Self-Powered Flexible Sensing System Based on Super-Tough, High Ionic Conductivity and Rapid Self-Recovery Fully Physically Crosslinked Double Network Hydrogel

2022 ◽  
Author(s):  
Shaoji Wu ◽  
Li Tang ◽  
Yue Xu ◽  
Guangcong Tang ◽  
Bailin Dai ◽  
...  
Keyword(s):  
Solid State ◽  
Power Supply ◽  
Electronic Devices ◽  
Flexible Sensors ◽  
Double Network ◽  
Sensing System ◽  
Wearable Electronic ◽  
Self Powered ◽  
Physically Crosslinked ◽  
Wearable Electronic Devices

At present, hydrogel flexible sensors have attracted wide attention in the field of wearable electronic devices. However, hydrogel flexible sensors need external solid state power supply to output stable signals....

Highly transparent and flexible graphitic C3N4 nanowire/PVA/PEDOT:PSS supercapacitors for transparent electronic devices

2020 ◽  
Vol 13 (02) ◽  
pp. 2051006
Author(s):  
Jialun Li ◽  
Xueyu Zhang ◽  
Xuesong Li ◽  
Lianfeng Duan ◽  
Xijia Yang ◽  
...  
Keyword(s):  
Solid State ◽  
Motion Detection ◽  
Power Supply ◽  
Electronic Devices ◽  
Transparent Film ◽  
Capacitance Change ◽  
Vacuum Filtration ◽  
Integrated Electronics ◽  
Wearable Electronic ◽  
Wearable Electronic Devices

To achieve reliable flexibility and acceptable transparency for integrated electronics, the power supply sources of these devices have to meet the requirement of flexibility and transparency. Herein, we developed a facile and non-toxic way to manufacture all-solid-state supercapacitors with high capacitive performance, transparency and flexibility. The as-prepared g-C3N4 nanowires are distributed in Polyvinyl Alcohol (PVA) and Poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT:PSS) solution, transparent film could be formed by vacuum filtration. The g-C3N4 nanowires provide pseudocapacitance and PVA and PEDOT:PSS matrix provides bendable and stretchable ability. The g-C3N4/PVA electrode achieves a specific areal capacitance of 3.51[Formula: see text]mF[Formula: see text]cm[Formula: see text] with transparency of 85%, and that of g-C3N4/PVA/PEDOT:PSS is 5.32[Formula: see text]mF[Formula: see text]cm[Formula: see text] with transparency of 72%. The facile process provides a reasonable architecture for the preparation of a variety of flexible, transparent and wearable electronic devices. The flexible and transparent devices show an instant response to the finger bending with the capacitance change of more than 25%, which provides the possibility for fabricating smart flexible device to monitor human health and motion detection.

scholarly journals Textile-Based Triboelectric Nanogenerators for Wearable Self-Powered Microsystems

Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 158
Author(s):  
Peng Huang ◽  
Dan-Liang Wen ◽  
Yu Qiu ◽  
Ming-Hong Yang ◽  
Cheng Tu ◽  
...  
Keyword(s):  
Rapid Development ◽  
Electronic Devices ◽  
Quantitative Relationship ◽  
Triboelectric Nanogenerator ◽  
Output Performance ◽  
Integrated Microsystems ◽  
Wearable Electronic ◽  
Self Powered ◽  
Representative Work ◽  
Wearable Electronic Devices

In recent years, wearable electronic devices have made considerable progress thanks to the rapid development of the Internet of Things. However, even though some of them have preliminarily achieved miniaturization and wearability, the drawbacks of frequent charging and physical rigidity of conventional lithium batteries, which are currently the most commonly used power source of wearable electronic devices, have become technical bottlenecks that need to be broken through urgently. In order to address the above challenges, the technology based on triboelectric effect, i.e., triboelectric nanogenerator (TENG), is proposed to harvest energy from ambient environment and considered as one of the most promising methods to integrate with functional electronic devices to form wearable self-powered microsystems. Benefited from excellent flexibility, high output performance, no materials limitation, and a quantitative relationship between environmental stimulation inputs and corresponding electrical outputs, TENGs present great advantages in wearable energy harvesting, active sensing, and driving actuators. Furthermore, combined with the superiorities of TENGs and fabrics, textile-based TENGs (T-TENGs) possess remarkable breathability and better non-planar surface adaptability, which are more conducive to the integrated wearable electronic devices and attract considerable attention. Herein, for the purpose of advancing the development of wearable electronic devices, this article reviews the recent development in materials for the construction of T-TENGs and methods for the enhancement of electrical output performance. More importantly, this article mainly focuses on the recent representative work, in which T-TENGs-based active sensors, T-TENGs-based self-driven actuators, and T-TENGs-based self-powered microsystems are studied. In addition, this paper summarizes the critical challenges and future opportunities of T-TENG-based wearable integrated microsystems.

scholarly journals One-Step Laser Encapsulation of Nano-Cracking Strain Sensors

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2673 ◽  
Author(s):  
Chan Park ◽  
Hyunsuk Jung ◽  
Hyunwoo Lee ◽  
Sunguk Hong ◽  
Hyonguk Kim ◽  
...  
Keyword(s):  
Electronic Devices ◽  
Strain Sensors ◽  
Harsh Environments ◽  
Electrical Characteristics ◽  
Flexible Sensors ◽  
One Step ◽  
Wearable Electronic ◽  
Flexible Strain Sensor ◽  
Wearable Electronic Devices ◽  
Encapsulation Methods

Development of flexible strain sensors that can be attached directly onto the skin, such as skin-mountable or wearable electronic devices, has recently attracted attention. However, such flexible sensors are generally exposed to various harsh environments, such as sweat, humidity, or dust, which cause noise and shorten the sensor lifetimes. This study reports the development of a nano-crack-based flexible sensor with mechanically, thermally, and chemically stable electrical characteristics in external environments using a novel one-step laser encapsulation (OLE) method optimized for thin films. The OLE process allows simultaneous patterning, cutting, and encapsulating of a device using laser cutting and thermoplastic polymers. The processes are simplified for economical and rapid production (one sensor in 8 s). Unlike other encapsulation methods, OLE does not degrade the performance of the sensor because the sensing layers remain unaffected. Sensors protected with OLE exhibit mechanical, thermal, and chemical stability under water-, heat-, dust-, and detergent-exposed conditions. Finally, a waterproof, flexible strain sensor is developed to detect motions around the eye, where oil and sweat are generated. OLE-based sensors can be used in several applications that are exposed to a large amount of foreign matter, such as humid or sweaty environments.

Series of in-fiber graphene supercapacitors for flexible wearable devices

2015 ◽  
Vol 3 (6) ◽  
pp. 2547-2551 ◽  
Author(s):  
Yuan Liang ◽  
Zhi Wang ◽  
Jiao Huang ◽  
Huhu Cheng ◽  
Fei Zhao ◽  
...  
Keyword(s):  
Solid State ◽  
Electronic Devices ◽  
Wearable Devices ◽  
Wearable Electronic ◽  
Wearable Electronic Devices

An integrated series of in-fiber all-solid-state graphene supercapacitors have been fabricated for flexible wearable electronic devices.

Flexible, sandwich-like CNTs/NiCo2O4 hybrid paper electrodes for all-solid state supercapacitors

2017 ◽  
Vol 5 (12) ◽  
pp. 5886-5894 ◽  
Author(s):  
Yongjia Zheng ◽  
Zhiqiang Lin ◽  
Wenjun Chen ◽  
Binghao Liang ◽  
Huiwei Du ◽  
...  
Keyword(s):  
Solid State ◽  
Storage Systems ◽  
Electronic Devices ◽  
Flexible Supercapacitors ◽  
Wearable Electronic ◽  
Increasing Demand ◽  
Wearable Electronic Devices

With the increasing demand for compact storage systems for portable and wearable electronic devices, flexible supercapacitors with high volumetric performance have attracted considerable attention.

Durable, flexible self-standing hydrogel electrolytes enabling high-safety rechargeable solid-state zinc metal batteries

2018 ◽  
Vol 6 (45) ◽  
pp. 23046-23054 ◽  
Author(s):  
Qi Han ◽  
Xiaowei Chi ◽  
Shuming Zhang ◽  
Yunzhao Liu ◽  
Biao Zhou ◽  
...  
Keyword(s):  
Solid State ◽  
Electronic Devices ◽  
Zinc Metal ◽  
Wearable Electronic ◽  
Wearable Electronic Devices ◽  
Safety And Stability

The boom of flexible and wearable electronic devices boosts the development of flexible batteries with high safety and stability.

Recent progress in flexible–wearable solar cells for self-powered electronic devices

2020 ◽  
Vol 13 (3) ◽  
pp. 685-743 ◽  
Author(s):  
Seyyed Alireza Hashemi ◽  
Seeram Ramakrishna ◽  
Armin Gerhard Aberle
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Recent Progress ◽  
Power Conversion ◽  
Electronic Devices ◽  
Energy Sources ◽  
Photovoltaic Devices ◽  
Wearable Electronic ◽  
Self Powered ◽  
Wearable Electronic Devices

Photovoltaic devices have become ideal alternatives instead of common energy sources owing to their superior mechanical robustness and excellent power conversion efficiency that can be used for supplying wearable electronic devices.

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