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BaCe$_{0.25}$Mn$_{0.75}$O$_{3-\delta}$ (BCM), a non-stoichiometric oxide closely resembling a perovskite crystal structure, has recently emerged as a prospective contender for application in renewable energy harvesting by solar…

Molecular nitrogen is one of the key species in the chemistry of interstellar clouds and protoplanetary disks and the partitioning of nitrogen between N and N2 controls the formation of more complex prebiotic nitrogen-containing species.…

Astrophysics of Galaxies · Physics 2015-06-15 Xiaohu Li , Alan N. Heays , Ruud Visser , Wim Ubachs , Brenton R. Lewis , Stephen T. Gibson , Ewine F. van Dishoeck

Solvent exchange is a controlled process for dilution-induced phase separation. This work utilizes the solvent exchange method to reveal the effect of the mixing dynamics on the asphaltene precipitation process under 20 different mixing…

Fluid Dynamics · Physics 2022-09-02 Jia Meng , Chiranjeevi Kanike , Somasekhara Goud Sontti , Arnab Atta , Xiaoli Tan , Xuehua Zhang

Developing efficient hydrogen storage and conversion technologies is essential for sustainable energy. This study investigates the catalytic potential of a dicalcium nitride (Ca2N) monolayer for hydrogen dissociation using density…

Mesoscale and Nanoscale Physics · Physics 2025-01-28 Gwan Woo Kim , Soonmin Jang , Gunn Kim

We retrieve vertical and meridional variations of methane mole fraction in Titan's lower troposphere by re-analyzing near-infrared ground-based observations from 17 July 2014 UT (Adamkovics et al., 2016). We generate synthetic spectra using…

Earth and Planetary Astrophysics · Physics 2017-02-22 Juan M. Lora , Mate Adamkovics

Parametrizing energy functions for ionic systems can be challenging. Here, the total energy function for an eutectic system consisting of water, SCN$^-$, K$^+$ and acetamide is improved vis-a-vis experimentally measured properties. Given…

Chemical Physics · Physics 2024-10-25 Kai Töpfer , Eric Boittier , Michael Devereux , Andrea Pasti , Peter Hamm , Markus Meuwly

This work demonstrates the development of a strong and ductile medium entropy alloy by employing conventional alloying and thermomechanical processing to induce partial recrystallization (PR) and precipitation strengthening in the…

Materials Science · Physics 2021-09-29 Nithin Baler , Abdulla Samin M , Akshat Godha , Surendra Kumar Makineni

Mildly irradiated mini-Neptunes have densities potentially consistent with them hosting substantial liquid water oceans (`Hycean' planets). The presence of CO2 and simultaneous absence of ammonia (NH3) in their atmospheres has been proposed…

Earth and Planetary Astrophysics · Physics 2024-02-22 Oliver Shorttle , Sean Jordan , Harrison Nicholls , Tim Lichtenberg , Dan J. Bower

The microscopic mechanisms involved in the formation/dissociation of methane hydrate confined at the nanometer scale are unraveled using advanced molecular modeling techniques combined with a mesoscale thermodynamic approach. By means of…

Chemical Physics · Physics 2021-04-28 Dongliang Jin , Benoit Coasne

Novel uses for 2-dimensional materials like graphene and hexagonal boron nitride (h-BN) are being frequently discovered especially for membrane and catalysis applications. Still however, a great deal remains to be understood about the…

Materials Science · Physics 2016-05-25 Yasmine S. Al-Hamdani , Dario Alfè , O. Anatole von Lilienfeld , Angelos Michaelides

To elucidate how land surface state and soil moisture dynamics regulate moist convection, and how convective rainfall subsequently reshapes surface and root-zone hydrology, we develop a stochastic dynamical model that couples soil moisture,…

Atmospheric and Oceanic Physics · Physics 2026-04-10 Elizabeth Cultra , Jun Yin , Mark Bartlett , Amilcare Porporato

We study the relaxation dynamics of photoexcited Fe-II complexes dissolved in water and identify the relaxation pathway which the molecular complex follows in presence of a hydration shell of bound water at the interface between the complex…

Atomic and Molecular Clusters · Physics 2015-06-19 P. Nalbach , A. J. A. Achner , M. Frey , M. Grosser , W. Gawelda , A. Galler , T. Assefa , C. Bressler , M. Thorwart

Liquid-phase exfoliation of two-dimensional materials is very attractive for large-scale applications. Although used extensively, isolating MoS2 layers (<10) with high efficiency is reported to be extremely difficult. Further, the…

Reactive magnesium oxide (MgO)-based cement (RMC) can play a key role in carbon capture processes. However, knowledge on the driving forces that control the degree of carbonation and hydration and rate of reactions in this system remains…

Materials Science · Physics 2022-04-06 Mina Ghane Gardeh , Andrey A. Kistanov , Hoang Nguyen , Hegoi Manzano , Wei Cao , Paivo Kinnunen

The density decreases exponentially with height in the solar gravitationally stratified atmosphere, therefore the collisional coupling between the ionized plasma and the neutrals also decreases. Here, we investigate the role of collisions…

Solar and Stellar Astrophysics · Physics 2023-10-11 B. Popescu Braileanu , R. Keppens

Sr1-xMnxTiO3 (where x = 0.03, 0.05, 0.07 and 0.09) was synthesized via different routes that include solid-state, oxalate precipitation and freeze drying. In oxalate precipitation technique, compositions corresponding to 3 and 5 mol %…

Materials Science · Physics 2012-05-08 K. R. S. Preethi Meher , C. Bogicevic , Pierre-Eymeric Janolin , K. B. R. Varma

Methanol-water liquid mixtures have been investigated by high-energy synchrotron X-ray and neutron diffraction at low temperatures. We are thus able to report the first complete sets of both X-ray and neutron weighted total scattering…

When carbon dioxide (CO2) is injected into an aquifer or a depleted geological reservoir, its dissolution into solution results in acidification of the pore waters. As a consequence, the pore waters become more reactive, which leads to…

High electric fields can significantly alter catalytic environments and the resultant chemical processes. Such fields arise naturally in biological systems but can also be artificially induced through localized excitations at nanoscale.…

Apparent recombination orders exceeding the value of two expected for bimolecular recombination have been reported for organic solar cells in various publications. Two prominent explanations are bimolecular losses with a carrier…

Soft Condensed Matter · Physics 2012-08-23 D. Rauh , C. Deibel , V. Dyakonov