Systems of atoms with a short-range interaction

Smirnov, Boris M.

doi:10.3367/ufnr.0162.199212b.0097

Cited by 26 publications

(5 citation statements)

References 73 publications

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“…As a typical example of the systems discussed the rare gases (excluding helium) can be considered, whose crystal structure is face-centered cubic (fcc) with close-packed atoms. As shown in Refs [56,57], all the thermodynamic parameters of those systems being expressed in a dimensionless form coincide very closely. The reason is the low sensitivity of thermodynamic characteristics to small differences in the form of the potential VR for atoms of various kinds.…”

Section: Small and Large Clusters In Fullerene Solutionssupporting

confidence: 58%

“…The parameters of this interaction determine the main thermodynamic characteristics of the system. Such structures make up a special class of substances, whose thermodynamic parameters are characterized by common peculiarities [56,57]. Along with rare gas crystals, to this class of structures also belongs crystal fullerite at a temperature exceeding the point of phase transition (260 K) accompanied with disordering of the molecular orientation and defreezing of molecular rotation [34,35].…”

Section: Small and Large Clusters In Fullerene Solutionsmentioning

confidence: 99%

“…These parameters determine in a natural manner the set of dimensionless variables which in turn generates the similarity of thermodynamic functions. Thus, the temperature dependence of the saturated vapor pressure pT for all rare gases is expressed in a unified form [57] as…”

Section: Small and Large Clusters In Fullerene Solutionsmentioning

confidence: 99%

“…The numerical factors in equations (48) ± (50) were obtained as a result of a statistical averaging of the experimental data for rare gases [57]. Other thermodynamic parameters of rare gases, such as the melting and boiling points T m and T b , the densities of crystal r s and liquid r l at those temperatures as well as the bulk modulus, volume and linear thermal expansion coefficients, etc., are determined in a similar way through the natural units of the system.…”

Section: Small and Large Clusters In Fullerene Solutionsmentioning

confidence: 99%

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Fullerenes in solutions

Bezmelnitsyn¹,

Eletskii²,

Okun³

1998

Phys.-Usp.

149

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Phenomena and processes related to the behavior of fullerenes in solutions are reviewed. Data on the solubility of C 60 and C 70 fullerenes in a large number of solvents at various temperatures are presented as well as on diffusion coefficient of fullerenes in solutions. The relation between the factors controlling the behavior of dissolved fullerenes and the clustering tendency they show is analyzed. This tendency, which sets fullerenes apart from other large molecules, underlies many aspects of fullerene behavior in solutions, such as the recently discovered nonmonotone temperature dependence of fullerene solubility in various solvents, the nonlinear concentration dependence of nonlinear optical susceptibility, the sharp dependence of the color of a fullerene solution on the solution composition (the solvatochromatic effect), the concentration dependence of the heat of solution of fullerenes in organic solvents, etc. Growth mechanisms of fractal clusters in fullerene solutions are analyzed along with similarity laws determining the thermodynamic characteristics of fullerite crystals.

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Section: Small and Large Clusters In Fullerene Solutionssupporting

confidence: 58%

Section: Small and Large Clusters In Fullerene Solutionsmentioning

confidence: 99%

Section: Small and Large Clusters In Fullerene Solutionsmentioning

confidence: 99%

Section: Small and Large Clusters In Fullerene Solutionsmentioning

confidence: 99%

See 2 more Smart Citations

Fullerenes in solutions

Bezmelnitsyn¹,

Eletskii²,

Okun³

1998

Phys.-Usp.

149

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“…Change in fullerene crystal structure in equilibrium with solution is reflected on solution properties. [41][42][43] Along with inertgas crystals to the class of structures also belongs crystal fullerite, at a temperature exceeding the point of phase transition (260 K), accompanied with the disordering of molecular orientation and molecular rotation defreezing. As a typical example of discussed systems inert gases (excluding He) are considered, whose crystal structure is FCC with close-packed atoms.…”

Section: Close-packed Crystals and Short-range Intermolecular Interacmentioning

confidence: 99%

Fullerite Crystal Thermodynamic Characteristics and the Law of Corresponding States

Torrens

Castellano²

2010

J. Nanosci. Nanotech.

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The existence of single-wall carbon nanotubes in organic solvents in the form of clusters is discussed. A theory is developed based on a bundlet model, which enables describing the cluster-size distribution function. Comparison of calculated solubilities with experiments would permit obtaining energetic parameters, characterizing the interaction of a nanotube with its surrounding. Fullerenes and nanotubes are objects whose behaviour in many physical situations is characterized by peculiarities, which show up in that these systems represent the only soluble forms of carbon, what is related to their molecular structures. The fullerene molecule is a virtually uniform closed spherical-spheroidal surface and a nanotube is a smooth cylindrical unit. Both structures give rise to weak interactions between the neighbouring units in a crystal and promote their interaction with solvent molecules. The phenomena have a unified explanation in the bundlet model, in which the free energy of a nanotube in a cluster is combined from two components: a volume one proportional to the number of molecules n in a cluster and a surface one proportional to n1/2. Growth mechanisms of fractal clusters in fullerene solutions are analyzed along with similarity laws, determining the thermodynamic characteristics of fullerite crystals. In accordance with the similarity laws, the dimensionless Debye temperatures theta0 for all crystals belonging to the considered class should be close. Temperatures theta0 are determined by a similarity relation from experimental and estimated data. Fullerite theta0 is twice that for inert-gas crystals because, near the Debye point, the fullerite crystal is orientationally ordered so that its structure is dissimilar to face-centred cubic. A fullerene molecule whose thermal rotation is frozen cannot be considered as a spherically symmetric particle. The fulfilment of the similarity laws, which are valuable for particles with spherically symmetric interaction potential, would hardly be expected.

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Elementary Processes in Excited and Ionized Gases

Smirnov

2011

Fundamentals of Ionized Gases

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Systems of atoms with a short-range interaction

Cited by 26 publications

References 73 publications

Fullerenes in solutions

Fullerenes in solutions

Fullerite Crystal Thermodynamic Characteristics and the Law of Corresponding States

Elementary Processes in Excited and Ionized Gases

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