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Advances in controlled polymerization have enabled the synthesis of mechanically interlocked polymers like molecular knots and linear[n]catenane. These aesthetic macromolecules with unique topological constraints in the form of mechanical…

Soft Condensed Matter · Physics 2026-03-30 Prabeen Kumar Pattnayak , Aloke Kumar , Gaurav Tomar

Recently experiments have shown very significant spin activity in biological molecules such as DNA, proteins, oligopeptides and aminoacids. Such molecules have in common their chiral structure, time reversal symmetry and the absence of…

Mesoscale and Nanoscale Physics · Physics 2020-07-29 Juan Daniel Torres , Raul Hidalgo , Solmar Varela , Ernesto Medina

Pump-push-probe spectroscopy was employed for the exploration of charge-separation processes in organic photovoltaic blends as well as for proton-coupled electron-transfer (PCET) reactions in hydrogen-bonded complexes of…

Chemical Physics · Physics 2025-05-07 Sebastian V. Pios , Maxim F. Gelin , Wolfgang Domcke , Lipeng Chen

The mass storage and removal in solid conductors always played vital role on the technological applications such as modern batteries, permeation membranes and neuronal computations, which were seriously lying on the ion diffusion and…

Materials Science · Physics 2024-07-19 Liang Li , Min Hu , Changlong Hu , Bowen Li , Shanguang Zhao , Guobin Zhang , Liangbin Li , Jun Jiang , Chongwen Zou

Ion transporters in Nature exhibit a wealth of complex transport properties such as voltage gating, activation, and mechanosensitive behavior. When combined, such processes result in advanced ionic machines achieving active ion transport,…

Soft Condensed Matter · Physics 2020-05-08 Laetitia Jubin , Anthony R. Poggioli , Alessandro Siria , Lydéric Bocquet

The high critical superconducting temperatures ($T_c$s) of metal hydride phases with clathrate-like hydrogen networks have generated great interest. Herein, we employ the Density Functional Theory-Chemical Pressure (DFT-CP) method to…

Superconductivity · Physics 2022-05-25 Katerina P. Hilleke , Eva Zurek

We use classical molecular dynamics simulations to study the dynamics of sodium atoms in amorphous Na$_2$O-4SiO$_2$. We find that the sodium trajectories form a well connected network of pockets and channels. Inside these channels the…

Statistical Mechanics · Physics 2009-11-07 Philippe Jund , Walter Kob , Remi Jullien

Systematic first-principles molecular dynamics (MD) simulations with long simulation times (7-13 ps) for phase IV of solid hydrogen using different supercell sizes of 96, 288, 576, and 768 atoms established that the diffusive proton motions…

Materials Science · Physics 2013-12-02 Hanyu Liu , John Tse , Yanming Ma

A novel mechanism for switching a molecular junction based on a proton transfer reaction triggered by an external electrostatic field is proposed. As a specific example to demonstrate the feasibility of the mechanism, the tautomers…

Mesoscale and Nanoscale Physics · Physics 2014-04-18 C. Hofmeister , R. Härtle , O. Rubio-Pons , P. B. Coto , A. L. Sobolewski , M. Thoss

Biological adhesion is a critical mechanical function of complex organisms operating at multiple scales. At the cellular scale, cell-cell adhesion is remarkably tunable to enable both cohesion and malleability during development,…

Soft Condensed Matter · Physics 2022-03-07 Dimitri Kaurin , Pradeep K. Bal , Marino Arroyo

We study the effects of hydrostatic pressure in the range 0.0--2.0 GPa on anion mobility in the orthorhombic $Pnma$ phase of CsPbBr$_{3}$. Using density functional theory and the climbing nudged elastic band method, we calculate the…

Materials Science · Physics 2021-07-14 Thijs J. A. M. Smolders , Alison B. Walker , Matthew J. Wolf

Motivated by the intriguing motility of spirochetes (helically-shaped bacteria that screw through viscous fluids due to the action of internal periplasmic flagella), we examine the fundamental fluid dynamics of superhelices translating and…

Fluid Dynamics · Physics 2009-11-13 Sunghwan Jung , Kathleen Mareck , Lisa Fauci , Michael J. Shelley

Superionic ices with highly mobile protons within the stable oxygen sub-lattice occupy an important proportion of the phase diagram of ice and widely exist in the interior of icy giants and throughout the universe. Understanding the thermal…

Computational Physics · Physics 2023-09-21 Rong Qiu , Qiyu Zeng , Han Wang , Dongdong Kang , Xiaoxiang Yu , Jiayu Dai

We suggest that the DNA molecules could form the cholesteric phase owing to an interaction mediated by the network of the hydrogen bonds (H-network) in the solvent. The model admits of the dependence of the optical activity of the solution…

Soft Condensed Matter · Physics 2009-10-31 V. L. Golo , E. I. Kats , Yu. M. Yevdokimov

Coupled ionic and electronic transport underpins processes as diverse as electrochemical energy conversion, biological signaling, and soft adaptive electronics. Yet, how chemical environments such as pH modulate this coupling at the…

We introduce a description of the collective transverse dynamics of charged (proton) beams in the stability regime by suitable classical stochastic fluctuations. In this scheme, the collective beam dynamics is described by time--reversal…

Statistical Mechanics · Physics 2009-11-10 Nicola Cufaro Petroni , Salvatore De Martino , Silvio De Siena , Fabrizio Illuminati

Studies of liquid water in its supercooled region have led to many insights into the structure and behavior of water. While bulk water freezes at its homogeneous nucleation temperature of approximately 235 K, for protein hydration water,…

Soft Condensed Matter · Physics 2015-03-13 Marco G. Mazza , Kevin Stokely , Sara E. Pagnotta , Fabio Bruni , H. Eugene Stanley , Giancarlo Franzese

In hydrogen bonded systems, nuclear quantum effects such as zero-point motion and tunneling can significantly affect their material properties through underlying physical and chemical processes. Presently, direct observation of the…

In this work, we propose a tool to reveal the origin of the collective-like phenomena observed in proton--proton collisions. We exploit the fundamental difference between the underlying mechanisms, color reconnection (CR) and hydrodynamics,…

High Energy Physics - Phenomenology · Physics 2017-04-27 Antonio Ortiz , Gyula Bencédi , Héctor Bello

The structural, electronic, magnetic, and vibrational properties of LaFeSiH$_x$ for $x$ between 0 and 1 are investigated using density functional calculations. We find that the electronic and magnetic properties are strongly controlled by…

Superconductivity · Physics 2018-06-06 Linda Hung , Taner Yildirim