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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Journal ArticleDOI
NO2 Detection Using Microcantilever Based Potentiometry
Muhammad Qazi,Goutam Koley +1 more
TL;DR: A highly sensitive and novel sensor platform for gases and volatile chemicals using microcantilever based potentiometry is reported, and it was observed that nanostructured graphite (NG) shows much higher sensitivity and lower response time than transition metal oxides.
Journal ArticleDOI
Effect of oxygen chemisorption on the energy band gap of a chiral semiconducting single-walled carbon nanotube
TL;DR: In this article, the effect of oxygen chemisorption on the band gap of both a zigzag (10,0) and a chiral (8,4) single-walled carbon nanotube (SWNT) was investigated by means of density functional theory.
Journal ArticleDOI
Adsorption of molecular oxygen on VIIIB transition metal-doped graphene: A DFT study
F. Nasehnia,Majid Seifi +1 more
TL;DR: In this article, the effect of molecular oxygen adsorption on transition metal-doped graphene structures can alter the possibility of using these materials as a toxic gas (carbon monoxide, hydrogen fluoride, etc.) sensor.
Journal ArticleDOI
Controlled Ohmic and nonlinear electrical transport in inkjet-printed single-wall carbon nanotube films
Tero Mustonen,Jani Mäklin,Krisztian Kordas,Niina Halonen,Geza Toth,S. Saukko,J. Vähäkangas,Heli Jantunen,Swastik Kar,Pulickel M. Ajayan,Pulickel M. Ajayan,Robert Vajtai,Panu Helistö,Heikki Seppä,Hannu Moilanen +14 more
TL;DR: In this article, the authors present the fabrication and characterization of logic elements (transistors and interconnects) built using their recently developed inkjet-printer-controlled deposition of single-wall carbon nanotube network films.
Journal ArticleDOI
Aqueous dispersion, surface thiolation, and direct self-assembly of carbon nanotubes on gold.
TL;DR: The efficient aqueous dispersion of pristine HiPco single-walled carbon nanotube material with ionic liquid (IL)-based surfactants with 1-dodecyl-3-methylimidazolium bromide and 2 leads to a high degree of purification from carbonaceous particles and produces water-soluble, positively charged nanotubes with pendent surface-active thiol groups.
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.