Multi-Functional and Stretchable Thermoelectric Bi_2Te_3 Fabric for Strain, Pressure, and Temperature-Sensing

Chaebeen Kwon; Sanghyeon Lee; Chihyeong WonKyu Hyoung LeeMinyoung KimJaehong LeeSeung-Jae YangMinkyu LeeSeungmin LeeKukro YoonSungjoon ChoTaeyoon Lee

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Multi-Functional and Stretchable Thermoelectric Bi_2Te_3 Fabric for Strain, Pressure, and Temperature-Sensing

机译：Multi-Functional and Stretchable Thermoelectric Bi_2Te_3 Fabric for Strain, Pressure, and Temperature-Sensing

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Fiber-based electronics are essential components for human-friendly wearabledevices due to their flexibility, stretchability, and wearing comfort. Manythermoelectric (TE) fabrics are investigated with diverse materials and manufacturingmethods to meet these potential demands. Despite such advancements,applying inorganic TE materials to stretchable platforms remainschallenging, constraining their broad adoption in wearable electronics.Herein, a multi-functional and stretchable bismuth telluride (Bi_2Te_3) TE fabricis fabricated by in situ reduction to optimize the formation of Bi_2Te_3 nanoparticles(NPs) inside and outside of cotton fabric. Due to the high durability ofBi_2Te_3 NP networks, the Bi_2Te_3 TE fabric exhibits excellent electrical reliabilityunder 10,000 cycles of both stretching and compression. Interestingly,intrinsic negative piezoresistance of Bi_2Te_3 NPs under lateral strain is found,which is caused by the band gap change. Furthermore, the TE unit achievesa power factor of 25.77 μWm~(?1)K~(?2) with electrical conductivity of 36.7 Scm~(?1)and a Seebeck coefficient of ?83.79 μVK~(?1) at room temperature. The Bi_2Te_3 TEfabric is applied to a system that can detect both normal pressure and temperaturedifference. Balance weight and a finger put on top of the 3 × 3 Bi_2Te_3fabric assembly are differentiated through the sensing system in real time.

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来源
《Advanced functional materials》 |2023年第26期|2300092.1-2300092.9|共9页
作者
Chaebeen Kwon; Sanghyeon Lee; Chihyeong WonKyu Hyoung LeeMinyoung KimJaehong LeeSeung-Jae YangMinkyu LeeSeungmin LeeKukro YoonSungjoon ChoTaeyoon Lee;
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作者单位

Nanobio Device LaboratorySchool of Electrical and Electronic EngineeringYonsei University50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea;

KIURI InstituteYonsei University50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea;

Department of Materials Science and EngineeringYonsei University50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of KoreaDepartment of Robotics EngineeringDaegu Gyeongbuk Institute of Science and TechnologyDaegu-si 42988, Republic of KoreaHigh-Speed Circuits & Systems LaboratorySchool of Electrical and Electronic EngineeringYonsei University50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea;

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bismuth telluride(Bi_2Te_3); negative gauge factor; pressure sensors; strain sensors; temperature sensors; thermoelectric fabrics; wearable electronics;

Multi-Functional and Stretchable Thermoelectric Bi_2Te_3 Fabric for Strain, Pressure, and Temperature-Sensing

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