نتایج جستجو برای: c20 fullerene

تعداد نتایج: 6119  

Journal: :Chemistry 2016
Lukas Trombach Sergio Rampino Lai-Sheng Wang Peter Schwerdtfeger

Golden fullerenes have recently been identified by photoelectron spectra by Bulusu et al. [S. Bulusu, X. Li, L.-S. Wang, X. C. Zeng, PNAS 2006, 103, 8326-8330]. These unique triangulations of a sphere are related to fullerene duals having exactly 12 vertices of degree five, and the icosahedral hollow gold cages previously postulated are related to the Goldberg-Coxeter transforms of C20 starting...

Journal: :Physical review letters 2005
Takahiro Yamamoto Kazuyuki Watanabe Satoshi Watanabe

The effect of molecular vibrations on electronic transport is investigated with the smallest fullerene C20 bridge, utilizing the Keldysh nonequilibrium Green's function techniques combined with the tight-binding molecular-dynamics method. Large discontinuous steps appear in the differential conductance when the applied bias voltage matches particular vibrational energies. The magnitude of the s...

In this research 1, 3, 5-triamino-2, 4, 6-trinitrobenzene (TATB) were attached with different nano structures of fullerene with 20, 24 and 60 carbons producing nano structures with diverse molecular weights. Then by the use of density functional theory methods, thermodynamic parameters of TATB with foregoing nanostructures, in wide of temperature, between 300-400 ºK were computed. To this purpo...

2009
B. Czerwinski L. Rzeznik R. Paruch B. J. Garrison Z. Postawa

0168-583X/$ see front matter 2009 Elsevier B.V. doi:10.1016/j.nimb.2009.01.058 * Corresponding author. Fax: +48 12 633 7086. E-mail address: [email protected] (B Molecular dynamics computer simulations have been used to investigate the damage of a benzene crystal induced by 5 keV C20, C60, C120 and C180 fullerene bombardment. The sputtering yield, the mass distributions, and the d...

In this research 1, 3, 5-triamino-2, 4, 6-trinitrobenzene (TATB) were attached with different nano structures of fullerene with 20, 24 and 60 carbons producing nano structures with diverse molecular weights. Then by the use of density functional theory methods, thermodynamic parameters of TATB with foregoing nanostructures, in wide of temperature, between 300-400 ºK were computed. To this purpo...

2008
B. Czerwiński L. Rzeźnik K. Stachura R. Paruch B. J. Garrison Z. Postawa

Molecular dynamics computer simulations have been employed to model ejection of particles from Ag{1 1 1} metal substrate and thin benzene overlayer bombarded by fullerene cluster projectiles. The sputtering yields are analyzed depending on the size (from C20 up to C540) and the kinetic energy (5–20 keV) of a projectile. It has been found that for clean metal substrate bombarded by 15 keV projec...

The substitution reaction of pure, silicon doped and germanium doped fullerenes and tetryl were evaluated computationally at two configurations, in this study. For this purpose, all of the studied structures were optimized geometrically and then IR and NBO calculations were performed on them in the temperature range of 300-400 K at 10˚ intervals. The obtained negative values of Gibbs free energ...

Journal: :Journal of computational chemistry 2015
Rebecca Sure Ralf Tonner Peter Schwerdtfeger

The most stable fullerene structures from C20 to C60 are chosen to study the energetics and geometrical consequences of encapsulating the rare gas elements He, Ne, or Ar inside the fullerene cage using dispersion corrected density functional theory. An exponential increase in stability is found with increasing number of carbon atoms. A similar exponential law is found for the volume expansion o...

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