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Unraveling Nanotubes: Field Emission from an Atomic Wire

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TLDR
Field emission of electrons from individually mounted carbon nanotubes has been found to be dramatically enhanced when the nanotube tips are opened by laser evaporation or oxidative etching, in a process that resembles unraveling the sleeve of a sweater.
Abstract
Field emission of electrons from individually mounted carbon nanotubes has been found to be dramatically enhanced when the nanotube tips are opened by laser evaporation or oxidative etching. Emission currents of 0.1 to 1 microampere were readily obtained at room temperature with bias voltages of less than 80 volts. The emitting structures are concluded to be linear chains of carbon atoms, Cn, (n = 10 to 100), pulled out from the open edges of the graphene wall layers of the nanotube by the force of the electric field, in a process that resembles unraveling the sleeve of a sweater.

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Citations
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Journal ArticleDOI

Carbon Nanotubes--the Route Toward Applications

TL;DR: Many potential applications have been proposed for carbon nanotubes, including conductive and high-strength composites; energy storage and energy conversion devices; sensors; field emission displays and radiation sources; hydrogen storage media; and nanometer-sized semiconductor devices, probes, and interconnects.
Journal ArticleDOI

Crystalline Ropes of Metallic Carbon Nanotubes

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.
Journal ArticleDOI

Nanometre diameter fibres of polymer, produced by electrospinning

TL;DR: More than 20 polymers, including polyethylene oxide, nylon, polyimide, DNA, polyaramid, and polyaniline, have been electrospun in this paper.
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Science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems

Andrea C. Ferrari, +68 more
- 04 Mar 2015 - 
TL;DR: An overview of the key aspects of graphene and related materials, ranging from fundamental research challenges to a variety of applications in a large number of sectors, highlighting the steps necessary to take GRMs from a state of raw potential to a point where they might revolutionize multiple industries are provided.
Journal ArticleDOI

Anomalous thermal conductivity enhancement in nanotube suspensions

TL;DR: In this paper, the authors have produced nanotube-in-oil suspensions and measured their effective thermal conductivity, which is anomalously greater than theoretical predictions and is nonlinear with nanotubes loadings.
References
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Journal ArticleDOI

Self-assembly of tubular fullerenes

TL;DR: In this article, it was shown that carbon nanotubes self-assemble under homogeneous gas-phase conditions of carbon condensation in an inert atmosphere heated to 1200$DGR@C-conditions previously thought to be optimal only for the annealing and growth of C{sub 60} and other spheroidal shells.
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Structure, stability, and fragmentation of small carbon clusters

TL;DR: In this article, the structures and energies of small carbon clusters (Cn, n=2-10) were analyzed and the effects of polarization functions and electron correlation were included in these calculations.
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Structural properties of a carbon-nanotube crystal.

TL;DR: The ordered condensed phase of carbon nanotubes is examined, finding that as the tube diameter varies, the structural properties show a clear transition between two regimes with qualitatively different behavior.
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Large molecules in carbon vapor

TL;DR: In this article, the molecular orbital theory is used in appropriate semi-empirical forms to predict the properties of carbon vapor, and the results indicate that linear polyatomic molecules: C = C =C - - - C = c: are the important species.
Journal ArticleDOI

Growth and sintering of fullerene nanotubes.

TL;DR: A detailed mechanism that features the high electric field at (and field-emission from) open nanotube tips exposed to the arc plasma, and consequent positive feedback effects from the neutral gas and plasma, is proposed for tube growth in such arcs.
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