Please use this identifier to cite or link to this item: https://doi.org/10.1002/advs.201903636
Title: Wearable Triboelectric/Aluminum Nitride Nano-Energy-Nano-System with Self-Sustainable Photonic Modulation and Continuous Force Sensing
Authors: Dong, Bowei 
Shi, Qiongfeng 
He, Tianyiyi 
Zhu, Shiyang 
Zhang, Zixuan 
Sun, Zhongda
Ma, Yiming 
Kwong, Dim-Lee 
Lee, Chengkuo 
Keywords: motion monitoring
photonic modulators
triboelectric nanogenerators
wearable textiles
Issue Date: 19-Jun-2020
Publisher: WILEY
Citation: Dong, Bowei, Shi, Qiongfeng, He, Tianyiyi, Zhu, Shiyang, Zhang, Zixuan, Sun, Zhongda, Ma, Yiming, Kwong, Dim-Lee, Lee, Chengkuo (2020-06-19). Wearable Triboelectric/Aluminum Nitride Nano-Energy-Nano-System with Self-Sustainable Photonic Modulation and Continuous Force Sensing. ADVANCED SCIENCE 7 (15). ScholarBank@NUS Repository. https://doi.org/10.1002/advs.201903636
Abstract: Wearable photonics offer a promising platform to complement the thriving complex wearable electronics system by providing high-speed data transmission channels and robust optical sensing paths. Regarding the realization of photonic computation and tunable (de)multiplexing functions based on system-level integration of abundant photonic modulators, it is challenging to reduce the overwhelming power consumption in traditional current-based silicon photonic modulators. This issue is addressed by integrating voltage-based aluminum nitride (AlN) modulator and textile triboelectric nanogenerator (T-TENG) on a wearable platform to form a nano-energy-nano-system (NENS). The T-TENG transduces the mechanical stimulations into electrical signals based on the coupling of triboelectrification and electrostatic induction. The self-generated high-voltage from the T-TENG is applied to the AlN modulator and boosts its modulation efficiency regardless of AlN's moderate Pockels effect. Complementarily, the AlN modulator's capacitive nature enables the open-circuit operation mode of T-TENG, providing the integrated NENS with continuous force sensing capability which is notably uninfluenced by operation speeds. Furthermore, a physical model is proposed to describe the coupled AlN modulator/T-TENG system. With the enhanced photonic modulation and the open-circuit operation mode enabled by synergies between the AlN modulator and the T-TENG, optical Morse code transmission and continuous human motion monitoring are demonstrated for practical wearable applications.
Source Title: ADVANCED SCIENCE
URI: https://scholarbank.nus.edu.sg/handle/10635/189860
ISSN: 21983844
DOI: 10.1002/advs.201903636
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