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This study of adsorption of normal alkanols at the oil/water interface with x-ray reflectivity and tensiometry demonstrates that the liquid to gas monolayer phase transition at the hexane/water interface is thermodynamically favorable only…

Soft Condensed Matter · Physics 2009-11-13 Aleksey M. Tikhonov , Mark L. Schlossman

Determination of the volume content of ethanol in the alcohol products in practice is usually determined by pycnometry, electronic densimetry, or densimetry using a hydrostatic balance in accordance with Commission Regulation No 2870/2000.…

Chemical Physics · Physics 2014-01-23 Siarhei Charapitsa , Nikita Kulevich , Svetlana Sytova , Yurii Yakuba

The heterogeneity of the viscoelasticity of a lamellar gel network based on cetyl-trimethylammonium chloride (CTAC) and ceto-stearyl alcohol was studied using particle tracking microrheology. A recurrent neural network (RNN) architecture…

Soft Condensed Matter · Physics 2023-11-21 Owen Watts Moore , Conor Lewis , Thomas Ross , Thomas Andrew Waigh , Nickolay Korabel , Cesar Mendoza

We investigate the relaxation mechanism of a supercooled tetrahedral liquid at its limit of stability using isothermal isobaric ($NPT$) Monte Carlo (MC) simulations. In similarity with systems which are far from equilibrium but near the…

Statistical Mechanics · Physics 2017-09-06 Arvind Kumar Gautam , Nandlal Pingua , Aashish Goyal , Pankaj A. Apte

Although common in nature, the self-assembly of small molecules at sold-liquid interfaces is difficult to control in artificial systems. The high mobility of dissolved small molecules limits their residence at the interface, typically…

The linear stability analysis of an optically thin plasma where a general reaction proceeds, including chemical relaxation time effects, is carried out . A fifth order dispersion equation (instead of the fourth order one resulting when such…

Astrophysics · Physics 2007-05-23 Miguel H. Iba~nez S.

We investigate the steady states and dynamical instabilities resulting from ``particles'' depositing on (fusion) and pinching off (fission) a fluid membrane. These particles could be either small lipid vesicles or isolated proteins. In the…

Soft Condensed Matter · Physics 2009-10-31 Madan Rao , Sarasij R C

Motivated by the aim of understanding the effect of media heterogeneity on the swimming dynamics of flagellated bacteria, we study the rotation and swimming of rigid helices in dilute suspensions experimentally and theoretically. We first…

Fluid Dynamics · Physics 2024-11-27 Albane Théry , Andres Zambrano , Eric Lauga , Roberto Zenit

Water hydrating phospholipid membranes determine their stability and function, as well as their interaction with other molecules. In this article we study, using all-atom molecular dynamics simulations, the rotational and translational…

Soft Condensed Matter · Physics 2016-05-25 Carles Calero , H. Eugene Stanley , Giancarlo Franzese

We investigate the microscopic origin of water's anomalies by inspecting the hydrogen bond network (HBN) and the spatial organization of low-density-liquid (LDL) like and high-density-liquid (HDL) like environments. Specifically, we…

Chemical Physics · Physics 2019-03-27 Fausto Martelli

Drug efficacy depends on its capacity to permeate across the cell membrane. We consider the prediction of passive drug-membrane permeability coefficients. Beyond the widely recognized correlation with hydrophobicity, we additionally…

Chemical Physics · Physics 2021-06-30 Arghya Dutta , Jilles Vreeken , Luca M. Ghiringhelli , Tristan Bereau

The impact of hydrostatic pressure up to 1.2 GPa on the critical current density (Jc) and the nature of the pinning mechanism in MgB2 have been investigated within the framework of the collective theory. We found that the hydrostatic…

Superconductivity · Physics 2015-03-17 Babar Shabbir , Xiaolin Wang , S. R. Ghorbani , Shixue Dou

Many lipid membrane-mediated transport processes--such as mechanically-gated channel activation and solute transport--involve structural and dynamical features on membrane thickness length scales. Most existing membrane models, however,…

Soft Condensed Matter · Physics 2025-08-29 Zachary G. Lipel , Yannick A. D. Omar , Dimitrios Fraggedakis

The recently discovered twist-bend nematic phase, $\rm N_{tb}$, is a non-uniform equilibrium nematic phase that presents a spontaneous bend with a precession of the nematic director, $\textbf{n}$, on a conical helix with a tilt angle…

We report an investigation of the heterogeneity in super-cooled liquids and glasses using the non-Gaussianity parameter. We simulate selenium and a binary Lennard-Jones system by molecular dynamics. In the non-Gaussianity three time domains…

Disordered Systems and Neural Networks · Physics 2007-05-23 D. Caprion , J. Matsui , H. R. Schober

It has been considered that the effective bending rigidity of fluid membranes should be reduced by thermal undulations. However, recent thorough investigation by Pinnow and Helfrich revealed significance of measure factors for the partition…

Condensed Matter · Physics 2009-11-07 Yoshihiro Nishiyama

We previously developed a neurocomputational model called the reward-attention circuit, which has been used to investigate the separate effects of nicotine and alcohol on attention focus. The model is based on known circuits linking…

Neurons and Cognition · Quantitative Biology 2024-02-06 Karine Guimarães

Using a neural network potential (ANI-1ccx) generated from quantum data on a large data set of molecules and pairs of molecules, isothermal, constant volume simulations demonstrate that the model can be as accurate as ab initio molecular…

Chemical Physics · Physics 2021-01-11 Alexander S. Lyons, , Steven W. Rick

Uncovering the rules governing the nonequilibrium dynamics of the membranes that define biological cells is of central importance to understanding the physics of living systems. We theoretically and computationally investigate the behavior…

Anesthetic agents are known to induce a range of alterations in cortical electrophysiological activity, such as the rise of signature patterns, changes in statistical properties, and altered dynamic behavior of neural records. Plenty of…

Neurons and Cognition · Quantitative Biology 2023-09-06 Eduardo Cocca Padovani