Metal Detector Studies: Research Materials

摘要

The purpose of the work described in this report was to develop and characterize phantom materials that mimic the electromagnetic properties of the human body. The materials were characterized from 100 Hz to 10 MHz and over a temperature range of 15 degrees C to 40 degrees C. Such phantoms will aid in the evaluation and assessment of the interaction of medical devices and metal objects or weapons with metal detectors. The materials studied were: (1) a mixture of potassium chloride in water, (2) a mixture of propylene carbonate, ethylene carbonate, and salts, (3) a semi-solid nano-composite material consisting of semi-solid silicone filled with carbon black particles, (4) a mixture of glycine, carrageenan, and potassium chloride in water. The conductiveness of all the materials were analyzed for stability over time and temperature dependence by use of both a conductivity meter and an open-ended coaxial line.