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세션명 Graduate Student Oral Session (I) (English)
발표장 301호
논문코드 1O12-10
발표일 2019-10-10
발표시간 15:55-16:10
논문제목 Deformation-Insensitive Flexible Temperature Sensor based on Thermoresponsive Semi-Crystalline Polymer Microdomains
발표자 이영오
발표자 소속 울산과학기술원
저자 이영오, 박종화, 최아영, 신영은, 고현협
소속 울산과학기술원
논문초록 The ever-increasing demand for improved quality of daily life drives the rapid evolution of wearable electronics to monitor personal biosignals. Body temperature is one of the critical factors for the diagnosis of health condition. For accurate diagnosis of health conditions, temperature sensor must be able to detect minute changes that may be as small as 0.1 ℃ and stably operate under mechanical deformations during body movements. Here, we demonstrate a deformation-insensitive, flexible, and highly sensitive temperature sensor based on polymer composite with semi-crystalline polymer microdomains. Unlike previously reported resistive temperature sensors, our sensor shows an extremely large change in resistance due to the volume expansion of the semi-crystalline polymer microdomains, as well as the TCR of graphene. The optimized temperature sensor exhibits an ultrahigh sensitivity of 6.94% ℃-1, high sensing accuracy of 0.1 ℃, and stable operation under mechanical deformation.