Direct muscle stimulation using diode-amplified triboelectric nanogenerators (TENGs)

被引:99
作者
Wang, Hao [1 ,3 ,5 ]
Wang, Jiahui [1 ,2 ,3 ,5 ]
He, Tianyiyi [1 ,3 ,5 ]
Li, Zhou [6 ]
Lee, Chengkuo [1 ,2 ,3 ,4 ,5 ]
机构
[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117583, Singapore
[2] Natl Univ Singapore, Singapore Inst Neurotechnol SINAPSE, Singapore 117583, Singapore
[3] Natl Univ Singapore, Ctr Intelligent Sensor & MEMS, Singapore 117581, Singapore
[4] Natl Univ Singapore, NUS Grad Sch Integrat Sci & Engn, Singapore 117456, Singapore
[5] Natl Univ Singapore, Hybrid Integrated Flexible Elect Syst, Singapore 117583, Singapore
[6] Chinese Acad Sci, Natl Ctr Nanosci & Technol NCNST, Beijing Inst Nanoenergy & Nanosyst, CAS Ctr Excellence Nanosci, Beijing 100083, Peoples R China
基金
新加坡国家研究基金会; 中国国家自然科学基金;
关键词
Diode-amplified TENG; Direct muscle stimulation; Self-powered; Output amplification; Resonance frequency of neuron; Exponential current waveform; ELECTRICAL-STIMULATION; SENSOR; RECRUITMENT; MODULATION; EXCITATION; FIBERS;
D O I
10.1016/j.nanoen.2019.06.040
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Triboelectric nanogenerators (TENGs) device is proven to be a feasible method for self-powered direct neural/ muscle stimulations. However, the higher threshold current required for direct muscle stimulation makes the efficiency of TENGs stimulator questionable. In this study, a new general configuration of TENG device, Diode amplified Triboelectric nanogenerators (D-TENGs), is proposed to greatly enhance the efficiency of direct muscle stimulation in three aspects: 1. the current can be much amplified by D-TENGs; 2. the exponential current pulse of D-TENGs device is the optimal waveform with the highest efficiency for muscle stimulation; 3. the D-TENGs can boost up the frequency of the current pulse to match with the resonance frequency of motoneurons in muscle, which is around 500 Hz. Thus, D-TENGs can be considered as the optimal TENG device for direct muscle stimulations. Meanwhile, the best electrode shift phenomenon observed in the experiments is explained and a general guideline for neural interface design is proposed.
引用
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页数:10
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