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A common situation in galactic and intergalactic gas involves cold dense gas in motion relative to hot diffuse gas. Kelvin-Helmholtz instability creates a turbulent mixing layer and populates the intermediate-temperature phase, which often…

Astrophysics of Galaxies · Physics 2020-05-20 Drummond B. Fielding , Eve C. Ostriker , Greg L. Bryan , Adam S. Jermyn

We study the isotope effect on the temperature of the proton order/disorder phase transition between ice XI and ice Ih, using the quasiharmonic approximation combined with \textit{ab initio} density functional theory calculations. We show…

Materials Science · Physics 2015-10-14 Betül Pamuk , Philip B. Allen , M. -V. Fernández-Serra

Convective flows coupled with solidification or melting in water bodies play a major role in shaping geophysical landscapes. Particularly in relation to the global climate warming scenario, it is essential to be able to accurately quantify…

Fluid Dynamics · Physics 2021-03-11 Ziqi Wang , Enrico Calzavarini , Chao Sun , Federico Toschi

A spatially inhomogeneous, trapped two-component Bose-Einstein condensate of cold atoms in the phase separation mode has been numerically simulated. It has been demonstrated for the first time that the surface tension between the components…

Quantum Gases · Physics 2022-01-26 Victor P. Ruban

Polar mesospheric clouds provide clues to physicochemical processes in the mesosphere and lower thermosphere. However, the heterogeneous nucleation and growth processes of water ice under polar mesospheric conditions are poorly understood,…

Earth and Planetary Astrophysics · Physics 2025-07-25 Reo Sato , Kentaro Noguchi , Hiroyuki Koshida , Atsuki Ishibashi , Tetsuya Hama

Although the phase of water has extensively investigated whether there exists a defect distorting only locally the structure still under debate. Here we report a localized 5775 defect phase presented in the double layer ice on the Au (111)…

Materials Science · Physics 2020-09-11 Zhiyuan Zhang , Yu Zhu , Le Jin , Xinrui Yang , Yanchao Wang , Chang Q. Sun , Zhigang Wang

The relationship between glasses and gels has been intensely debated for decades; however, the transition between these two phases remains elusive. To investigate a gel formation process in the zero-temperature limit and its relation to the…

Soft Condensed Matter · Physics 2022-10-27 Masanari Shimada , Norihiro Oyama

We present observations of the formation of plate-like snow crystals that provide evidence for an edge-enhancing crystal growth instability. This instability arises when the condensation coefficient describing the growth of an ice prism…

Materials Science · Physics 2011-11-14 Kenneth G. Libbrecht

In a recent letter [1], Zaitsev et al. report observations of evaporating water micro-droplets over a heated solid substrate and suggest a model for the mechanisms of both droplet levitation and inter-droplet interaction. According to their…

Soft Condensed Matter · Physics 2017-11-09 Alexander Fedorets , Leonid Dombrovsky , Michael Nosonovsky

The structural nature of high-density amorphous ice (HDA), which forms through low-temperature pressure-induced amorphization of the 'ordinary' ice I, is heavily debated. Clarifying this question is not only important for understanding the…

We present a fluid dynamics video which illustrates a kinetic-dominated phase change just prior to solidification inception for a static drop situated on a cold solid substrate. This metastable stage initiated from solid-vapor-liquid…

Fluid Dynamics · Physics 2012-10-16 Faryar Tavakoli , Alen Sarkissians , Pirouz Kavehpour

We characterized the structural and dynamical properties of the quasi-liquid layer (QLL) at the surface of ice by molecular dynamics simulations with a thermodynamically consistent water model. Our simulations show that for three low-index…

Soft Condensed Matter · Physics 2018-12-03 Tanja Kling , Felix Kling , Davide Donadio

Ice naturally forms in the disordered or ``amorphous'' state when accreted from vapor at temperatures and pressures found in the interstellar medium and in the frigid, low density outer regions of the Sun's protoplanetary disk. It is…

Earth and Planetary Astrophysics · Physics 2022-09-14 Dina Prialnik , David Jewitt

The thermal and chemical phases of the cool component of interstellar gas are discussed. Variations with galactocentric radius and from galaxy to galaxy are mostly the result of changes in the ambient interstellar pressure and radiation…

Astrophysics · Physics 2007-05-23 B. Elmegreen

Freezing of water is arguably one of the most common phase transitions on Earth and almost always happens heterogeneously. Despite its importance, we lack a fundamental understanding of what makes substrates efficient ice nucleators. Here…

Chemical Physics · Physics 2017-09-26 Philipp Pedevilla , Martin Fitzner , Angelos Michaelides

Liquid water is not only of obvious importance but also extremely intriguing, displaying many anomalies that still challenge our understanding of such an a priori simple system. The same is true when looking at nanoconfined water: The…

Soft Condensed Matter · Physics 2016-06-29 Jon Zubeltzu , Fabiano Corsetti , M. V. Fernandez-Serra , Emilio Artacho

Almost frictionless skating on ice relies on a thin layer of melted water insulating mechanically the blade of the skate from ice. Using the basic equations of fluid mechanics and Stefan law, we derive a set of two coupled equations for the…

Fluid Dynamics · Physics 2023-07-19 Martine Le Berre , Yves Pomeau

A new phase of ice, named ice XV, has been identified and its structure determined by neutron diffraction. Ice XV is the hydrogen-ordered counterpart of ice VI and is thermodynamically stable at temperatures below ~130 K in the 0.8 to 1.5…

Materials Science · Physics 2015-05-13 Christoph G. Salzmann , Paolo G. Radaelli , Erwin Mayer , John L. Finney

Dissociation of gas hydrates below 240 K leads to the formation of a metastable form of water ice, so called cubic ice (Ic). Through its defective nature and small particle size the surface film composed of such material is incapable of…

Materials Science · Physics 2015-10-28 Andrzej Falenty , Thomas C. Hansen , Werner F. Kuhs

Colloidal particles with strong, short-ranged attractions can form a gel. We simulate this process without and with hydrodynamic interactions (HI), using the lattice-Boltzmann method to account for presence of a thermalized solvent. We show…

Soft Condensed Matter · Physics 2018-12-04 Joost de Graaf , Wilson C. K. Poon , Magnus J. Haughey , Michiel Hermes
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