A Swine Model of Traumatic Brain Injury: Effects of Neuronally Generated Electromagnetic Fields and Electromagnetic Field Stimulation on Traumatic Brain Injury-Related Changes.
Research
RF Safe Research Library
Jan 1, 2023
This animal feasibility study evaluated whether real-time measured, targeted sinusoidal EMF stimulation could normalize traumatic brain injury (TBI)-related changes in neuronally generated EMF patterns. In one Yucatan miniswine with controlled cortical impact, AI modeling distinguished pre-injury, post-injury, and…
Design, simulation and evaluation of uniform magnetic field systems for head-free eye movement recordings with scleral search coils.
Research
RF Safe Research Library
Jan 1, 2016
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…
Enhancement of LIBS emission using antenna-coupled microwave.
Research
RF Safe Research Library
Jan 1, 2013
This engineering study describes using antenna-coupled microwave radiation to enhance laser-induced breakdown spectroscopy (LIBS) emission from a Gd2O3 sample at reduced pressure. The authors report substantially increased plasma emission intensity, higher-temperature plasma, and longer emission lifetime when…
Removal of earth's magnetic field effect on magnetoelastic resonance sensors by an antisymmetric bias field.
Research
RF Safe Research Library
Jan 1, 2012
This engineering study addresses measurement error in magnetoelastic resonance sensors caused by Earth's magnetic field. The authors present an antisymmetric magnetic bias field approach and compare the ribbon response to external perturbation fields against a conventional design. They report a 77% reduction in the…
Dynamic control of adsorption sensitivity for photo-EMF-based ammonia gas sensors using a wireless network.
Research
RF Safe Research Library
Jan 1, 2011
This engineering paper proposes a control method for a photo-electromagnetic field (EMF)-based ammonia gas sensor that uses a wireless network and adjusts illumination light intensity. It reports that measurement error is minimized over 3800 ppm ammonia when the concentration corresponds to an optimal illumination…
Response identification in the extremely low frequency region of an electret condenser microphone.
Research
RF Safe Research Library
Jan 1, 2011
This engineering study describes an experimental setup using a small electret condenser microphone connected to a notebook/PC to detect extremely low frequency signals. Using a small air cell made from a drilled DVD plate with a speaker and microphone on opposite sides, the microphone captured signals in the 0.5–20…
A radiofrequency coil to facilitate B₁⁺ shimming and parallel imaging acceleration in three dimensions at 7 T.
Research
RF Safe Research Library
Jan 1, 2011
This paper reports the development of a 15-channel transmit-receive RF coil for 7 T human brain MRI, using a hybrid decoupling approach to support element placement along three axes. The design is presented as enabling B1+ shimming and parallel imaging acceleration in three dimensions, with reported isolation and…
Position-independent chemical quantitation with passive 13.56-MHz radio frequency identification (RFID) sensors.
Research
RF Safe Research Library
Jan 1, 2008
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…