Passive wireless sensing of Co-60 gamma radiation using fully-depleted silicon-on-insulator (FDSOI) variable capacitors is demonstrated. A linear relationship between resonant frequency and radiation dose is observed for water-equivalent doses up to 100 Gy, with a frequency change per unit dose of -2.02 kHz/Gy. These results show FDSOI technology has the potential to realize ultra-small passive wireless radiation dosimeters with high sensitivity for a wide range of medical and security applications.
Bibliographical noteFunding Information:
This work was supported by the National Cancer Institute of the National Institutes of Health under award number R21CA169759. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. Portions of this work were carried out in the Characterization Facility at the University of Minnesota, which received capital equipment funding from NSF through the MRSEC program under Award No. DMR-1420013.
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- Radiation detector