Archive

17 posts

Filters: tag: Electric Field Clear

Visualizing radiofrequency electromagnetic field exposure through Voronoi-based maps

Research RF Safe Research Library Jan 1, 2025

This exposure-assessment study proposes a Voronoi-diagram approach to visualize RF-EMF exposure across a city using personal exposimeter measurements of RMS electric field at seed points. Most mapped areas corresponded to about 1.9 V/m, with a maximum reported value of 11.4 V/m, all below the cited ICNIRP guideline…

Dosimetric Electromagnetic Safety of People With Implants: A Neglected Population?

Research RF Safe Research Library Jan 1, 2025

This dosimetric study evaluated whether existing EM safety guidelines protect individuals with conductive implants by assessing implant-related local field enhancements. Across 10 kHz to 1 GHz, the authors report large increases in psSAR10mg and local electric fields near implants, particularly below 100 MHz. In…

Assessment of Electromagnetic Exposure Levels for Humans from Electric Vehicle DC Charging Stations

Research RF Safe Research Library Jan 1, 2025

This simulation study modeled EMF exposure from an electric vehicle DC charging pile transformer using adult and child human models at several distances and for in-vehicle occupants during charging. Reported peak B-field and E-field values at 0.1 m and modeled internal exposures decreased with distance and remained…

Comparison of a radiofrequency electric and magnetic field source-based job-exposure matrix with personal radiofrequency exposure measurements.

Research RF Safe Research Library Jan 1, 2024

This study compared historical occupational RF-EMF exposure estimates from the INTEROCC RF job-exposure matrix (RF-JEM) with recent personal RF-EMF measurements from the OccRF-Health study in two countries. Agreement between the two approaches was poor for both exposure prevalence and 8-hour time-weighted average…

Personal exposure to radiofrequency electromagnetic fields in various occupations in Spain and France.

Research RF Safe Research Library Jan 1, 2023

This study conducted personal full-shift RF-EMF measurements in 333 workers across 46 occupations in Spain and France. Most 1-second measurements of electric and magnetic fields were below the device detection limit (≥1% of 1998 ICNIRP standards), though many workers had at least one detectable reading. A small…

Anthropogenic electromagnetic fields (EMF) influence the behaviour of bottom-dwelling marine species.

Research RF Safe Research Library Jan 1, 2020

This animal study examined behavioural responses of American lobster and Little skate to EMF emissions from a subsea HVDC transmission cable. It reports a marked increase in exploratory/foraging behaviour in skates and a subtler exploratory response in lobsters when exposed to cable EMF. The authors also measured…

Measurement and Modeling of Personal Exposure to the Electric and Magnetic Fields in the Vicinity of High Voltage Power Lines.

Research RF Safe Research Library Jan 1, 2016

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…

Near-field radiofrequency electromagnetic exposure assessment

Research RF Safe Research Library Jan 1, 2015

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…

Toward a Quantitative Understanding of the Electric Field in Thermal Metal Oxidation and a Self-Consistent Wagner Theory.

Research RF Safe Research Library Jan 1, 2014

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…

Extraction of Cations from an Ionic Liquid Droplet in a Dielectric Liquid under Electric Field.

Research RF Safe Research Library Jan 1, 2014

This laboratory study investigates various ionic liquids using an electrophoresis of a charged droplet method in a dielectric liquid under an applied electric field. While charged droplets typically bounce between electrodes, the authors report that some ionic liquids exhibit a retreating behavior. They interpret…

Band gap control using electric field of photonic gel cells fabricated with block copolymer and hydrogel.

Research RF Safe Research Library Jan 1, 2014

This engineering study reports optical and electrical characteristics of photonic gel cells made from a PS-b-P2VP lamellar film and a hydrogel electrolyte on ITO glass. Applying 2 V between two facing electrodes over 30 minutes shifted the device reflectance peak from 538 nm up to 604 nm with limited bandwidth…

Quasiuniversal transient behavior of a nonequilibrium Mott insulator driven by an electric field.

Research RF Safe Research Library Jan 1, 2012

This paper presents a theoretical description of nonequilibrium dynamics in a three-dimensional Fermi-Hubbard model driven by an external electric field. The authors report direction-dependent damping of Bloch oscillations and the emergence of a long-lived transient prethermalized state over a broad range of field…

Electric Field Controlled Self-Assembly of Hierarchically Ordered Membranes.

Research RF Safe Research Library Jan 1, 2012

This in vitro study examined how an externally applied electric field influences the self-assembly of oppositely charged molecules in water into an ordered membrane. The authors report that electric fields changed the kinetics of membrane formation and altered membrane thickness, nanofiber growth orientation, and…

Electric fields on quasiperiodic potentials.

Research RF Safe Research Library Jan 1, 2010

This theoretical condensed-matter study examines how an electric field affects the electronic spectrum and localization in quasiperiodic chains modeled with Harper and Fibonacci potentials. It reports localized ladder spectra under strong fields and smoothing with linearly decreasing gaps under weak fields. When…

The modulation of the de Haas-van Alphen effect in graphene by electric field.

Research RF Safe Research Library Jan 1, 2010

This theoretical/physics paper examines how an in-plane uniform electric field affects the de Haas-van Alphen (dHvA) effect in graphene. It reports that magnetization, magnetic susceptibility, and dHvA oscillation behavior depend on a dimensionless parameter β = E/(vF B), with divergences described at a critical…

Electric field induced structuring in clay-oil suspensions: new insights from WAXS, SEM, leak current, dielectric permittivity, and rheometry.

Research RF Safe Research Library Jan 1, 2010

This laboratory/engineering study examined electric-field-induced structuring in clay-oil suspensions using WAXS, SEM, rheometry, and electrical measurements. Particle orientation was quantified via an orientational order parameter derived from diffraction peak azimuthal changes, and chain versus column formation was…

Microscopic dynamics of the orientation of a hydrated nanoparticle in an electric field.

Research RF Safe Research Library Jan 1, 2009

This paper uses atomistic simulations to examine how a nonpolar nanoparticle suspended in water reorients under an applied electric field. The authors report that molecular-level effects increase the torque relative to continuum estimates and substantially speed up reorientation above a stated field threshold. The…

Page 1 / 1