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Detecting and quantifying non-equilibrium activity is essential for studying internally driven assemblies, including synthetic active matter and complex living systems such as cells or tissue. We discuss a non-invasive approach of measuring…

生物物理 · 物理学 2019-05-22 Grzegorz Gradziuk , Federica Mura , Chase P. Broedersz

Molecular communication is an expanding body of research. Recent advances in biology have encouraged using genetically engineered bacteria as the main component in the molecular communication. This has stimulated a new line of research that…

信息论 · 计算机科学 2012-09-13 Arash Einolghozati , Mohsen Sardari , Faramarz Fekr

Unlike isolated beta-cells, which usually produce continuous spikes or fast and irregular bursts, electrically coupled beta-cells are apt to exhibit robust bursting action potentials. We consider the noise induced by thermal fluctuations as…

细胞行为 · 定量生物学 2007-05-23 J. Jo , H. Kang , M. Y. Choi , D. S. Koh

Suspensions of swimming bacteria interact hydrodynamically over long ranges, organizing themselves into collective states that drive large-scale chaotic flows, often referred to as "bacterial turbulence". Despite extensive experimental and…

We demonstrate a technique based on noise measurements which can be utilized to study dynamical processes in protein assembly. Direct visualization of dynamics in membrane protein system such as bacteriorhodopsin (bR) upon photostimulation…

化学物理 · 物理学 2015-05-27 Anshuman. J. Das , Sabyasachi Mukhopadhyay , K. S. Narayan

We generalize the concept of charge regulation of ionic solutions, and apply it to complex fluids with mobile macro-ions having internal non-electrostatic degrees of freedom. The suggested framework provides a convenient tool for…

软凝聚态物质 · 物理学 2018-01-17 Tomer Markovich , David Andelman , Rudi Podgornik

The properties of the fluctuations large enough to induce bifurcations at open chemical systems at steady constraints are studied. The fluctuations that come from the diffusion-induced noise are considered. It is a generic for the surface…

统计力学 · 物理学 2007-05-23 Maria K. Koleva , L. A. Petrov

Large density fluctuations of charged particles are the promising signatures for exploring the QCD phase transition and critical point in heavy ion collisions. These fluctuations are expected to exhibit fractal and scale invariant…

高能物理 - 实验 · 物理学 2026-05-26 Fakhar Ul Haider , Ramni Gupta , Salman Khurshid Malik , Balwan Singh , Zarina Banoo

Charge transport in organic semiconductors is notoriously extremely sensitive to the presence of disorder, both intrinsic and extrinsic, especially for n-type materials. Intrinsic dynamic disorder stems from large thermal fluctuations both…

In charged fluids obeying particle-hole symmetry, such as the Dirac fluid in graphene, charge transport is diffusive despite the presence of ballistically propagating sound waves: sound waves "hydrodynamically decouple" from the slower…

统计力学 · 物理学 2026-01-30 Ewan McCulloch , Romain Vasseur , Sarang Gopalakrishnan

We propose a model for bacterial Quorum Sensing based on an auxiliary electrostatic-like interac-tion originating from a fictitious electrical charge that represents bacteria activity. A cooperative mechanism for charge/activity exchange is…

生物物理 · 物理学 2023-02-22 Eleonora Alfinito , Maura Cesaria , Matteo Beccaria

We present systematic temperature-dependent resistance noise measurements on a series of ferromagnetic Ga$_{1-x}$Mn$_{x}$As epitaxial thin films covering a large parameter space in terms of the Mn content $x$ and other variations regarding…

We study the diffusion of a charged particle in a magnetic field subject to stochastic dichotomous fluctuations. The associated induced electric field gives rise to non-trivial dynamical regimes. In particular, when the mean magnetic field…

无序系统与神经网络 · 物理学 2026-01-21 Gerardo Aquino , Mauro Bologna

The frequency-dependent impedance is a fundamental property of electrical components. We show that it can be determined from the equilibrium dynamical fluctuations of the electrode charge in constant-potential molecular simulations,…

化学物理 · 物理学 2023-03-15 Giovanni Pireddu , Benjamin Rotenberg

Reliable early detection of lithium-ion battery degradation requires health indicators that are physically interpretable and computable from routine cycler telemetry without access to the degradation region. We introduce…

材料科学 · 物理学 2026-05-19 Dieter W. Heermann , Hagen Heermann

The fluctuation spectrum of a quasi-spherical vesicle with active membrane proteins is calculated. The activity of the proteins is modeled as the proteins pushing on their surroundings giving rise to non-local force distributions. Both the…

软凝聚态物质 · 物理学 2009-11-11 Michael A. Lomholt

We present a study investigating the role of mitochondrial variability in generating noise in eukaryotic cells. Noise in cellular physiology plays an important role in many fundamental cellular processes, including transcription,…

We investigate proteins within heterogeneous cell membranes where non-equilibrium phenomena arises from spatial variations in concentration and temperature. We develop simulation methods building on non-equilibrium statistical mechanics to…

软凝聚态物质 · 物理学 2025-08-28 D. Jasuja , P. J. Atzberger

Living organisms are non-equilibrium, fluctuating, dynamic systems containing multi-step biological signaling cascades (BSC) with the ability to transduce changes in the concentration of extracellular molecules such as cytokines into…

分子网络 · 定量生物学 2015-12-09 Tatsuaki Tsuruyama

The cellular milieu is teeming with biochemical nano-machines whose activity is a strong source of correlated non-thermal fluctuations termed active noise. Essential elements of this circuitry are enzymes, catalysts that speed up the rate…

生物物理 · 物理学 2022-03-14 Ashwani Kr. Tripathi , Tamoghna Das , Govind Paneru , Hyuk Kyu Pak , Tsvi Tlusty