Archive

This engineering/simulation study evaluates RF applicator concepts for ThermalMR brain tumor heating at 297 MHz (7.0 Tesla) using clinically realistic GBM-based models. EMF simulations compared 10 applicator designs and two SAR-based planning algorithms for small and large target volumes. Power-focused optimization…

This paper describes an on-line ELF magnetic stimulation setup and evaluates coil field distribution using COMSOL simulations alongside physical measurements. The authors report that modeled and measured magnetic flux densities were similar, and that stimulation induced sodium channel currents and fEPSPs in rat…

This study developed a mathematical and computer simulation model to analyze RF-EMF exposure in a human head phantom, motivated by potential therapeutic applications. The modeled exposure used a Yagi-Uda antenna at 64 MHz with SAR 0.6 W/kg and compared field distribution using one versus four antennas. COMSOL Bioheat…

This engineering study investigated RF-induced power deposition near straight insulated leads in an MRI context under different incident electric field profiles. Using 3-D electromagnetic simulations, the authors compared simulation-derived power deposition with implant model predictions. For the setups examined,…

This conference paper describes a peri-implantitis therapy using radio frequency electric current and presents numerical simulations alongside referenced clinical evidence. The abstract reports 81% successful treatment across 66 implants in 46 patients. FEM modeling suggests current preferentially concentrates in…

This conference paper describes the design and simulation of coil geometries intended to produce a highly uniform magnetic field for scleral search coil eye-movement recordings without restricting head motion. The authors built a large (2.2 m per side) coil frame and compared measured magnetic flux density to…

This study reports experimental measurements and numerical modeling of electric and magnetic fields near a high voltage substation in Annaba, Algeria. Field intensities were measured at multiple heights intended to correspond to sensitive human body regions and were validated using finite element simulations. The…

This engineering study evaluates how anatomical/geometric differences affect MRI RF safety metrics. Simulations and a bovine-phantom experiment found that similar transmit B-field patterns can coincide with notably different peak SAR and temperature rise. The authors highlight challenges in using…

This paper presents a near-field RF exposure assessment method comparing standard SAR estimation from E-field measurements in tissue-simulating liquid with a proposed approach based on incident H-field measurements. Experiments were conducted at 900, 1800, and 2450 MHz using dipole antennas and a flat phantom, with…

This engineering/physical chemistry study develops an analytical model and uses computer simulations to describe the electric field in oxide films during thermal metal oxidation. It reports that the electrostatic potential drop across the bulk oxide is often limited to about kBT/e, suggesting most of a larger overall…

This engineering study evaluates a nanoantenna design that combines concentric gold rings with a directivity-enhanced Raman scattering structure. Using finite-difference time-domain simulations and SERS measurements on fabricated devices with thiophenol, the authors report stronger electric field enhancement,…

This engineering/medical physics study used Monte Carlo simulations to examine how a uniform transverse magnetic field affects the dose distribution of a 30 MeV electron beam in a water phantom. The abstract reports substantial changes in depth-dose, including reduced range and a pronounced end-of-range dose peak…

This paper proposes and simulates actively-controlled second harmonic generation in a silicon nitride ring resonator. Quasi-phase matching is induced by a periodic static electric field generated by voltage applied to electrodes along the ring. Simulations report a calculated efficiency of -21.67 dB at 60 mW pump…

This engineering study investigates resonance behavior in diabolo metal bar optical antennas using FDTD numerical simulations and a dipole oscillator model. It reports that narrowing the antenna waist increases optical absorption and near-field enhancement at resonance and produces a red-shift in resonant…

This paper analyzes compressible Hall magnetohydrodynamic turbulence with an external strong guide magnetic field using signed measure analysis. In simulations varying ion skin depth to modulate the Hall term, increasing the Hall term is reported to reduce the fractal dimension of current and vorticity sheets. The…

This study models nematic liquid crystals embedded in random polymer networks, where disorder disrupts long-range order and produces a glassy state. It uses simulations and an Imry-Ma-like analytic approach to visualize domains, predict domain size, and calculate the response to an applied electric field. The authors…

This paper reports the scientific basis and 2D electromagnetic particle-in-cell simulation results for magnetizing an initially unmagnetized plasma using beat-wave current drive. Simulations across different angles between injected waves show beat-wave generation consistent with theoretical predictions and reveal…

This physics study uses analytical calculations and Monte Carlo simulations to determine ground-state structures of monodisperse ferrofluid monolayers under external magnetic fields. It reports structural transitions depending on whether the field is perpendicular or parallel to the monolayer plane, with different…

This paper reports molecular dynamics simulations of polyelectrolyte brushes subjected to external electric fields, focusing on how chain stiffness and salt concentration affect responses. The simulations suggest higher salt concentrations strengthen an induced opposing field from ion redistribution, which resists…

This engineering study describes a handheld microfluidic preconcentrator that uses dielectrophoresis generated by circular microelectrodes with a stepping electric field. Numerical simulations were used to illustrate the electric-field concept. In experiments, HeLa cells were reportedly preconcentrated within 160…

This engineering paper describes low-power wireless sensor nodes and a cluster-based dynamic-tree hierarchical WSN architecture for monitoring historical buildings and wooden artifacts for early pest detection. The authors report simulation and demonstration results indicating improved scalability and reliability…

This methods paper addresses how B0 (main field) and B1 (transmit field) inhomogeneities can bias SPGR and bSSFP steady-state MRI signals used for multicomponent T1/T2 relaxometry and myelin water analysis. It describes using DESPOT1-HIFI to calibrate flip angles and adding a B0-related parameter with multiple…