Archive

This engineering study used experiments, computer simulations, and simplified analytical calculations to examine how mashed potato dielectric properties and circulating water electrical conductivity affect RF heating at 27 MHz. The authors report that higher circulating water conductivity and higher salt content in…

This in vitro study reports that shortwave (MHz-range) RF exposure can induce strong cytotoxicity in EGFR-overexpressing human cancer cells when those cells have internalized cetuximab-targeted gold nanoparticles. Control nanoparticles showed minimal uptake and substantially lower cytotoxicity under RF exposure. An…

This engineering-focused paper compares carbon nanotube growth in dense low-temperature plasma versus on a substrate surface using hybrid/Monte-Carlo simulations. It reports that plasma parameters strongly influence ion fluxes and nanotube growth kinetics, with large differences in growth rates and fluxes between…

This engineering study addresses interference between induction-heating cookers and an externally coupled transcutaneous energy transmission system for a totally implantable artificial heart. The authors report that magnetic flux from an IH cooker can couple into the TET transformer and affect system performance. A…

This engineering paper introduces an RFID sensor network concept integrating RFID with wireless sensor networks and emphasizes the role of antennas. It discusses coil, dipole, and microstrip antennas and reports designing a microstrip antenna for a wireless temperature monitoring and control system. Measurements are…

This conference paper describes development of new functions for an ICU/CCU remote monitoring system that uses a 3G mobile phone. The authors state that evaluations were performed on several different mobile phones and suggest the system has accuracy and real-time performance suitable for hospital adoption. The…

This engineering study updates a prior (2005) survey on electromagnetic interference (EMI) affecting infusion pumps and extends testing to DECT phones and WiFi terminals. It reports a reduced failure rate for GSM phone exposure compared with 2005 (58% to 30%). The authors report that WiFi and DECT did not pose a real…

This engineering conference paper describes a single access point method for localizing a subject using RF signals from wearable wireless sensors. The approach combines RSSI and LQI measurements from one basestation and applies filtering. The abstract reports that accuracy can approach that of multi-basestation…

This numerical FDTD study modeled RF exposure at 900 and 1800 MHz in tissue containing thin metallic straight wire implants. The model indicates that the wire can substantially increase local SAR, creating high SAR gradients. Despite this, the authors report that exposures below current safe levels resulted in…

This engineering study evaluates whether passive 13.56-MHz RFID-based chemical sensors can quantify analytes reliably despite repositioning errors between the sensor and pickup coil. Using simultaneous measurement of multiple complex-impedance parameters and multivariate statistical analysis, the authors report…

This engineering study reports using radio-frequency (RF)-based dielectric heating to assist NaOH pretreatment of switchgrass to improve enzymatic digestibility. Under the stated conditions, RF-assisted pretreatment produced higher xylose and glucose yields than conventional heating and maintained higher yields at…

This chemistry/engineering study reports the synthesis and NMR/MRI-relevant characterization of a trinuclear Gd(III) chelate intended for high-field MRI contrast applications. Using 17O NMR and proton relaxivity across multiple fields and temperatures, the authors infer bishydration, quantify water exchange and…

This paper describes an exposure and microscopy system designed to continuously observe living cells during exposure to modulated RF-EMF similar to mobile phone signals. Using protocols where the same cells serve as controls before and after exposure, the system was validated with endocytosis measurements. Under 900…

This Level III therapeutic case-control study evaluated shoulder capsule histology after arthroscopic thermal capsulorrhaphy using monopolar radiofrequency energy, with follow-up from 3.5 to 62 months. Mid- and long-term mRFE groups did not differ from controls on several histologic categories (synovial layer, edema,…

This retrospective case series reviewed four resections of symptomatic giant cavernous hepatic hemangiomas using an RF-powered multiarray (Habib sealer) for hepatic parenchymal transection. No blood transfusions were required and no major biliary or vascular injuries were observed at 1-year follow-up; one…

This study measured satellite structures of second- and third-harmonic spectra reflected from solid targets during femtosecond laser–plasma interactions using an optical multi-channel spectrometer. Red-shifted satellite structures of 2ω0 and 3ω0 were observed, and at ~10^18 W/cm^2 the inferred spontaneous magnetic…

This engineering study describes development of a patch antenna array coil (PAAC) intended to address short RF wavelength challenges in ultra-high-field (≥7T) MRI. A prototype PAAC for 7T proton imaging was used to image a monkey brain. The authors report that the imaging demonstrated the coil's utility for…

This paper outlines the development and evaluation of a wireless PDA-based clinical e-portfolio intended to support reflective clinical learning. The tool synchronized wirelessly via cellular signal or Wi-Fi to a web-based portfolio. An evaluation with nurse practitioner and medical students reported positive…