English
Related papers

Related papers: Profiles for voltage-activated currents are multip…

200 papers

Pulsar polarization profiles are very basic database for understanding the emission processes in pulsar magnetosphere. After careful polarization calibration of the 19-beam L-band receiver and verification of beam-offset observation…

High Energy Astrophysical Phenomena · Physics 2023-07-21 P. F. Wang , J. L. Han , J. Xu , C. Wang , Y. Yan , W. C. Jing , W. Q. Su , D. J. Zhou , T. Wang

The Poisson Boltzmann equation is known for its success in describing the Debye layer that arises from the charge separation phenomenon at the silica/water interface. However, by treating only the mobile ionic charges in the liquid, the…

Soft Condensed Matter · Physics 2019-07-30 Maijia Liao , Li Wan , Shixin Xu , Chun Liu , Ping Sheng

Fusion data for $^{16}$O+$^{16}$O are analyzed by coupled-channels calculations. It is shown that the calculated cross sections are sensitive to the couplings to the $2^+$ and $3^-$ excitation channels even at low energies, where these…

Nuclear Theory · Physics 2008-11-26 H. Esbensen

Customized voltage waveforms composed of a number of frequencies and used as the excitation of radio-frequency plasmas can control various plasma parameters such as energy distribution functions, homogeneity of the ionflux or ionization…

The proposed protocol is an attempt to meet the experimentalists' legitimate desire of reliably and easily extracting microscopic parameters from current-voltage measurements on molecular junctions. It applies to junctions wherein charge…

Mesoscale and Nanoscale Physics · Physics 2024-02-27 Ioan Baldea

We demonstrate with computer simulations that anomalous electrokinetic effects, such as ion specificity and non-zero zeta potentials for uncharged surfaces, are generic features of electro-osmotic flow in hydrophobic channels. This behavior…

Soft Condensed Matter · Physics 2009-11-13 David M. Huang , Cecile Cottin-Bizonne , Christophe Ybert , Lyderic Bocquet

Mathematical models of a cellular action potential in cardiac modelling have become increasingly complex, particularly in gating kinetics which control the opening and closing of individual ion channel currents. As cardiac models advance…

Quantitative Methods · Quantitative Biology 2021-04-28 C. Houston , B. Marchand , L. Engelbert , C. D. Cantwell

We quantitatively characterize the metastability in a multi-phase lattice Boltzmann model. The structure factor of density fluctuations is theoretically obtained and numerically verified to a high precision, for all simulated wave-vectors…

Statistical Mechanics · Physics 2022-12-20 Matteo Lulli , Luca Biferale , Giacomo Falcucci , Mauro Sbragaglia , Dong Yang , Xiaowen Shan

Highly polarized components of pulse profiles are investigated by analyzing observational data and simulating the emission processes. The highly polarized components appear at the leading or trailing part of a pulse profile, which…

High Energy Astrophysical Phenomena · Physics 2016-08-29 P. F. Wang , J. L. Han

Single component pseudo-potential lattice Boltzmann model has been widely applied in multiphase simulation due to its simplicity and stability. In many research, it has been claimed that this model can be stable for density ratios larger…

Computational Physics · Physics 2016-06-01 Anjie Hu , Longjian Li , Rizwan Uddin

We analyse recently measured nonlinear photoemission spectra from Ag surfaces that reveal resonances whose energies do not scale with the applied photon energy but stay pinned to multiples of bulk plasmon energy $\hbar\omega_p$ above the…

Materials Science · Physics 2021-05-05 Dino Novko , Vito Despoja , Marcel Reutzel , Andi Li , Hrvoje Petek , Branko Gumhalter

Ion channels are specific proteins present in the membranes of living cells. They control the flow of specific ions through a cell, initiated by an ion channel's electrochemical gradient. In doing so, they control important physiological…

Subcellular Processes · Quantitative Biology 2012-09-14 Andrew Das Arulsamy

Sigmoid semilogarithmic functions with shape of Boltzmann equations, have become extremely popular to describe diverse biological situations. Part of the popularity is due to the easy avail- ability of software which fits Boltzmann…

Quantitative Methods · Quantitative Biology 2017-03-31 Carlos Sevcik

Following our recent numerical study [arXiv:2601.16299 (2026)], we investigate vibrational excitation induced by transient optical driving in molecular ensembles strongly coupled to a cavity mode using the field-driven…

We present further development of a pulsar emission model based on multiple streams diverging away from the magnetic dipole axis, and forming azimuthally-structured fan-shaped beams. It is shown that this geometry, successfully tested on…

Solar and Stellar Astrophysics · Physics 2015-06-23 J. Dyks , B. Rudak

In the study of decays, it is quite common that an unstable quantum state/particle has multiple distinct decay channels. In this case, besides the survival probability $p(t)$, also the probability $w_{i}(t)$ that the decay occurs between…

High Energy Physics - Phenomenology · Physics 2022-12-07 Francesco Giacosa

Potassium (K-) channels catalyze K+ ion permeation across cellular membranes while simultaneously discriminating their permeation over Na+ ions by more than a factor of a thousand. Structural studies show bare K+ ions occupying the…

Biological Physics · Physics 2009-11-13 Sameer Varma , Susan B. Rempe

We develop a mesoscopic approach to model the non-equilibrium behavior of membranes at the cellular scale. Relying on lattice Boltzmann methods, we develop a solution procedure to recover the Nernst-Planck equations and Gauss's law. A…

Mesoscale and Nanoscale Physics · Physics 2023-02-22 James E. McClure , Zhe Li

The spurious currents observed in multiphase flow simulations with pseudo-potential lattice Boltzmann (LB) models are usually understood to be the result of the lack of isotropy of the model-generated interaction force between phases.…

Computational Physics · Physics 2019-08-15 Cheng Peng , Luis F. Ayala , Orlando M. Ayala , Lian-Ping Wang

Here we show, combining a simulation and theoretical study, that electrostatic correlations typical of multivalent ions can reverse the selectivity of a biological nanochannel. Our results provide a physical mechanism for a new,…

Materials Science · Physics 2011-03-03 Marcel Aguilella-Arzo , Carles Calero , Jordi Faraudo