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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Effect of Water Vapor on Electrical Properties of Individual Reduced Graphene Oxide Sheets
TL;DR: In this paper, the electrical conductivity and gas-sensing characteristics of individual sheets of partially reduced graphene oxide are studied, and the results display a strong dependence on the chosen reduction method.
Journal ArticleDOI
Multilayered carbon nanotube/polymer composite based thermoelectric fabrics.
TL;DR: Since these fabrics have the potential to be cheaper, lighter, and more easily processed than the commonly used thermoelectric bismuth telluride, the overall performance of the fabric shows promise as a realistic alternative in a number of applications such as portable lightweight electronics.
Journal ArticleDOI
Nernst limit in dual-gated Si-nanowire FET sensors.
Oren Knopfmacher,Alexey Tarasov,Wangyang Fu,Mathias Wipf,Bjoern Niesen,Michel Calame,Christian Schönenberger +6 more
TL;DR: It is demonstrated that the apparent sensitivity of a dual-gated silicon nanowire FET to pH can go beyond the Nernst limit of 60 mV/pH at room temperature.
Journal ArticleDOI
Hydrogen Sensing Using Pd‐Functionalized Multi‐Layer Graphene Nanoribbon Networks
TL;DR: This work presents Hydrogen Sensing Using Pd-Functionalized Multi-Layer Graphene Nanoribbon Networks U N IC, a novel approach to chemical gas sensors based on nanoscale materials that has attracted research attention due to their naturally small size and large surface-to-volume ratio.
Journal ArticleDOI
Alcohol Vapor Sensors Based on Single-Walled Carbon Nanotube Field Effect Transistors
TL;DR: In this article, the authors measured conductance of single-walled semiconducting carbon nanotubes in field effect transistor (FET) geometry and investigated the device response to alcoholic vapors.
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.