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Here I show that experimental and simulation data on liquid water using vibrational (infrared and Raman) and X-ray (absorption and emission) spectroscopies, as well as recent data from X-ray scattering, are fully consistent with a two-state…

Soft Condensed Matter · Physics 2019-05-09 Lars G. M. Pettersson

We demonstrate for the first time a tight binding model for water incorporating polarizable anions. A novel aspect is that we adopt a "ground up" approach in that properties of the monomer and dimer only are fitted. Subsequently we make…

Materials Science · Physics 2015-05-20 A. T. Paxton , J. J. Kohanoff

The isotope effects in x-ray absorption spectra of liquid water are studied by a many-body approach within electron-hole excitation theory. The molecular structures of both light and heavy water are modeled by path-integral molecular…

Disordered Systems and Neural Networks · Physics 2020-09-29 Chunyi Zhang , Linfeng Zhang , Jianhang Xu , Fujie Tang , Biswajit Santra , Xifan Wu

The so-called thermodynamic anomalies of water form an integral part of the peculiar behaviour of this both important and ubiquitous molecule. In this paper our aim is to establish whether the recently proposed TIP4P/2005 model is capable…

The Infrared Spectrum is used as an experimental data target, to improved the TIP4P/$\epsilon$, adding harmonic potential U(r) in all bonds and harmonic potential U({\theta}) in the angle formed by the hydrogens and oxygen atoms of the…

Chemical Physics · Physics 2020-12-10 Raúl Fuentes-Azcatl

Water evaporation is critically important for hydrogels in open-air applications, but theoretically modeling is difficult due to the complicated intermolecular interactions and sustained deformation. In this work, we construct a simplified…

Soft Condensed Matter · Physics 2025-05-28 Zehua Yu , Yongshun Ren , Kang Liu

We calculate the x-ray absorption spectra of liquid water at ambient conditions and of hexagonal ice close to melting, using a static GW approach that includes approximately local field effects. Quantum dynamics of the nuclei is taken into…

Chemical Physics · Physics 2015-06-04 Lingzhu Kong , Xifan Wu , Roberto Car

We examine five different popular rigid water models (SPC, SPCE, TIP3P, TIP4P and TIP5P) using MD simulations in order to investigate the hydrophobic hydration and interaction of apolar Lennard-Jones solutes as a function of temperature in…

Soft Condensed Matter · Physics 2009-09-29 Dietmar Paschek

Experiments and computer simulations have established that liquid water's surfaces can deviate in important ways from familiar bulk behavior. Even in the simplest case of an air-water interface, distinctive layering, orientational biases,…

Soft Condensed Matter · Physics 2022-07-15 Nathan L. Odendahl , Phillip L. Geissler

It has recently been shown that the TIP4P/Ice model of water can be studied numerically in metastable equilibrium at and below its liquid-liquid critical temperature. We report here simulations along a subcritical isotherm, for which two…

Soft Condensed Matter · Physics 2021-06-02 Riccardo Foffi , John Russo , Francesco Sciortino

Despite great efforts over the past 50 years, the simulation of water still presents significant challenges and open questions. At room temperature and pressure, the collective molecular interactions and dynamics of water molecules may form…

Chemical Physics · Physics 2022-06-22 Riccardo Capelli , Francesco Muniz-Miranda , Giovanni M. Pavan

The main idea of the interstitial-ice model is that liquid water consists of an intact hexagonal lattice with both vacant lattice positions and interstitial water molecules. Narten, Danford and Levy derived the model parameters from the…

Materials Science · Physics 2020-03-05 John De Poorter

We perform ab initio molecular dynamics (AIMD) simulation of liquid water in the canonical ensemble at ambient conditions using the SCAN meta-GGA functional approximation, and carry out systematic comparisons with the results obtained from…

Soft Condensed Matter · Physics 2018-05-14 Lixin Zheng , Mohan Chen , Zhaoru Sun , Hsin-Yu Ko , Biswajit Santra , Pratikkumar Dhuvad , Xifan Wu

The microscopic description of the local structure of water remains an open challenge. Here, we adopt an agnostic approach to understanding water's hydrogen bond network using data harvested from molecular dynamics simulations of an…

Soft Condensed Matter · Physics 2022-04-05 Adu Offei-Danso , Ali Hassanali , Alex Rodriguez

While the water molecule is simple, its condensed phase liquid behavior is so complex that no consensus description has emerged despite three centuries of effort. Here we identify features of its behavior that are the most peculiar, hence…

Chemical Physics · Physics 2014-04-16 Stacey L. Meadley , C. Austen Angell

In a previous work, we investigated a two-dimensional lattice-fluid model, displaying some waterlike thermodynamic anomalies. The model, defined on a triangular lattice, is now extended to aqueous solutions with apolar species. Water…

Soft Condensed Matter · Physics 2009-11-11 C. Buzano , E. De Stefanis , M. Pretti

We investigate the structural similarities between liquid water and 53 ices, including 20 knowncrystalline phases. We base such similarity comparison on the local environments that consist of atoms within a certain cutoff radius of a…

Computational Physics · Physics 2020-06-25 Bartomeu Monserrat , Jan Gerit Brandenburg , Edgar A. Engel , Bingqing Cheng

The local structure of liquid water plays a key role in determining the anomalous properties of water. We run all-atom simulations for three microscopic water models, and use multiple order parameters to analyse the local structure of…

Soft Condensed Matter · Physics 2018-03-14 Cheng Yang , Chuanbiao Zhang , Fangfu Ye , Xin Zhou

We explore the phase diagram of TIP4P-Ew [J. Chem. Phys. {\bf 120}, 9665 (2004)] liquid model water from the boiling-point down to $150 {K}$ at densities ranging from $0.950 {g} {cm}^{-3}$ to $1.355 {g} {cm}^{-3}$. In addition to the…

Statistical Mechanics · Physics 2007-05-23 Dietmar Paschek , Alfons Geiger

The phase diagram of water has been calculated for the TIP4PQ/2005 model, an empirical rigid non-polarisable model. The path integral Monte Carlo technique was used, permitting the incorporation of nuclear quantum effects. The coexistence…

Statistical Mechanics · Physics 2017-04-05 Carl McBride , Eva G. Noya , Juan L. Aragones , Maria M. Conde , Carlos Vega