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Diethyl(methyl)(isobutyl)phosphonium hexafluorophosphate, [PF$_6$][P$_{1,2,2,4}$], is an organic ionic plastic crystal with potential uses as a solid electrolyte in storage and light harvesting devices. In this work we present a molecular…

化学物理 · 物理学 2013-11-26 Marcelo A. Carignano

Perovskite metal-organic frameworks (MOFs) have recently emerged as potential candidates for multiferroicity. However, the compounds synthesized so far possess only weak ferromagnetism and low polarization. Additionally, the very low…

材料科学 · 物理学 2018-01-24 Paresh Chandra Rout , Varadharajan Srinivasan

Using molecular dynamics simulations of a tangent-soft-sphere bead-spring polymer model, we examine the degree to which semiflexible polymer melts solidify at isostaticity. Flexible and stiff chains crystallize when they are isostatic as…

软凝聚态物质 · 物理学 2017-07-21 Christian O. Plaza-Rivera , Hong T. Nguyen , Robert S. Hoy

Metal-organic frameworks show both fundamental interest and great promise for applications in adsorption-based technologies, such as the separation and storage of gases. The flexibility and complexity of the molecular scaffold poses a…

Perovskite materials have become ubiquitous in many technologically relevant applications, ranging from catalysts in solid oxide fuel cells to light absorbing layers in solar photovoltaics. The thermodynamic phase stability is a key…

材料科学 · 物理学 2018-06-05 Wei Li , Ryan Jacobs , Dane Morgan

We report a workflow and the output of a natural language processing (NLP)-based procedure to mine the extant metal-organic framework (MOF) literature describing structurally characterized MOFs and their solvent removal and thermal…

材料科学 · 物理学 2021-09-17 A. Nandy , G. Terrones , N. Arunachalam , C. Duan , D. W. Kastner , H. J. Kulik

SiC polytypes have been studied for decades, both experimentally and with atomistic simulations, yet no consensus has been reached on the factors that determine their stability and growth. Proposed governing factors are…

Density-functional simulations are used to calculate structural properties and high-symmetry phonons of the hypothetical cubic phase, the stable orthorhombic phase and an intermediate tetragonal phase of magnesium silicate perovskite. We…

mtrl-th · 物理学 2016-09-07 M. C. Warren , G. J. Ackland

The coexistence of different ferroelectric phases enables the tunability of the macroscopic properties and extensive applications from piezoelectric transducers to nonvolatile memories. Here we develop a thermodynamic model to predict the…

材料科学 · 物理学 2022-01-26 Yang Zhang , Fei Xue , Bo Wang , Jia-Mian Hu , Shuai Dong , Jun-Ming Liu , Long-Qing Chen

Effects of pressure and temperature on structural and thermodynamic properties of ice VII have been studied by using path-integral molecular dynamics (PIMD) simulations. Temperatures between 25 and 450 K, as well as pressures up to 12 GPa…

化学物理 · 物理学 2015-11-30 Carlos P. Herrero , Rafael Ramirez

Designing metal-organic frameworks (MOFs) synthesis protocols is currently largely driven by trial-and-error, since we lack fundamental understanding of the molecular level mechanisms that underlie their self-assembly processes. Previous…

材料科学 · 物理学 2025-12-04 Sahar Andarzi Gargari , Emilio Méndez , Rocio Semino

This study investigates the molecular-level self-assembly behavior of seven functionalized diamondoids, examining how diverse substituents influence structural organization, thermal stability, and aggregate morphology. Using a combination…

介观与纳米尺度物理 · 物理学 2024-12-13 Sonam Phuntsho

We study the thermodynamic stability at low temperatures of a series of alkali metal/zinc double-cation borohydrides, including LiZn(BH$_4$)$_3$, LiZn$_2$(BH$_4$)$_5$, NaZn(BH$_4$)$_3$, NaZn$_2$(BH$_4$)$_5$, KZn(BH$_4$)$_3$, and…

Based on density functional calculations, we propose that ZrMn_2 is a polymorphic material. We predict that at low temperatures the cubic C15, and the hexagonal C14 and C36 structures of the Laves phase compound ZrMn_2 are nearly equally…

材料科学 · 物理学 2009-11-10 Xing-Qiu Chen , W. Wolf , R. Podloucky , P. Rogl , M. Marsman

Recent years have seen a large increase in the number of reported framework materials, including the nowadays-ubiquitous metal-organic frameworks (MOFs). Many of these materials show flexibility and stimuli-responsiveness, i.e. their…

材料科学 · 物理学 2019-07-11 François-Xavier Coudert

Using very long molecular dynamics simulation runs, temperature protocols spanning up to five orders of magnitude in time-scales are performed to investigate thermally activated structural relaxation in a model amorphous solid. The…

材料科学 · 物理学 2017-10-11 P. M. Derlet , R. Maass

The spinodal instabilities in hot asymmetric nuclear matter and some important critical parameters derived thereof are studied using six different families of relativistic mean-field (RMF) models. The slopes of the symmetry energy…

核理论 · 物理学 2017-05-31 N. Alam , H. Pais , C. Providência , B. K. Agrawal

Controlling thermal expansion is an important, not yet resolved, and challenging problem in materials research. A conceptual design is introduced here for the first time, for the use of MOFs as platforms for controlling thermal expansion…

Thermal fluctuations of microtubules (MTs) and other cytoskeletal filaments govern to a great extent the complex rheological properties of the cytoskeleton in eukaryotic cells. In recent years, much effort has been put into capturing the…

软凝聚态物质 · 物理学 2011-10-26 Sander L. Poelert , Harrie H. Weinans , Amir A. Zadpoor

Possible variations in the dynamical behaviour of LiYF$_{4}$ due to its structural changes following several pressure-induced phase transitions are examined by making use of the complementary techniques of quasi-harmonic lattice dynamics…

材料科学 · 物理学 2007-05-23 A. Sen , S. L. Chaplot , R. Mittal