Results 21 to 30 of about 117,842 (299)

Dynamics of homogeneous nucleation [PDF]

open access: yesThe Journal of Chemical Physics, 2015
The classical nucleation theory for homogeneous nucleation is formulated as a theory for a density fluctuation in a supersaturated gas at a given temperature. But molecular dynamics simulations reveal that it is small cold clusters which initiates the nucleation.
openaire   +4 more sources

The QCD phase transition in the inhomogeneous Universe [PDF]

open access: yes, 2000
We investigate a new mechanism for the cosmological QCD phase transition: inhomogeneous nucleation. The primordial temperature fluctuations, measured to be $\delta T/T \sim 10^{-5}$, are larger than the tiny temperature interval, in which bubbles would ...
Ignatius, J., Schwarz, Dominik J.
core   +2 more sources

Theoretical approaches to nucleation in the gas phase. With a glimpse at experiments and dust formation in astrophysics

open access: yesEPJ Web of Conferences, 2012
An overview of the physics of homogeneous nucleation is presented, focusing on the main theoretical approaches that are currently available. We review the microscopic assumptions behind classical nucleation theory, as well as several improvements with ...
Calvo F., Parneix P.
doaj   +1 more source

Homogeneous ice nucleation in adsorbed water films: a theoretical approach [PDF]

open access: yesAtmospheric Chemistry and Physics
Ice nucleation plays a critical role in cloud formation and atmospheric processes, influencing precipitation and climate. In this study, we present a theoretical approach for describing homogeneous ice nucleation within adsorbed water films on insoluble ...
A. Laaksonen   +4 more
doaj   +1 more source

A Model of Liquid-phase Homogeneous Nucleation in a System Containing Seed Particles [Translated]†

open access: yesKONA Powder and Particle Journal, 2014
This paper deals with particle formation by homogeneous nucleation in a system containing seed particles. A model of homogeneous nucleation previously developed by the present authors (Kousaka and Nomura, 1997) is ...
Yasuo Kousaka   +4 more
doaj   +1 more source

A Novel 2D Model for Freezing Phase Change Simulation during Cryogenic Fracturing Considering Nucleation Characteristics

open access: yesApplied Sciences, 2020
A 2D computational fluid dynamics (CFD) model in consideration of nucleation characteristics (homogeneous/heterogeneous nucleation) using the volume of fluid (VOF) method and Lee model was proposed.
Chengyu Huang, Wenhua Wang, Weizhong Li
doaj   +1 more source

Homogeneous nucleation of silicon

open access: yesJournal of Aerosol Science, 1994
Abstract The homogeneous nucleation of silicon from the SiHCl system was studied theoretically for a wide range of compositions and temperatures. Contour plots of the conversion ratio and the chemical potential to nucleate are displayed. Nucleation rates were calculated using a modified classical nucleation model (Girshick et al. (1990) Aerosol Sci.
Kruis, F.E. (author)   +2 more
openaire   +3 more sources

Homogeneous vs. heterogeneous nucleation in water-dicarboxylic acid systems [PDF]

open access: yesAtmospheric Chemistry and Physics, 2009
Binary heterogeneous nucleation of water-succinic/glutaric/malonic/adipic acid on nanometer-sized particles is investigated within the frame of classical heterogeneous nucleation theory. Homogeneous nucleation is also included for comparison. It is found
A. I. Hienola   +3 more
doaj  

Homogeneous versus Heterogeneous Zeolite Nucleation [PDF]

open access: yesAngewandte Chemie International Edition in English, 1995
Aggregates of fractal dimension were found in the intermediate gel phases that organize prior to nucleation and crystallization (shown right) of silicalite from a homogeneous reaction mixture. Small- and wide-angle X-ray scattering studies prove that for zeolites nucleation may be homogeneous or heterogeneous.
Dokter, W.H.   +4 more
openaire   +1 more source

Bubbling the False Vacuum Away [PDF]

open access: yes, 2007
We investigate the role of nonperturbative, bubble-like inhomogeneities on the decay rate of false-vacuum states in two and three-dimensional scalar field theories.
B. Rogers   +10 more
core   +3 more sources

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