Schuderer Jürgen, Schmid Thomas, Urban Gerald, Samaras Theodoros, Kuster Niels
Foundation for Research on Information Technologies in Society, Integrated Systems Laboratory IIS, Swiss Federal Institute of Technology (ETH), CH-8092 Zurich, Switzerland.
Phys Med Biol. 2004 Mar 21;49(6):N83-92. doi: 10.1088/0031-9155/49/6/n04.
A novel integrated thermistor probe for temperature evaluations in radiofrequency-heated environments was realized. The probe's sensitive area is based on a highly resistive 50 microm x 100 microm layer of amorphous germanium processed on a glass tip. The small dimensions allow measurements with a distance as close as 150 microm from solid boundaries. Due to its high temperature resolution of 4 mK and its short response time of the order of 10 ms, the sensor is very well suited for dosimetric measurements in strong absorption gradients. The influence of radiofrequency (RF) electric fields on the signal is minimized due to the high resistance of the sensor and the leads. The probe was successfully used to determine the highly nonuniform absorption distribution resulting from the RF exposure of cell cultures placed in Petri dishes.
实现了一种用于在射频加热环境中进行温度评估的新型集成热敏电阻探头。该探头的敏感区域基于在玻璃尖端上加工的高电阻50微米×100微米的非晶锗层。其小尺寸允许在距离固体边界仅150微米的情况下进行测量。由于其4 mK的高温分辨率和大约10 ms量级的短响应时间，该传感器非常适合在强吸收梯度中进行剂量测量。由于传感器和引线的高电阻，射频（RF）电场对信号的影响被最小化。该探头已成功用于确定置于培养皿中的细胞培养物经射频暴露后产生的高度不均匀吸收分布。
