scholarly journals Fiber-Shaped Triboiontronic Electrochemical Transistor

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Jinran Yu ◽  
Shanshan Qin ◽  
Huai Zhang ◽  
Yichen Wei ◽  
Xiaoxiao Zhu ◽  
...  
Keyword(s):  
Electronic Devices ◽  
Wearable Electronics ◽  
Ion Injection ◽  
Contact Electrification ◽  
Electrochemical Transistor ◽  
Efficient Route ◽  
Self Powered ◽  
Effective Use ◽  
Electronic Textile ◽  
A Current

Contact electrification-activated triboelectric potential offers an efficient route to tuning the transport properties in semiconductor devices through electrolyte dielectrics, i.e., triboiontronics. Organic electrochemical transistors (OECTs) make more effective use of ion injection in the electrolyte dielectrics by changing the doping state of the semiconductor channel. However, the mainstream flexible/wearable electronics and OECT-based devices are usually modulated by electrical signals and constructed in conventional geometry, which lack direct and efficient interaction between the external environment and functional electronic devices. Here, we demonstrate a fiber-shaped triboiontronic electrochemical transistor with good electrical performances, including a current on/off ratio as high as ≈1286 with off-current at ~nA level, the average threshold displacements (Dth) of 0.3 mm, the subthreshold swing corresponding to displacement (SSD) at 1.6 mm/dec, and excellent flexibility and durability. The proposed triboiontronic electrochemical transistor has great potential to be used in flexible, functional, and smart self-powered electronic textile.

Energy Harvesting With Piezoelectric Nanobrushes: Analysis and Design Principles

2009 ◽  
Author(s):  
Carmel Majidi ◽  
Mikko Haataja ◽  
David J. Srolovitz
Keyword(s):  
Energy Harvesting ◽  
Design Space ◽  
Electronic Devices ◽  
Wearable Electronics ◽  
Nanostructured Surface ◽  
Elastic Rod ◽  
Analysis And Design ◽  
Rod Theory ◽  
Piezoelectric Energy ◽  
Self Powered

The development of self-powered electronic devices is essential for emerging technologies such as wireless sensor networks, wearable electronics, and microrobotics. Of particular interest is the rapidly growing field of piezoelectric energy harvesting (PEH), in which mechanical strains are converted to electricity. Recently, PEH has been demonstrated by brushing an array of piezoelectric nanowires against a nanostructured surface. The piezoelectric nanobrush generator can be limited to sub-micron dimensions and thus allows for a vast reduction in the size of self-powered devices. Moreover, energy harvesting is controlled through contact between the nanowire tips and nanostructured surface, which broadens the design space to a wealth of innovations in tribology. Here we propose design criteria based on principles of contact mechanics, elastic rod theory, and continuum piezoelasticity.

scholarly journals Design framework for a seamless smart glove using a digital knitting system

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Yewon Song ◽  
Seulah Lee ◽  
Yuna Choi ◽  
Sora Han ◽  
Hyuna Won ◽  
...  
Keyword(s):  
Systematic Approach ◽  
Performance Criteria ◽  
Wearable Electronics ◽  
Design Development ◽  
Performance Requirements ◽  
Development Framework ◽  
Promising Strategy ◽  
Cad Cam ◽  
Wearable Electronic ◽  
Electronic Textile

AbstractThe wearable electronics integrated with textile-based devices is a promising strategy to meet the requirements of human comfort as well as electrical performances. This research presents a design and development framework for a seamless glove sensor system using digital knitting fabrication. Based on the performance requirements of glove sensors for controlling a prosthetic hand, desirable design components include electrical conductivity, comfort, formfit, electrical sensitivity, and customizable design. These attributes are determined and achieved by applying appropriate materials and fabrication technologies. In this study, a digital knitting CAD/CAM system is utilized to meet the desired performance criteria, and two prototypes of the seamless glove sensor systems are successfully developed for the detection of both human and robotic finger motions. This digital knitting system will provide considerable potential for customized design development as well as a sustainable production process. This structured, systematic approach could be adapted in the future development of wearable electronic textile systems.

scholarly journals Direct coherent multi-ink printing of fabric supercapacitors

2021 ◽  
Vol 7 (3) ◽  
pp. eabd6978 ◽  
Author(s):  
Jingxin Zhao ◽  
Hongyu Lu ◽  
Yan Zhang ◽  
Shixiong Yu ◽  
Oleksandr I. Malyi ◽  
...  
Keyword(s):  
System Integration ◽  
High Performance ◽  
Mechanical Stability ◽  
Three Dimensional ◽  
High Mass ◽  
Wearable Electronics ◽  
Energy Storage Devices ◽  
Fabrication Procedure ◽  
Self Powered ◽  
Mechanical Devices

Coaxial fiber-shaped supercapacitors with short charge carrier diffusion paths are highly desirable as high-performance energy storage devices for wearable electronics. However, the traditional approaches based on the multistep fabrication processes for constructing the fiber-shaped energy device still encounter persistent restrictions in fabrication procedure, scalability, and mechanical durability. To overcome this critical challenge, an all-in-one coaxial fiber-shaped asymmetric supercapacitor (FASC) device is realized by a direct coherent multi-ink writing three-dimensional printing technology via designing the internal structure of the coaxial needles and regulating the rheological property and the feed rates of the multi-ink. Benefitting from the compact coaxial structure, the FASC device delivers a superior areal energy/power density at a high mass loading, and outstanding mechanical stability. As a conceptual exhibition for system integration, the FASC device is integrated with mechanical units and pressure sensor to realize high-performance self-powered mechanical devices and monitoring systems, respectively.

scholarly journals Future Trend in Wearable Electronics in the Textile Industry

2021 ◽  
Vol 11 (9) ◽  
pp. 3914
Author(s):  
Chi-Wai Kan ◽  
Yin-Ling Lam
Keyword(s):  
Human Brain ◽  
Textile Industry ◽  
Wearable Technology ◽  
User Acceptance ◽  
Future Trend ◽  
Wearable Electronics ◽  
External Conditions ◽  
Electronic Textile ◽  
User Friendly ◽  
Smart Wearable

Smart wearable textiles can sense, react, and adapt themselves to external conditions or stimuli, and they can be divided into active and passive smart wearable textiles, which can work with the human brain for cognition, reasoning, and activating capacity. Wearable technology is among the fastest growing parts of health, entertainment, and education. In the future, the development of wearable electronics will be focused on multifunctional, user-friendly, and user acceptance and comfort features and shall be based on advanced electronic textile systems.

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 Functionalized Carbon Materials for Electronic Devices: A Review

Micromachines ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 234 ◽  
Author(s):  
Urooj Kamran ◽  
Young-Jung Heo ◽  
Ji Won Lee ◽  
Soo-Jin Park
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Materials ◽  
Electronic Devices ◽  
Pressure Sensors ◽  
Future Generation ◽  
High Specific Surface Area ◽  
Synthetic Methods ◽  
Energy Storage Devices ◽  
Self Powered ◽  
Walled Carbon Nanotubes

Carbon-based materials, including graphene, single walled carbon nanotubes (SWCNTs), and multi walled carbon nanotubes (MWCNTs), are very promising materials for developing future-generation electronic devices. Their efficient physical, chemical, and electrical properties, such as high conductivity, efficient thermal and electrochemical stability, and high specific surface area, enable them to fulfill the requirements of modern electronic industries. In this review article, we discuss the synthetic methods of different functionalized carbon materials based on graphene oxide (GO), SWCNTs, MWCNTs, carbon fibers (CFs), and activated carbon (AC). Furthermore, we highlight the recent developments and applications of functionalized carbon materials in energy storage devices (supercapacitors), inkjet printing appliances, self-powered automatic sensing devices (biosensors, gas sensors, pressure sensors), and stretchable/flexible wearable electronic devices.

An Efficient Switched-Capacitor DC-DC Buck Converter for Self-Powered Wearable Electronics

2016 ◽  
Vol 63 (10) ◽  
pp. 1557-1566 ◽  
Author(s):  
Dima Kilani ◽  
Mohammad Alhawari ◽  
Baker Mohammad ◽  
Hani Saleh ◽  
Mohammed Ismail
Keyword(s):  
Buck Converter ◽  
Switched Capacitor ◽  
Wearable Electronics ◽  
Self Powered

Nitrogen-Doped Mesoporous Carbon Derived from Polyaniline

2014 ◽  
Vol 926-930 ◽  
pp. 379-382
Author(s):  
De Yi Zhang ◽  
Li Wen Zheng ◽  
Long Yan Lei
Keyword(s):  
Mesoporous Carbon ◽  
Electronic Devices ◽  
Ordered Mesoporous Carbon ◽  
Additional Contribution ◽  
Electrochemical Capacitance ◽  
Supercapacitive Performance ◽  
Nitrogen Doped ◽  
Ordered Mesoporous ◽  
Capacitance Performance ◽  
A Current

In this paper, we demonstrate the successful fabrication of nitrogen doped ordered mesoporous carbon (PNOMC) materials using polyaniline as precursor. The synthesized PNOMC material exhibits enhanced supercapacitive performance due to the additional contribution from pseudo-capacitance originating from incorporation of nitrogen into the framework of carbon materials. Although the specific surface area of ​​the material is not high (386.2 m2/g), the specific capacitance is as high as the 271 F/g at a current density of 1A/g. The fabrication of nitrogen-doped ordered mesoporous carbon with enhanced electrochemical capacitance performance provides a viable route to promote its applications in electronic devices.

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....

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