Journal ArticleDOI
Extreme oxygen sensitivity of electronic properties of carbon nanotubes
TLDR
The results, although demonstrating that nanotubes could find use as sensitive chemical gas sensors, likewise indicate that many supposedly intrinsic properties measured on as-prepared nanotube may be severely compromised by extrinsic air exposure effects.Abstract:
The electronic properties of single-walled carbon nanotubes are shown here to be extremely sensitive to the chemical environment. Exposure to air or oxygen dramatically influences the nanotubes' electrical resistance, thermoelectric power, and local density of states, as determined by transport measurements and scanning tunneling spectroscopy. These electronic parameters can be reversibly "tuned" by surprisingly small concentrations of adsorbed gases, and an apparently semiconducting nanotube can be converted into an apparent metal through such exposure. These results, although demonstrating that nanotubes could find use as sensitive chemical gas sensors, likewise indicate that many supposedly intrinsic properties measured on as-prepared nanotubes may be severely compromised by extrinsic air exposure effects.read more
Citations
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Modulating electronic transport properties of carbon nanotubes to improve the thermoelectric power factor via nanoparticle decoration.
TL;DR: It is demonstrated that the thermoelectric power factor can be considerably increased by properly locating the Fermi level of carbon nanotubes with nanoparticles, providing promising opportunities of developing efficient organic thermoeLECTric materials as well as various electronic materials of desired properties.
Journal ArticleDOI
Electrical properties and memory effects of field-effect transistors from networks of single- and double-walled carbon nanotubes.
Antonio Di Bartolomeo,Antonio Di Bartolomeo,M. B. M. Rinzan,Anthony K. Boyd,Yanfei Yang,Liberata Guadagno,Filippo Giubileo,Paola Barbara +7 more
TL;DR: It is shown that charge storage can be improved by limiting exposure of the device to air and water enhanced charge trapping at the SiO(2)/air interface close to the nanotubes is proposed as the dominant mechanism for charge storage.
Journal ArticleDOI
Characterization of metal-modified and vertically-aligned carbon nanotube films for functionally enhanced gas sensor applications
Michele Penza,R. Rossi,Marco Alvisi,M.A. Signore,Gennaro Cassano,D. Dimaio,R. Pentassuglia,Emanuela Piscopiello,Emanuele Serra,Mauro Falconieri +9 more
TL;DR: In this paper, a dense network of bundles of multiple tubes consisting of multi-walled carbon nanostructures appears with a maximum length of 7-10μm and single-tube diameter varying in the range of 5-35nm.
Journal ArticleDOI
Investigation of liquid sensing mechanism of poly(lactic acid)/multi-walled carbon nanotube composite films
TL;DR: In this article, the authors investigated the liquid sensing mechanism of melt-processed poly(lactic acid) (PLA)/multi-walled carbon nanotube (MWNT) composite films for the influence of MWNT loading, solubility parameters of solvents used, solvent transport behaviours, resultant electrical resistance changes, as well as crystallization of the PLA matrix.
Journal ArticleDOI
Atmospheric Oxygen Binding and Hole Doping in Deformed Graphene on a SiO2 Substrate
Sunmin Ryu,Li Liu,Stéphane Berciaud,Young-Jun Yu,Haitao Liu,Philip Kim,George W. Flynn,Louis E. Brus +7 more
TL;DR: In this article, the relationship between structural distortion and electrical hole doping of graphene on a silicon dioxide substrate was studied using micro-Raman spectroscopy and scanning tunneling microscopy.
References
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Journal ArticleDOI
Crystalline Ropes of Metallic Carbon Nanotubes
Andreas Thess,R. S. Lee,Pavel Nikolaev,Hongjie Dai,Pierre Petit,J. Robert,Chunhui Xu,Young Hee Lee,Seong-Gon Kim,Andrew G. Rinzler,Daniel T. Colbert,Gustavo E. Scuseria,David Tománek,John E. Fischer,Richard E. Smalley +14 more
TL;DR: X-ray diffraction and electron microscopy showed that fullerene single-wall nanotubes (SWNTs) are nearly uniform in diameter and that they self-organize into “ropes,” which consist of 100 to 500 SWNTs in a two-dimensional triangular lattice with a lattice constant of 17 angstroms.
Book
Science of fullerenes and carbon nanotubes
TL;DR: In this paper, the authors present a detailed overview of the properties of Fullerenes and their properties in surface science applications, such as scanning tunnel microscopy, growth and fragmentation studies, and chemical synthesis.
Journal ArticleDOI
Storage of hydrogen in single-walled carbon nanotubes
A. C. Dillon,Kim M. Jones,T. A. Bekkedahl,Ching-Hwa Kiang,Donald S. Bethune,Michael J. Heben +5 more
TL;DR: In this article, a gas can condense to high density inside narrow, single-walled nanotubes (SWNTs) under conditions that do not induce adsorption within a standard mesoporous activated carbon.
Journal ArticleDOI
New one-dimensional conductors: Graphitic microtubules.
TL;DR: It is predicted that carbon microtubules exhibit striking variations in electronic transport, from metallic to semiconducting with narrow and moderate band gaps, depending on the diameter of the tubule and on the degree of helical arrangement of the carbon hexagons.
Journal ArticleDOI
Individual single-wall carbon nanotubes as quantum wires
Sander J. Tans,Michel Devoret,Hongjie Dai,Andreas Thess,Richard E. Smalley,L.J. Geerligs,Cees Dekker +6 more
TL;DR: In this article, electrical transport measurements on individual single-wall nanotubes have been performed to confirm the theoretical predictions of single-walled nanotube quantum wires, and they have been shown to act as genuine quantum wires.