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We report the discovery of photomolecular effect: cleavage of water clusters off surfaces by photons. This effect is demonstrated through surprising absorption of partially wetted hydrogel in the visible spectrum where both water and…

化学物理 · 物理学 2022-01-26 Yaodong Tu , Jiawei Zhou , Shaoting Lin , Mohammed AlShrah , Xuanhe Zhao , Gang Chen

Absorption imaging and spectroscopy can probe the dynamics of an ultracold neutral plasma during the first few microseconds after its creation. Quantitative analysis of the data, however, is complicated by the inhomogeneous density…

The energetic landscape of charge transfer (CT) states at the interface of electron donating and electron accepting domains in organic optoelectronic devices is crucial for their performance. Central questions -- such as the role of static…

The qualitative solvent- and temperature-dependent conformational behavior of a peptide in the proximity of solid substrates with different adsorption properties is investigated by means of a simple lattice model. The resulting pseudophase…

软凝聚态物质 · 物理学 2007-10-25 Michael Bachmann , Wolfhard Janke

Photoluminescence (PL) is a fundamental light-matter interaction in which absorbed photons are re-emitted, playing a key role in science and engineering. It is commonly modeled by introducing a non-zero chemical potential into Planck's law…

光学 · 物理学 2026-04-22 Tomer Bar Lev , Carmel Rotschild

The x-ray absorption spectra of water and ice are calculated with a many-body approach for electron-hole excitations. The experimental features, including the small effects of temperature change in the liquid, are quantitatively reproduced…

软凝聚态物质 · 物理学 2015-05-14 Wei Chen , Xifan Wu , Roberto Car

Transient absorption spectroscopy is routinely used to study the electron dynamics in plasmonic gold nanoparticles. Typically, the transient absorption bleach is analyzed as measure for the electron temperature. However, the implicitly…

介观与纳米尺度物理 · 物理学 2026-03-30 Nour E. H. Chetoui , Jonas Grumm , Robert Lemke , Andreas Knorr , Holger Lange

This paper describes the accuracy and the errors of water vapour content measurements in the atmosphere using optical methods, especially starphotometer. After the general explanations of the used expressions for the star-magnitude…

大气与海洋物理 · 物理学 2010-10-19 V. D. Galkin , U. Leiterer , G. A. Alekseeva , V. V. Novikov , V. P. Pakhomov

We calculate the optical conductivity in a clean system of quasiparticles coupled to charge-ordering collective modes. The absorption induced by these modes may produce an anomalous frequency and temperature dependence of low-energy optical…

强关联电子 · 物理学 2009-11-11 M. Grilli , S. Caprara , C. Di Castro , D. Suppa

We study the Radiative Transfer equations coupled with the time dependent temperature equation of a fluid: existence, uniqueness, a maximum principle are established. A short numerical section illustrates the pros and cons of the method.

偏微分方程分析 · 数学 2021-12-30 Francois Golse , Olivier Pironneau

This article presents a methodological transition from the conceptually formulated thermographic measurement equation (the so called thermography equation) to its quantitative form, expressed through the optogeometric factor. This factor…

光学 · 物理学 2025-08-18 Jan Sova , Marie Kolaříková

Transmission spectroscopy provides a window to study exoplanetary atmospheres, but that window is fogged by clouds and hazes. Clouds and haze introduce a degeneracy between the strength of gaseous absorption features and planetary physical…

地球与行星天体物理 · 物理学 2017-10-11 Guangwei Fu , Drake Deming , Heather Knutson , Nikku Madhusudhan , Avi Mandell , Jonathan Fraine

General expressions are obtained for the coefficient of light absorption by free carriers as well as the intensity of the spontaneous light emission by hot electrons in multivalley semiconductors. These expressions depend on the electron…

量子物理 · 物理学 2008-11-19 P. M. Tomchuk

We propose a scheme to realize the single-photon transport affected by the temperature. The scheme is composed by a waveguide-atom interacting structure linked to a thermal bath. The single-photon reflection coefficient can be tuned by…

量子物理 · 物理学 2023-08-16 Wei-Bin Yan , Zhong-Xiao Man , Ying-Jie Zhang , Yun-Jie Xia

The determination of the isothermal adsorption curves represents a mechanism that allows ob-taining information on the process of adsorption of water in organic and inorganic materials. In addition, it is a measure to be considered when…

其他定量生物学 · 定量生物学 2021-06-08 Iván David Buitrago-Torres , Javier Torres-Osorio , Elisabeth Restrepo-Parra

A model for the thermodynamics of a quantum heat bath is introduced. Under the assumption that the bath molecules have finitely many degrees of freedom and are weakly interacting, we present a general derivation of the equation of state of…

量子物理 · 物理学 2016-12-12 Dorje C. Brody , Lane P. Hughston

The power spectrum of water optical turbulence is shown to vary with its average temperature $\left\langle T \right\rangle$ and average salinity concentration $\left\langle S \right\rangle$, as well as with light wavelength $\lambda$. This…

大气与海洋物理 · 物理学 2020-10-28 Jinren Yao , Mohammed Elamassie , Olga Korotkova

Measuring the thermal conductivity ($\kappa$) of water at extreme conditions is a challenging task and few experimental data are available. We predict $\kappa$ for temperatures and pressures relevant to the conditions of the Earth mantle,…

材料科学 · 物理学 2023-05-10 Cunzhi Zhang , Marcello Puligheddu , Linfeng Zhang , Roberto Car , Giulia Galli

Luminescence is the phenomenon investigated and applied in many disciplines of science and technique. Spectral and kinetic measurements of luminescence provide much information concerning the mechanism of luminescent devices. Better…

光学 · 物理学 2007-05-23 Eugeniusz Chimczak

Photo-excited carriers, distributed among the localized states of self-assembled quantum dots, often show very anomalous temperature dependent photoluminescence characteristics. The temperature dependence of the peak emission energy may be…

其他凝聚态物理 · 物理学 2009-11-11 Bhavtosh Bansal