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Because of the segmental specific-heat disparity of the hydrogen bond (O:H-O) and the Coulomb repulsion between oxygen ions, cooling elongates the O:H-O bond at freezing by stretching its containing angle and shortening the H-O bond with an…

Soft Condensed Matter · Physics 2015-01-20 Chang Q. Sun

Water is ubiquitously important but least known. This perspective features the latest finding of two exotic forms of water called quasisolid and supersolid phases due to the cooperativity and disparity of the O:H-O bond in its segmental…

Materials Science · Physics 2024-04-03 CQ Sun

We examined O:H-O bond relaxation under compression,heating,molecular undercoordination and claimed a universal resolution to the best-known mysteries of water ice such as ice foating, ice slipperiness, relegation and warm water cools…

Soft Condensed Matter · Physics 2018-09-06 Yongli Huang , Xi Zhang , Chang Q Sun

Unlike other unusual materials whose bonds contract under compression, the O:H nonbond undergoes contraction and the H-O bond elongation towards O:H and H-O length symmetry in water and ice. The energy drop of the H-O bond dictates the…

Soft Condensed Matter · Physics 2015-01-29 Chang Q Sun

Skins of water and ice share the same attribute of supersolidity characterized by the identical H-O vibration frequency of 3450 cm-1. Molecular undercoordination and inter-electron-pair repulsion shortens the H-O bond and lengthen the O:H…

Chemical Physics · Physics 2014-09-26 Xi Zhang , Yongli Huang , Zengsheng Ma , Yichun Zhou , Weitao Zheng , Ji Zhou , Chang Q. Sun

NaCl solvation turns the fS portion molecules into the hydrating supersolid phase by ionic polarization and leaves the rest fO portion ordinary. Polarization shortens and stiffens the HO bond and does the O:H nonbond contrastingly in the…

Chemical Physics · Physics 2021-09-21 Yanjun Shen , Xin Wei , Yongzhi Wang , Lei Li , Yongli Huang , Chang Q Sun

Hydrogen-bond forms a pair of asymmetric, coupled, H-bridged oscillators with ultra-short-range interactions and memory. hydrogen bond cooperative relaxation and the associated binding electron entrapment and nonbonding electron…

Soft Condensed Matter · Physics 2015-01-16 Chang Q Sun

The elastic, less dense, polarized, and thermally stable supersolid skin lubricates ice. Molecular undercoordination shortens the H-O bond and lengthens the O:H nonbond through O-O repulsion, which is associated with low-frequency and…

Soft Condensed Matter · Physics 2015-02-17 Chang Q. Sun

A sequential of concepts developed in last decade has enabled a resolution to multiple anomalies of water ice and its low-dimensionality, particularly. Developed concepts include the coupled hydrogen bond oscillator pair, segmental specific…

Soft Condensed Matter · Physics 2020-06-17 Chang Q Sun

Consistency between theory predictions and measurements and calculations revealed that the skin of ice, containing water molecules with fewer than four neighbours, forms a supersolid phase that is highly polarized, elastic, hydrophobic,…

Soft Condensed Matter · Physics 2013-10-04 Xi Zhang , Yongli Huang , a Zengsheng Ma , Yichun Zhou , Chang Q Sun

The mysterious nature and functionality of water and ice skins remain baffling to the community since 1859 when Farady firstly proposed liquid skin lubricating ice. Here we show the presence of supersolid phase that covers both water and…

Soft Condensed Matter · Physics 2014-09-26 Chang Q Sun

Here we show that the Coulomb interaction between violations of the Bernal-Fowler rules leads to a temperature induced step-wise increase in their concentration by 6-7 orders of magnitude. This first-order phase transition is accompanied by…

Statistical Mechanics · Physics 2016-08-24 M. I. Ryzhkin , A. V. Klyuev , V. V. Sinitsyn , I. A. Ryzhkin

We derive a phase diagram for amorphous solids and liquid supercooled water and explain why the amorphous solids of water exist in several different forms. Application of large-deviation theory allows us to prepare such phases in computer…

Statistical Mechanics · Physics 2015-06-16 David T Limmer , David Chandler

Compression shortens the O:H nonbond and lengthens the H-O bond simultaneously via O:H-O Coulomb repulsion. The energy loss of the elongated H-O bond lowers the melting point.

Soft Condensed Matter · Physics 2015-09-22 Chang Q. Sun

In this paper we present a new thermodynamically consistent phase transition model describing the evolution of a liquid substance, e.g., water, in a rigid container $\Omega$ when we freeze the container. Since the density $\varrho_{2}$ of…

Analysis of PDEs · Mathematics 2014-01-10 Michel Fremond , Elisabetta Rocca

The structural dynamics of ice in the freezing - thawing process has been studied in the context of the concept of two-phase water. It was previously shown that water is a two-phase system consisting of free and bound (liquid crystal)…

Soft Condensed Matter · Physics 2018-11-21 T. Yakhno , V. Yakhno

The phase diagram of ice is studied by a quasi-harmonic approximation. The free energy of all experimentally known ice phases has been calculated with the flexible q-TIP4P/F model of water. The only exception is the high pressure ice X, in…

Chemical Physics · Physics 2013-10-04 R. Ramirez , N. Neuerburg , C. P. Herrero

Coulomb repulsion between the bonding electron pair in the H-O covalent bond (denoted by "-") and the nonbonding electron pair of O (":") and the specific-heat disparity between the O:H and the H-O segments of the entire hydrogen bond…

Chemical Physics · Physics 2013-10-08 Chang Q. Sun

Water is one of the most abundant substances on Earth, and ice, i.e., solid water, has more than 18 known phases. Normally ice in nature exists only as Ice Ih, Ice Ic, or a stacking disordered mixture of both. Although many theoretical…

Statistical Mechanics · Physics 2022-09-19 Maodong Li , Jun Zhang , Niu Haiyang , Yao Kun Lei , Xu Han , Lijiang Yang , Zhiqiang Ye , Yi Isaac Yang , Yi Qin Gao

We examine ice crystal growth from water vapor at temperatures near the melting point, when surface premelting creates a quasiliquid layer at the solid/vapor interface. Recent ice growth measurements as a function of vapor supersaturation…

Materials Science · Physics 2014-07-04 Kenneth G. Libbrecht
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