Wearable five-finger keyboardless input system based on silk fibroin electronic skin

Liu, Jiarong; Chen, Jianfeng; Dai, Fukang; Zhao, Jizhong; Li, Shengyou; Shi, Yian; Li, Wanjing; Geng, Longyu; Ye, Meidan; Chen, Xiaping; Liu, Yuanyuan; Guo, Wenxi

doi:10.1016/j.nanoen.2022.107764

Cited by 9 publications

(19 citation statements)

References 28 publications

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“…Biomaterials-based epidermal sensors that can convert external stimuli into electrical signals have great application prospects in VR due to their excellent biocompatibility, sensitivity and wearability [ 131 , 157 ]. Liu et al developed a silk fibroin (SF) based triboelectric nanogenerator (TENG) [ 158 ]. Combining with a number of pair encoding tables, a wearable five-finger keyboardless input system (WKIS) was constructed for application in VR-driving games.…”

Section: Applicationsmentioning

confidence: 99%

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Recent Progress of Biomaterials-Based Epidermal Electronics for Healthcare Monitoring and Human–Machine Interaction

et al. 2023

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Epidermal electronics offer an important platform for various on-skin applications including electrophysiological signals monitoring and human–machine interactions (HMI), due to their unique advantages of intrinsic softness and conformal interfaces with skin. The widely used nondegradable synthetic materials may produce massive electronic waste to the ecosystem and bring safety issues to human skin. However, biomaterials extracted from nature are promising to act as a substitute material for the construction of epidermal electronics, owing to their diverse characteristics of biocompatibility, biodegradability, sustainability, low cost and natural abundance. Therefore, the development of natural biomaterials holds great prospects for advancement of high-performance sustainable epidermal electronics. Here, we review the recent development on different types of biomaterials including proteins and polysaccharides for multifunctional epidermal electronics. Subsequently, the applications of biomaterials-based epidermal electronics in electrophysiological monitoring and HMI are discussed, respectively. Finally, the development situation and future prospects of biomaterials-based epidermal electronics are summarized. We expect that this review can provide some inspirations for the development of future, sustainable, biomaterials-based epidermal electronics.

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Section: Applicationsmentioning

confidence: 99%

“…( e ) Schematic diagram of direction controlling by SR-TENG. ( f ) Voltage variation produced by SR-TENG during sliding to right [ 158 ].…”

Section: Figurementioning

confidence: 99%

Recent Progress of Biomaterials-Based Epidermal Electronics for Healthcare Monitoring and Human–Machine Interaction

et al. 2023

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“…The authors showed that this Bio-TENG can generate up to 25 V during normal pressing. The increase in click speed allows for generating up to 55 V. Liu et al 43 designed a wearable five-finger keyboardless input system (WKIS) based on a single-electrode mode ring-shaped silk fibroin Bio-TENG (Figure 3a) worn on 5 fingers. These Bio-TENGs could sense finger motions with different electrical outputs related to different finger positions.…”

Section: Applications Of Bio-tengsmentioning

confidence: 99%

“…This static charge susceptibility makes silk a promising material for triboelectric applications. Additionally, silk possesses good biocompatibility, characteristic transparency, water-permeability, biocompatibility, and excellent mechanical properties such as high tensile strength and good flexibility. , The mechanical properties of silk are due to its hierarchical structure. It features crystalline domains (β-sheets) that confer rigidity and amorphous domains (sericin and α-helices) that confer flexibility. , Silk has been used to make films for Bio-TENGs because of its combination of rigidity and flexibility.…”

Section: Biopolymers Used In the Development Of Novel Bio-tengsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Review on the Development of Biopolymer Nanocomposite-Based Triboelectric Nanogenerators (Bio-TENGs)

Torres,

Gonzales,

Troncoso

et al. 2023

ACS Appl. Electron. Mater.

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Triboelectric nanogenerators (TENGs) are electronic devices capable of harvesting low-frequency mechanical motions to produce electrical energy through the triboelectrification effect. A great number of electronic devices, such as wearable devices, implantable medical devices, and monitoring sensors, among others, use conventional power sources such as batteries and capacitors. They are usually toxic, nondegradable, and hard to recycle, representing human and environmental hazards. In addition, conventional batteries and capacitors are usually rigid, heavy, and not suitable for the fabrication of portable and flexible devices. TENGs appear as a promising option to be used in the development of light, portable, and self-powered electronic devices. TENGs were first developed using synthetic polymers such as polytetrafluoroethylene (PTFE), fluorinated ethylene propylene (FEP), polydimethylsiloxane (PDMS), and polyimide (Kapton) for the fabrication of the active surfaces that store charge. Bio-TENGs have been fabricated using biopolymers such as cellulose, silk, and chitosan. These Bio-TENGs take advantage of the inherent biodegradability and biocompatibility of biopolymers. In order to improve the capability of biopolymer-based surfaces to store electrostatic charge, several treatments are reported, including the incorporation of nanoparticles and surface treatments. These biopolymer-based active surfaces with improved properties allow Bio-TENGs to achieve output performances similar to those reported for synthetic TENGs. Bio-TENGs have been used in a wide range of applications, such as human monitoring systems, tissue engineering, electronic devices, and industrial-level flooring, among others. This review is focused on the development of Bio-TENGs. The different types of biopolymers used for the fabrication of active surfaces are described and classified as protein-based, polysaccharide-based, and synthetic-based biopolymers. The different strategies used for improving the triboelectric properties of biopolymer-based surfaces are presented, along with the resulting output performance of Bio-TENGs. The reported applications for these Bio-TENGs are also discussed.

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Recent Progress of Nature Materials Based Triboelectric Nanogenerators for Electronic Skins and Human–Machine Interaction

Zhang,

Ren,

et al. 2024

Adv Energy and Sustain Res

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The current field of human‐machine interaction (HMI) and electronic skin (e‐skin) is confronting challenges associated with energy supply, sensitivity, and biocompatibility. Traditional HMI systems, though rich in features, are constrained in their applications in the medical and wearable technology sectors due to their rigid structure and reliance on third‐party power inputs. Triboelectric nanogenerators (TENGs) based on natural materials are emerging as a focal point of research in this domain, attributed to their self‐powering capabilities, flexibility, and biocompatibility. These natural material‐based TENGs emulate the mechanical and biological characteristics of human skin, adapt to various body shapes and movements, and offer an efficient and reliable solution for the precise detection and analysis of complex, subtle physiological signals, thereby fostering innovations in wearable devices and robotic technology. This article provides a comprehensive review of recent advancements in natural material‐based TENGs, detailing the materials employed, including proteins, chitosan, and cellulose. It encapsulates their applications in the realms of electronic skin and HMI. Finally, the challenges confronted by natural material‐based TENGs are outlined and future trajectories for development in this burgeoning field are projected.

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Wearable five-finger keyboardless input system based on silk fibroin electronic skin

Cited by 9 publications

References 28 publications

Recent Progress of Biomaterials-Based Epidermal Electronics for Healthcare Monitoring and Human–Machine Interaction

Recent Progress of Biomaterials-Based Epidermal Electronics for Healthcare Monitoring and Human–Machine Interaction

A Review on the Development of Biopolymer Nanocomposite-Based Triboelectric Nanogenerators (Bio-TENGs)

Recent Progress of Nature Materials Based Triboelectric Nanogenerators for Electronic Skins and Human–Machine Interaction

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