26 papers · ranked by Valyu relevance
Christopher Leon, Alexander Scheinker
We utilize a Fourier transformation-based representation of Maxwell’s equations to develop physics-constrained neural networks for electrodynamics without gauge ambiguity, which we label the Fourier-Helmholtz-Maxwell neural operator method. In this approach, both of Gauss’s laws and Faraday’s law are built in as hard…
Yanfeng Zhao, Zhiqiang Zheng, Jiaxin Liu, Xinyi Dong + 4 more
'Anping Wu' 'Qing Shi' 'Huaping Wang'] Digital microfluidic chips (DMCs) have shown huge potential for biochemical analysis applications due to their excellent droplet manipulation capabilities. The driving force is a critical factor for characterizing and optimizing the performance of droplet manipulation. Conducting…
Nishant Sule, K. J. Willis, Susan C. Hagness, I. Knežević
We present the implementation and application of a multiphysics simulation technique to carrier dynamics under electromagnetic excitation in supported two-dimensional electronic systems. The technique combines ensemble Monte Carlo (EMC) for carrier transport with finite-difference time-domain (FDTD) for electrodynamics…
J. H. Jeong, Young-Geun Kim, Sungjae Bae, SungWoo Youn
The axion is a hypothetical particle motivated to address the strong CP problem, and is one of the appealing dark matter candidates. Numerous experimental searches for dark matter axions have been proposed relying on their coupling with photons. The classical equations of motion for the axion-photon coupling are well…
Xi Liu, Wenxi Fang, Ken Perlin
Classical neuronal cable theory relies on quasi-static electric field approximations and neglects magnetic induction, Lorentz force coupling, and transient electromagnetic currents, limiting its ability to fully characterize action potential propagation within geometrically branched axons and dendrites. This work…
Dmytro Sydorenko, Igor Kaganovich, Alexander V. Khrabrov, S. Ethier + 2 more
'J. Chen' 'Salomon Janhunen'] A two-dimensional particle-in-cell code for simulation of low-frequency electromagnetic processes in laboratory plasmas has been developed. The code uses the Darwin method omitting the electromagnetic wave propagation. The Darwin method separates the electric field into solenoidal and…
Marek Florkowski
This paper presents original measurement methodology and detection approach to determine the influence of the magnetic field on the partial discharge (PD) dynamics. The application areas refer to insulation systems of both grid and industrial network devices and emerging segments such as high-speed rail, electric…
M. E. Dieckmann
We investigate the collisionless interaction between an electron-positron pair plasma and a magnetized electron-proton plasma using a three-dimensional particle-in-cell simulation. Our aim is to resolve the early stage of the formation of a discontinuity separating the inner cocoon formed by shocked pair plasma from…
Deping Hu, Pengfei Huo
We present a mixed quantum-classical simulation of po- lariton dynamics for molecule-cavity hybrid systems. In particular, we treat the coupled electronic-photonic de- grees of freedom (DOFs) as the quantum subsystem and the nuclear DOFs as the classical subsystem and use the trajectory surface hopping approach to…
Karanpartap Singh, Benjamin G. Hawkins
Electrowetting is an electrokinetic effect whereby an applied electric field induces changes in the measured contact angle at a fluid-surface contact line. On hydrophobic, dielectric electrode surfaces, this effect generates droplet motion termed “electrowetting on dielectric” or EWOD. Applications of this phenomenon…
Wayne Huang, Herman Batelaan
In the past decades, Random Electrodynamics (also called Stochastic Electrodynamics) has been used to study the classical harmonic oscillator immersed in the classical electromagnetic zero-point radiation. Random Electrodynamics (RED) predicts an identical probability distribution for the harmonic oscillator compared…
Christof Baumgärtel, Ray T. Smith, Simon Maher
Computer modelling is widely used in the design of scientific instrumentation for manipulating charged particles, for instance: to evaluate the behaviour of proposed designs, to determine the effects of manufacturing imperfections and to optimise the performance of apparatus. For solenoids, to predict charged particle…
L. Neri, L. Celona
A new plasma heating mechanism for Microwave Discharge Ion Sources (MDIS) was discovered. Unprecedented beam stability was observed during the commissioning of the Proton Source for the European Spallation Source (PS-ESS) where several thousand source configurations were tested using a custom software tool. Data…
Johan Carlsson, Igor Kaganovich, Andrew T. Powis, Yevgeny Raitses + 2 more
'Ivan Romadanov' 'A. I. Smolyakov'] Electrostatic particle‐in‐cell simulations of a Penning discharge are performed in order to investigate azimuthally asymmetric, spoke‐like structures previously observed in experiments. Two‐dimensional simulations show that for Penning‐discharge conditions, a persistent nonlinear…
Arkajit Mandal, Michael Taylor, Braden Weight, Eric Koessler + 2 more
When molecules are coupled to an optical cavity, new light-matter hybrid states, so-called polaritons, are formed due to quantum light-matter interactions. With the experimental demonstrations of modifying chemical reactivities by forming polaritons under strong light-matter interactions, theorists have been encouraged…
Authors not listed
Molecular polaritons are hybrid states formed by the quantum mechanical interaction between light and matter. Recent experiments have shown the ability to drastically modify chemical reactions in both the ground and excited states through the hybridization of the electronic and photonic degrees of freedom. Ab initio…
Authors not listed
Electrified solid-liquid interfaces play a crucial role in energy conversion, storage, photoconversion, sensors, and corrosion processes. While computational chemistry simulations can provide detailed insight into reaction mechanisms, aligning experimental and simulation results remains a significant challenge. In…
Wanghuai Zhou, Deping Hu, Arkajit Mandal, Pengfei Huo
We derive a rigorous nuclear gradient for a molecule-cavity hybrid system using the Quantum Electrodynamics Hamiltonian. We treat the electronic-photonic DOFs as the quantum subsystem, and the nuclei as the classical subsystem. Using the adiabatic basis for the electronic DOF and the Fock basis for the photonic DOF…
Paolo Marracino, Daniel Havelka, Jiří Průša, Micaela Liberti + 4 more
Intense pulsed electric fields are known to act at the cell membrane level and are already being exploited in biomedical and biotechnological applications. However, it is not clear if intra-cellular components such as cytoskeletal proteins could be directly influenced by electric pulses within biomedically-attainable…
Nam Vu, Daniel Mejia-Rodriguez, Nicholas Bauman, Ajay Panyala + 3 more
Polariton chemistry has attracted great attention as a potential route to modify chemical structure, properties, and reactivity through strong interactions between molecular electronic, vibrational, or rovibrational degrees of freedom. A rigorous theoretical treatment of molecular polaritons requires the treatment of…
Feng Bin, Chuanfei Yao, Jixiang Feng, Fangwei Liang + 1 more
Corona discharge is a typical discharge in gas-insulated equipment; however, the correlation between microscopic discharge process and macroscopic electromagnetic (EM) wave signals excited by discharge remains unclear. Therefore, this study innovatively employs the space current pulse as a bridge to reveal their…
J. Skacel, Pietro Parodi, Giuseppe Gangemi, Federico Bariselli + 2 more
The residual atmospheric drag on satellites in Very Low Earth Orbit (VLEO) has been recognized as a limiting factor for satellite lifetimes. This work focuses on one component of the drag, i.e., the ionospheric drag from charged particles, which was observed to influence the overall aerodynamics of satellites. Space…
Joyce Reimer, Sebastián A. Domínguez-Rivera, Joakim Sundnes, Raymond J. Spiteri
The refractory period of cardiac tissue can be quantitatively described using strength-interval (SI) curves. The information captured in SI curves is pertinent to the design of anti-arrhythmic devices including pacemakers and implantable cardioverter defibrillators. As computational cardiac modelling becomes more…
Andrey Akhmeteli
The article contains a review and new results of some mathematical models relevant to the interpretation of quantum mechanics and emulating well-known quantum gauge theories, such as scalar electrodynamics (Klein–Gordon–Maxwell electrodynamics), spinor electrodynamics (Dirac–Maxwell electrodynamics), etc. In these…
Authors not listed
Electrochemiluminescence (ECL) is a vital analytical technique widely used in immunosensing and emerging applica-tions in biological imaging. Traditional ECL simulations rely on finite element methods, which provide valuable insights into reaction dynamics and spatial distribution of species. However, such methods are…
Alice Allen, Michael J. Robertson, Michael C. Payne, Daniel Cole
Molecular mechanics force field parameters for macromolecules, such as proteins, are traditionally fit to reproduce experimental properties of small molecules, and thus they neglect system-specific polarization. In this paper, we introduce a complete protein force field that is designed to be compatible with the…