (LbL) technique have been investigated. Results show that unlike most synthetic polymer matrices, chitosan provides the transducer with high sensitivity towards not only polar vapours like water and methanol but also to a lesser extent toluene. Quantitative responses are obtained, well fitted with the Langmuir-Henry-Clustering (LHC) model allowing to link electrical signal to vapour content. Chit-CNT transducers selectivity was also correlated with an exponential law to the inverse of Flory-Huggins interaction parameter chi(12). These properties make Chit-CNT a good transducer to be implemented in an e-nose. Additionally, the observation by atomic force microscopy (AFM) of Chit-CNT morphology suggests a chemical nano-switching mechanism promoting tunnelling conduction and originating macroscopic vapour sensing. (C)!
2010 Elsevier B.V. All rights reserved.
Reprint Address:
Feller, JF, European Univ Brittany UEB, Smart Plast Grp, LIMAT UBS, Lorient, France.
Research Institution addresses:
[Kumar, Bijandra; Feller, Jean-Francois; Castro, Mickael; Lu, Jianbo] European Univ Brittany UEB, Smart Plast Grp, LIMAT UBS, Lorient, France
E-mail Address:
jean-francois.feller@univ-ubs.fr
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Cited Reference Count:
73
Times Cited:
0
Publisher:
ELSEVIER SCIENCE BV; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Subject Category:
Chemistry, Analytical
ISSN:
0039-9140
DOI:
10.1016/j.talanta.2010.01.036
IDS Number:
586CA
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Title:
Chemically driven carbon-nanotube-guided thermopower waves
Authors:
Choi, W; Hong, S; Abrahamson, JT; Han, JH; Song, C; Nair, N; Baik, S; Strano, MS
Author Full Names:
Choi, Wonjoon; Hong, Seunghyun; Abrahamson, Joel T.; Han, Jae-Hee; Song, Changsik; Nair, Nitish; Baik, Seunghyun; Strano, Michael S.
Source:
NATURE MATERIALS 9 (5): 423-429 MAY 2010
Language:
English
Document Type:
Article
KeyWords Plus:
X-RAY-DIFFRACTION; RDX FLAME STRUCTURE; COMBUSTION; MICROTHRUSTER; MECHANISM; MONOPROPELLANT; PRESSURE; IGNITION; FLOW
Abstract:
Theoretical calculations predict that by coupling an exothermic chemical reaction with a nanotube or nanowire possessing a high axial thermal conductivity, a self-propagating reactive wave can be driven along its length. Herein, such waves are realized using a 7-nm cyclotrimethylene trinitramine annular shell around a multiwalled carbon nanotube and are amplified by more than 10(4) times the bulk value, propagating faster than 2 m s(-1), with an effective thermal conductivity of 1.28 +/- 0.2 kW m(-1) K-1 at 2,860 K. This wave produces a concomitant electrical pulse of disproportionately high specific power, as large as 7 kW kg(-1), which we identify as a thermopower wave. Thermally excited carriers flow in the direction of the propagating reaction with a specific power that scales inversely with system size. The reaction also evolves an anisotropic pressure wave of high total impulse per mass (300 N s kg(-1)). Such waves of high power density may find uses as unique energy s!
ources.
Reprint Address:
Choi, W, MIT, Dept Chem Engn, Cambridge, MA 02139 USA.
Research Institution addresses:
[Choi, Wonjoon; Abrahamson, Joel T.; Han, Jae-Hee; Song, Changsik; Nair, Nitish; Strano, Michael S.] MIT, Dept Chem Engn, Cambridge, MA 02139 USA; [Choi, Wonjoon] MIT, Dept Mech Engn, Cambridge, MA 02139 USA; [Hong, Seunghyun; Baik, Seunghyun] Sungkyunkwan Univ, SKKU Adv Inst Nanotechnol, Dept Energy Sci, Gyeonggi 440746, South Korea; [Hong, Seunghyun; Baik, Seunghyun] Sungkyunkwan Univ, Sch Mech Engn, Gyeonggi 440746, South Korea
E-mail Address:
strano@mit.edu
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Cited Reference Count:
39
Times Cited:
1
Publisher:
NATURE PUBLISHING GROUP; MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND
Subject Category:
Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
ISSN:
1476-1122
DOI:
10.1038/nmat2714
IDS Number:
586YZ
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Title:
Single-walled carbon nanotube network/poly composite thin film for flow sensor
Authors:
Cao, H; Gan, ZY; Lv, Q; Yan, H; Luo, XB; Song, XH; Liu, S
Author Full Names:
Cao, Hui; Gan, Zhiyin; Lv, Qiang; Yan, Han; Luo, Xiaobin; Song, Xiaohui; Liu, Sheng
Source:
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS 16 (6): 955-959 JUN 2010
Language:
English
Document Type:
Article
KeyWords Plus:
FABRICATION
Abstract:
A fabrication method about single-walled carbon nanotube (SWCNT) network and polydimethylsiloxane (PDMS) based composite thin film is reported, which can be used as flow sensor cell. This composite thin film is immersed in deionized water and salt solution with different flow rate tests. The morphology of SWCNTs on the surface of the composite thin film is characterized by scanning electron microscopy, revealing the SWCNTs are coated by PDMS chains. The induced voltage generates along the direction of the flowing liquid and depends significantly on the ionic concentration and flow velocity. Since the SWCNTs are fixed into PDMS matrix, the I-V curves of the composite thin film before and after several flow velocity measurements are exactly coincident, and the repeating flow-induced voltage experiment shows the composite thin film has a reliable electric characteristic and wide potential of device application.
Reprint Address:
Liu, S, Wuhan Natl Lab Optoelect, Inst Microsyst, 1037 Luoyu Rd, Wuhan 430074, Peoples R China.
Research Institution addresses:
[Cao, Hui; Gan, Zhiyin; Lv, Qiang; Yan, Han; Luo, Xiaobin; Liu, Sheng] Wuhan Natl Lab Optoelect, Inst Microsyst, Wuhan 430074, Peoples R China; [Cao, Hui; Gan, Zhiyin; Lv, Qiang; Liu, Sheng] Huazhong Univ Sci & Technol, Sch Mech Sci & Engn, Wuhan 430074, Peoples R China; [Yan, Han] Huazhong Univ Sci & Technol, Dept Elect Sci & Technol, Wuhan 430074, Peoples R China; [Luo, Xiaobin] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Wuhan 430074, Peoples R China; [Song, Xiaohui] Shanghai Jiao Tong Univ, Res Inst Micronano Sci & Technol, Shanghai 200030, Peoples R China
E-mail Address:
victor_liu63@126.com
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Cited Reference Count:
22
Times Cited:
0
Publisher:
SPRINGER; 233 SPRING ST, NEW YORK, NY 10013 USA
Subject Category:
Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied
ISSN:
0946-7076
DOI:
10.1007/s00542-010-1055-3
IDS Number:
587FN
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