Investigating the effect of temperature and frequency on dielectric properties of polyvinylidene fluoride (PVDF) for its application in a skin temperature sensor
Schmidt, Devin M.
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Schmidt, Devin M.; Mahapatro, Anil; Loflin, Ben; Cluff, Kim. 2019. Investigating the effect of temperature and frequency on dielectric properties of polyvinylidene fluoride (PVDF) for its application in a skin temperature sensor. 77th Annual Technical Conference of the Society of Plastics Engineers, ANTEC 2019, Code 151545
Monitoring physiological parameters of crew on spaceflight missions is of upmost importance for long term microgravity expeditions. Body temperature is one particularly important parameter, as changes in thermoregulation or circadian rhythms may be connected to decreased mental and physical performance if it deviates significantly from 37° C. In this paper, the effects of temperature and frequency on the dielectric properties of 3D printed polyvinylidene fluoride (PVDF) discs were studied. The objective is to incorporate the polymer into an electromagnetic resonating sensor to measure skin temperature. The temperature dependent dielectric permittivity of the polymer interacting with the electromagnetic field of the sensor will result in a resonant frequency shift that can be correlated to report body temperature in a noninvasive, lightweight, and wireless fashion.
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