A field emission technique to measure the melting temperature of individual nanometer-sized clusters

Castro, T.; Reifenberger, R.; Choi, E.; Andres, R. P.

doi:10.1016/0039-6028(90)90663-s

Cited by 36 publications

(9 citation statements)

References 16 publications

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“…We consider it likely that a single nanotube does protrude from the rope and will experience an enhanced electric field, in much the same way that the electric field is enhanced over a small nanometer-size protrusion located on a substrate having a larger radius of curvature. 37 This enhancement depends on the distance that an individual nanotube protrudes from the end of the rope and can be estimated if the diameters of the rope and the protruding nanotube are known. Estimates based on the field enhancement for whiskers 38 indicate that a factor of order 2 may result.…”

Section: A Field Emission From a Swnt Ropementioning

confidence: 99%

Electron emission and structural characterization of a rope of single-walled carbon nanotubes

et al. 2000

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The electron emission and structural properties of an isolated ''rope'' comprised of ϳ70 individual singlewalled nanotubes ͑SWNT's͒ were investigated by measuring the field-emission energy distributions and by using field-ion microscopy ͑FIM͒. Field-emission energy distributions, obtained under ultrahigh-vacuum conditions, revealed that the emitting nanotube has a large density of states near the Fermi energy, with an energy distribution of emitted electrons close to that predicted by the free-electron theory. Two small features located on the trailing edge of the energy distributions are attributed to localized features in the density of states of a SWNT. FIM studies were also performed on the same rope in an attempt to provide structural information about the emitting nanotube. Initial FIM micrographs showed an uneven distribution of atoms. Eventually, rings of atoms were imaged. The atom placement around an individual ring structure is analyzed and found to be consistent with that expected from a single ͑19,13͒ SWNT.

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Section: A Field Emission From a Swnt Ropementioning

confidence: 99%

Electron emission and structural characterization of a rope of single-walled carbon nanotubes

et al. 2000

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“…17,18 Experimental evidence of the reduced T m has been demonstrated repeatedly by a variety of techniques. 13,16,[19][20][21] In this work, we measure the optical response of Au particles over a temperature range that includes T m . Microstructural changes are avoided by stabilizing the films in a SiO 2 matrix and performing extended anneals at 900°C prior to taking the measurements such that the heat treatments are fully reversible.…”

Section: ͓S0003-6951͑00͒02252-x͔mentioning

confidence: 99%

Temperature dependence of the surface plasmon resonance of Au/SiO2 nanocomposite films

Dalacu

Martinů

2000

Applied Physics Letters

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Published by the AIP Publishing Articles you may be interested inThe effect of holes in the dispersion relation of propagative surface plasmon modes of nanoperforated semitransparent metallic films J. Appl. Phys. 116, 134306 (2014); 10.1063/1.4897198 In situ optical microspectroscopy approach for the study of metal transport in dielectrics via temperature-and time-dependent plasmonics: Ag nanoparticles in SiO2 films J. Chem. Phys. 134, 054707 (2011); 10.1063/1.3537736 Nonlinear optical properties and surface-plasmon enhanced optical limiting in Ag -Cu nanoclusters co-doped in SiO 2 Sol-Gel films J. Appl. Phys. 96, 6717 (2004); 10.1063/1.1804228 Z-scan determination of the third-order optical nonlinearity of gold:silica nanocomposites

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“…[5][6][7][11][12][13] Experimental evidence of the decrease in T m has been demonstrated by a variety of techniques. 2,[14][15][16][17][18] In addition, the influence of surrounding matrix on T m has been demonstrated, e.g., in our previous work. 19 However, the influence of the interaction between the metal nanoparticles ͑or filling factor of nanocomposite͒ on their melting point is an unstudied problem.…”

Section: Introductionmentioning

confidence: 99%

Influence of interparticle interaction on melting of gold nanoparticles in Au/polytetrafluoroethylene nanocomposites

Yeshchenko

Dmitruk

Grytsenko

et al. 2009

Journal of Applied Physics

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The temperature dependence of the surface plasmon resonance energy and width in 5 nm spherical gold nanoparticles embedded in a polymer polytetrafluoroethylene matrix has been studied using absorption spectroscopy. The jumplike features have been observed in these dependences indicating the melting of gold nanoparticles at temperatures considerably lower than the bulk melting point. The interaction between gold nanoparticles sufficiently affects the melting of nanoparticles. The increase in the filling factor of the particles leads to a decrease in the melting temperature of gold nanoparticles.

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A field emission technique to measure the melting temperature of individual nanometer-sized clusters

Cited by 36 publications

References 16 publications

Electron emission and structural characterization of a rope of single-walled carbon nanotubes

Electron emission and structural characterization of a rope of single-walled carbon nanotubes

Temperature dependence of the surface plasmon resonance of Au/SiO2 nanocomposite films

Influence of interparticle interaction on melting of gold nanoparticles in Au/polytetrafluoroethylene nanocomposites

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