Self-Powered Sensing in Wearable Electronics─A Paradigm Shift Technology

Tang, Wei; Sun, Qijun; Wang, Zhong Lin

doi:10.1021/acs.chemrev.3c00305

Cited by 63 publications

(9 citation statements)

References 231 publications

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“…The next-generation wearable electronics will be foldable, flexible and even stretchable [1][2][3]. These wearable electronics can deform as needed, they have brilliant adaption ability and can be widely used in irregular surfaces [4,5]. Moreover, the deformability of wearable electronics also improves their portability and comfort [6,7].…”

Section: Introductionmentioning

confidence: 99%

Highly stretchable kirigami-patterned nanofiber-based nanogenerators for harvesting human motion energy to power wearable electronics

Ning,

Xiang,

Sun

et al. 2024

Mater. Futures

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Wearable electronics are advancing toward miniaturization and flexibility. However, traditional energy supply methods have largely hindered their development. An effective solution to this problem is to convert human mechanical energy into electricity to power wearable electronic devices. Therefore, it is greatly attractive to design flexible, foldable and even stretchable energy harvesting devices. Herein, we used the electrospinning and kirigami approach to develop a type of highly stretchable kirigami-patterned nanofiber-based triboelectric nanogenerator (K-TENG). Due to its innovative structural design, the K-TENG can achieve a tensile strain of 220 %, independent of the tensile properties of the material itself. When a person swings the arms, the K-TENG fixed to the clothing can convert mechanical energy from human movement into electrical energy. The produced electricity can directly drive 50 LED lights and a digital watch, or be stored in a lithium battery to charge the smartwatch and smart phone respectively. This work employs a new method to fabricate stretchable TENG and demonstrates its promising applications in wearable power technology.

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Section: Introductionmentioning

confidence: 99%

Highly stretchable kirigami-patterned nanofiber-based nanogenerators for harvesting human motion energy to power wearable electronics

Ning,

Xiang,

Sun

et al. 2024

Mater. Futures

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“…Triboelectric nanogenerators (TENGs) have been extensively studied in recent years, which can convert ambient mechanical energy into electricity and have exhibited great potential in diverse applications of nano/micro/macro‐scale power source, [ 1–6 ] energy‐autonomy systems, [ 7–9 ] self‐powered human–machine interface, [ 10–12 ] and triboelectrification induced interface spectroscopy. [ 13 ] TENG is generally composed of two dielectric films (triboelectric layers) with opposite tribo‐polarity.…”

Section: Introductionmentioning

confidence: 99%

Tribotronic Vertical Field‐Effect Transistor Based on van der Waals Heterostructures

Wang,

Lin,

Gao

et al. 2024

Adv Funct Materials

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Graphene has attracted considerable interest for next‐generation electronics. However, the absence of natural bandgap has limited the current on/off ratio of graphene‐based transistors. Vertical integration of 2D heterostructures offers a promising approach to address this challenge, enabling high‐current‐density vertical field‐effect transistor (VFET) with large on/off ratio. Here, a triboelectric potential‐powered VFET with a vertical stacked graphene/MoS2 heterostructure and a sliding‐mode triboelectric nanogenerator (TENG) coupled with gate dielectrics are proposed. The tribotronic VFET has an ultrashort channel length in vertical direction, exhibiting excellent current driving capability with an ultrahigh on‐state current density of 950 A cm−2 and a good current on/off ratio of 630. It also demonstrates reconfigurable diode behavior with a rectification ratio over 102. Temperature‐dependent studies are applied to tribotronic devices for the first time, indicating an effective modulation on the Schottky barrier height of 150 meV by the triboelectric potential. A green LED pixel is driven by the tribotronic VFET as a demonstration to work as a tactile interactive light‐emitting device. The demonstrated tribotronic vertical device offers a promising strategy for integrating various 2D layered materials with TENG in vertical direction, enabling 3D integration of low‐power and interactive devices for next‐generation electronics.

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“…1,2 It is worth noting that the rapid application of wearable posture monitoring devices has driven the flourishing development of related flexible sensors, especially for self-powered sensing devices. 3 Flexible sensors not only have potential application value in the sport fields 4,5 but also have wide applications in human physiological monitoring, 6 bio-medicine, 7 robot skin, 8 and intelligent transportation. 9 The reported flexible sensors, including the piezoelectric effect, 10 triboelectric effect, 11 thermoelectric effect, 12 piezoresistive effect, 13 and capacitive effect, 14 can achieve feedback on various motions and environmental information and convert this information into visualized electrical signals for data harvesting, communication, storage, and analysis.…”

Section: Introductionmentioning

confidence: 99%

A pipe arrangement structure triboelectric nanogenerator for mechanical energy harvesting and sports training monitoring

Duan,

Ge,

Hong-Kwan

et al. 2024

APL Materials

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Recently, intelligent wearable sensors applied in the field of smart sports have attracted much attention. Hence, we designed a pipe arrangement structure triboelectric nanogenerator (PA-TENG), and it can obtain mechanical energy and monitor sports motion. The triboelectric materials are composed of a polydimethylsiloxane layer attached to a silicone tube and nylon layer. The conductive copper attached to the silicone tube surface serves as a conductive electrode of the PA-TENG. Meanwhile, the soft silicone tube can endow the PA-TENG device with the ability to sense pressure. The results indicate that this silicone tube substrate can effectively adsorb conductive copper layers, and the conductive electrode layer still maintains good conductivity stability at different bending angles (15°–90°). The PA-TENG can achieve the maximum output power of 1.03 mW (matched load: 6 MΩ). The results indicate that the PA-TENG can attain the open-circuit voltage (Voc) of 190.05 V and the short-circuit current (Isc) of 1.98 μA. The transfer charge (Qsc) of the PA-TENG can arrive at 139.01 nC. The PA-TENG can drive the light-emitting diodes (LEDs), which demonstrates good practicality. Moreover, the PA-TENG can be installed on human joints (fingers, arms, knees, feet, etc.) as a monitoring sensor for various sports training, providing real-time sensing data for training. This research provides a novel pipe arrangement substrate for the wearable sports training sensor.

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Self-Powered Sensing in Wearable Electronics─A Paradigm Shift Technology

Cited by 63 publications

References 231 publications

Highly stretchable kirigami-patterned nanofiber-based nanogenerators for harvesting human motion energy to power wearable electronics

Highly stretchable kirigami-patterned nanofiber-based nanogenerators for harvesting human motion energy to power wearable electronics

Tribotronic Vertical Field‐Effect Transistor Based on van der Waals Heterostructures

A pipe arrangement structure triboelectric nanogenerator for mechanical energy harvesting and sports training monitoring

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