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Core-excitation of water ice releases many different molecules and ions in the gas phase. Studying these desorbed species and the underlying mechanisms can provide useful information on the effects of X-ray irradiation in ice. We report a…

化学物理 · 物理学 2020-10-20 R. Dupuy , G. Féraud , M Bertin , C. Romanzin , L. Philippe , T. Putaud , X. Michaut , R. Cimino , V. Baglin , J. -H. Fillion

The structural properties of additive binary hard-sphere mixtures are addressed as a follow-up of a previous paper [S. Pieprzyk et al., Phys. Rev. E 101, 012117 (2020)]. The so-called rational-function approximation method and an approach…

A comprehensive microscopic understanding of ambient liquid water is a major challenge for $ab$ $initio$ simulations as it simultaneously requires an accurate quantum mechanical description of the underlying potential energy surface (PES)…

化学物理 · 物理学 2019-10-28 Hsin-Yu Ko , Linfeng Zhang , Biswajit Santra , Han Wang , Weinan E , Robert A. DiStasio , Roberto Car

Water ice's remarkable properties make it an important material across a range of disciplines. The combination of covalent and hydrogen bonds form a long-range lattice of oxygens, which hosts a disordered yet correlated hydrogen network. We…

The advent of accelerator-driven free-electron lasers (FEL) has opened new avenues for high-resolution structure determination via diffraction methods that go far beyond conventional x-ray crystallography methods. These techniques rely on…

First-principles molecular dynamics simulations based on density-functional theory and the projector augmented wave (PAW) technique have been used to study the structural and dynamical properties of liquid iron under Earth's core…

凝聚态物理 · 物理学 2009-10-31 D. Alfe` , G. Kresse , M. J. Gillan

We model, simulate, and analyze the intramolecular modes of liquid H2O and D2O to elucidate how energy excitation, relaxation, and vibrational dephasing interplay through anharmonic mode-mode coupling. Our analysis employs two-dimensional…

化学物理 · 物理学 2026-03-20 Kwanghee Park , Ryotaro Hoshino , Yoshitaka Tanimura

Infrared pump-probe spectroscopy provides detailed information on the dynamics of hydrogen-bonded liquids. Due to dissipation of the absorbed pump pulse energy, also thermal equilibration dynamics contributes to the observed signal.…

化学物理 · 物理学 2019-06-05 Riccardo Dettori , Michele Ceriotti , Johannes Hunger , Luciano Colombo , Davide Donadio

A moderately intense $450$ fs laser pulse is used to create rotational wave packets in gas phase $\rm{I_2}$ molecules. The ensuing time-dependent alignment, measured by Coulomb explosion imaging with a delayed probe pulse, exhibits the…

The formation of iterated structures, such as satellite and sub-satellite drops, filaments and bubbles, is a common feature in interfacial hydrodynamics. Here we undertake a computational and theoretical study of their origin in the case of…

流体动力学 · 物理学 2018-01-24 Michael C. Dallaston , Marco A. Fontelos , Dmitri Tseluiko , Serafim Kalliadasis

This letter investigates the performance of emerging wireless communication systems assisted by a fluid reconfigurable intelligent surface (FRIS). Unlike conventional reconfigurable intelligent surfaces (RISs), an FRIS consists of…

Here we report the first evidence for a reversible phase change in an ethanethiol ice prepared under astrochemical conditions. InfraRed (IR) spectroscopy was used to monitor the morphology of the ice using the S-H stretching vibration, a…

材料科学 · 物理学 2017-03-08 S Pavithraa , R Rajan , P Gorai , J -I Lo , A Das , B N Raja Sekhar , T Pradeep , B -M Cheng , N J Mason , B Sivaraman

Understanding the hydration and diffusion of ions in water at the molecular level is a topic of widespread importance. The ammonium ion (NH$_4^+$) is an exemplar system that has received attention for decades because of its complex…

计算物理 · 物理学 2025-01-14 Jianqing Guo , Liying Zhou , Andrea Zen , Angelos Michaelides , Xifan Wu , Enge Wang , Limei Xu , Ji Chen

Fluids under extreme confinement exhibit unique structures and intermolecular bonding, distinct from their bulk analogs, driving innovative applications at the water-energy nexus. Probing confined water experimentally at the length scale of…

The integrated Sachs-Wolfe (ISW) effect describes how photons are gravitationally redshifted, producing anisotropies in the Cosmic Microwave Background. We study the inverse problem and show that primordial gravitational perturbations, in…

广义相对论与量子宇宙学 · 物理学 2025-10-29 Yiran Wang

An optically-induced thermal non-linear effect in a nematic liquid-crystal (E7) cell is evidenced through weak light-absorption by the ITO coating of an infrared pulsed femtosecond laser (m). Strong spatial self-phase modulation is…

New solar wind data from the Voyager 1 and Voyager 2 spacecraft, together with the SOHO SWAN measurements of the direction that neutral hydrogen enters into the inner heliosheath and neutral helium measurements provided by multiple…

天体物理学 · 物理学 2009-11-13 Nikolai V. Pogorelov , Jacob Heerikhuisen , Gary P. Zank

A large anomalous Hall effect (AHE) has been observed in ferromagnetic $\textrm{Fe}_3\textrm{Sn}_2$ with breathing kagome bilayers. To understand the underlying mechanism for this, we investigate the electronic structure of…

Context: Existing SWAS observations and future HIFI/Herschel data require a clear sense of the information content of water emission and absorption lines. Aims: Investigate wether the ground-state transition of ortho-H2O, 1_(10)-1_(01), at…

天体物理学 · 物理学 2009-11-11 D. R. Poelman , M. Spaans , A. G. G. M. Tielens

Solid-water interfaces are crucial to many physical and chemical processes and are extensively studied using surface-specific sum-frequency generation (SFG) spectroscopy. To establish clear correlations between specific spectral signatures…

材料科学 · 物理学 2024-09-26 Xianglong Du , Weizhi Shao , Chenglong Bao , Linfeng Zhang , Jun Cheng , Fujie Tang