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Despite its importance in atmospheric science, much remains unknown about the microscopic mechanism of heterogeneous ice nucleation. In this work, we perform hybrid Monte Carlo simulations of the heterogeneous nucleation of ice on a range…

Statistical Mechanics · Physics 2014-08-25 Aleks Reinhardt , Jonathan P. K. Doye

The surface energy is one of the fundamental properties nuclei, appearing in the simplest form of the semi-empirical mass formula. The surface enery has an influence on e.g. the shape of a nucleus and its ability to deform. This in turn…

Nuclear Theory · Physics 2020-04-22 P. D. Stevenson

What makes a material a good ice nucleating agent? Despite the importance of heterogeneous ice nucleation to a variety of fields, from cloud science to microbiology, major gaps in our understanding of this ubiquitous process still prevent…

Chemical Physics · Physics 2016-11-29 Martin Fitzner , Gabriele C Sosso , Stephen J Cox , Angelos Michaelides

Heterogeneous nucleation of a new bulk phase on a flat substrate can be associated with the surface phase transition called wetting transition. When this bulk heterogeneous nucleation occurs on a completely-wettable flat substrate with a…

Soft Condensed Matter · Physics 2015-05-28 Masao Iwamatsu

In simulations of the 2D Ising model, we examine heterogeneous nucleation induced by a small impurity consisting of a line of $l$ fixed spins. As $l$ increases, we identify a limit of stability beyond which the metastable phase is not…

Statistical Mechanics · Physics 2013-04-30 Benjamin Scheifele , Ivan Saika-Voivod , Richard K. Bowles , Peter H. Poole

Heterogeneous nucleation on catalytic surfaces plunged into a fluid is described through a stochastic model. To generate this non-equilibrium process we assume that the turn on of a electrostatic potential triggers a complex dynamics that…

Chemical Physics · Physics 2007-05-23 P. C. T. Dajello , I. Mozolevski , Z. G. S. Kipervaser

The basic physics of nucleation in solid \hl{single-crystal} nanoparticles is revealed by a phase-field theory that includes surface energy, chemical reactions and coherency strain. In contrast to binary fluids, which form arbitrary contact…

Materials Science · Physics 2014-09-17 Daniel A. Cogswell , Martin Z. Bazant

Ice formation is one of the most common and important processes on earth and almost always occurs at the surface of a material. A basic understanding of how the physicochemical properties of a material's surface affect its ability to form…

Materials Science · Physics 2015-06-01 Stephen J. Cox , Shawn M. Kathmann , Ben Slater , Angelos Michaelides

A new simple method for description of the nucleation process on the wide class of heterogeneous centers is given. The nucleation occurs on the heterogeneous centers with different heights of activation barriers. The distribution of the…

Condensed Matter · Physics 2007-05-23 V. Kurasov

One of the most ubiquitous and technologically important phenomena in nature is the nucleation of homogeneous flowing systems. The microscopic effects of shear on a nucleating system are still imperfectly understood, although in recent…

Soft Condensed Matter · Physics 2021-08-11 Amrita Goswami , Jayant K. Singh

We derive the energy of the surface between the normal and superfluid components of a mixed phase of a system composed of two particle species with different densities. The surface energy is obtained by the integration of the free energy…

Superconductivity · Physics 2009-11-11 Heron Caldas

It is widely believed that heterogeneous nucleation occurs without an activation process when the surface is completely wettable. In this report, we review our previous work [J.Chem.Phys {\bf 134}, 234709 (2011)] to show that the critical…

Materials Science · Physics 2013-07-04 Masao Iwamatsu

The microscopic mechanisms controlling heterogeneous ice nucleation are complex and remain poorly understood. Although good ice nucleators are generally believed to match ice lattice and to bind water, counter examples are often identified.…

Chemical Physics · Physics 2015-10-07 Yuanfei Bi , Raffaela Cabriolu , Tianshu Li

The line-tension effects on heterogeneous nucleation are considered when a spherical lens-shaped nucleus is nucleated on top of a spherical substrate and on the bottom of the wall of a spherical cavity. The effect of line tension on the…

Soft Condensed Matter · Physics 2015-03-18 Masao Iwamatsu

We introduce a simple model of heterogeneous catalysis on a disordered surface which consists of two types of randomly distributed sites with different adsorption rates. Disorder can create a reactive steady state in situations where the…

Condensed Matter · Physics 2009-10-28 L. Frachebourg , P. L. Krapivsky , S. Redner

Homogeneous nucleation of a new phase near a second, continuous, transition, is considered. The continuous transition is in the metastable region associated with the first-order phase transition, one of whose coexisting phases is…

Statistical Mechanics · Physics 2009-11-07 Richard P. Sear

The prevalence of heterogeneous nucleation in nature was explained qualitatively by the classical theory for heterogeneous nucleation established over more than 60 years ago, but the quantitative validity and the key conclusions of the…

Chemical Physics · Physics 2015-06-11 Raffaela Cabriolu , Tianshu Li

Line-tension-induced {scenario of heterogeneous nucleation} is studied for a lens-shaped nucleus with a finite contact angle nucleated on a spherical substrate and on the bottom of the wall of a spherical cavity. The effect of line tension…

Soft Condensed Matter · Physics 2015-06-22 Masao Iwamatsu

Nucleation of a new phase almost always starts at a surface. This surface is almost always assumed not to change with time. However, surfaces can roughen, partially dissolve and change chemically with time. Each of these irreversible…

Soft Condensed Matter · Physics 2015-03-25 Richard P. Sear

The homogeneous and heterogeneous nucleation of a Lennard-Jones liquid is investigated using the umbrella sampling method. The free energy cost of forming a nucleating droplet is determined as a function of the quench depth, and the saddle…

Statistical Mechanics · Physics 2007-10-26 Hui Wang , Harvey Gould , W. Klein
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