scholarly journals Wearable Sensors: Recent Progress of Self-Powered Sensing Systems for Wearable Electronics (Small 45/2017)

Small ◽  
2017 ◽  
Vol 13 (45) ◽  
Author(s):  
Zheng Lou ◽  
La Li ◽  
Lili Wang ◽  
Guozhen Shen
Keyword(s):  
Recent Progress ◽  
Wearable Sensors ◽  
Wearable Electronics ◽  
Sensing Systems ◽  
Self Powered

scholarly journals Recent Progress of Self-Powered Sensing Systems for Wearable Electronics

Small ◽  
2017 ◽  
Vol 13 (45) ◽  
pp. 1701791 ◽  
Author(s):  
Zheng Lou ◽  
La Li ◽  
Lili Wang ◽  
Guozhen Shen
Keyword(s):  
Recent Progress ◽  
Wearable Electronics ◽  
Sensing Systems ◽  
Self Powered

scholarly journals Recent Progress in Wireless Sensors for Wearable Electronics

Sensors ◽  
2019 ◽  
Vol 19 (20) ◽  
pp. 4353 ◽  
Author(s):  
Young-Geun Park ◽  
Sangil Lee ◽  
Jang-Ung Park
Keyword(s):  
Communication Systems ◽  
Recent Progress ◽  
Contact Lenses ◽  
Wearable Sensors ◽  
Data Communication ◽  
Sensor Systems ◽  
Wearable Electronics ◽  
Wireless Power ◽  
Sensing Platforms ◽  
Art Research

The development of wearable electronics has emphasized user-comfort, convenience, security, and improved medical functionality. Several previous research studies transformed various types of sensors into a wearable form to more closely monitor body signals and enable real-time, continuous sensing. In order to realize these wearable sensing platforms, it is essential to integrate wireless power supplies and data communication systems with the wearable sensors. This review article discusses recent progress in wireless technologies and various types of wearable sensors. Also, state-of-the-art research related to the application of wearable sensor systems with wireless functionality is discussed, including electronic skin, smart contact lenses, neural interfaces, and retinal prostheses. Current challenges and prospects of wireless sensor systems are discussed.

scholarly journals Progress and Perspectives in Designing Flexible Microsupercapacitors

Micromachines ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1305
Author(s):  
La Li ◽  
Chuqiao Hu ◽  
Weijia Liu ◽  
Guozhen Shen
Keyword(s):  
Performance Improvement ◽  
Screen Printing ◽  
Implantable Devices ◽  
Wearable Electronics ◽  
Laser Etching ◽  
Sensing Systems ◽  
Future Challenges ◽  
Self Powered ◽  
Easy Integration ◽  
Made In

Miniaturized flexible microsupercapacitors (MSCs) that can be integrated into self-powered sensing systems, detecting networks, and implantable devices have shown great potential to perfect the stand-alone functional units owing to the robust security, continuously improved energy density, inherence high power density, and long service life. This review summarizes the recent progress made in the development of flexible MSCs and their application in integrated wearable electronics. To meet requirements for the scalable fabrication, minimization design, and easy integration of the flexible MSC, the typical assembled technologies consist of ink printing, photolithography, screen printing, laser etching, etc., are provided. Then the guidelines regarding the electrochemical performance improvement of the flexible MSC by materials design, devices construction, and electrolyte optimization are considered. The integrated prototypes of flexible MSC-powered systems, such as self-driven photodetection systems, wearable sweat monitoring units are also discussed. Finally, the future challenges and perspectives of flexible MSC are envisioned.

scholarly journals Nanogenerator-Based Self-Powered Sensors for Wearable and Implantable Electronics

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-25 ◽  
Author(s):  
Zhe Li ◽  
Qiang Zheng ◽  
Zhong Lin Wang ◽  
Zhou Li
Keyword(s):  
Wearable Sensors ◽  
Mechanical Vibration ◽  
Advanced Materials ◽  
Sensor Technology ◽  
Wearable Electronics ◽  
Energy Harvesters ◽  
Existing Problems ◽  
Core Components ◽  
Implantable Electronics ◽  
Self Powered

Wearable and implantable electronics (WIEs) are more and more important and attractive to the public, and they have had positive influences on all aspects of our lives. As a bridge between wearable electronics and their surrounding environment and users, sensors are core components of WIEs and determine the implementation of their many functions. Although the existing sensor technology has evolved to a very advanced level with the rapid progress of advanced materials and nanotechnology, most of them still need external power supply, like batteries, which could cause problems that are difficult to track, recycle, and miniaturize, as well as possible environmental pollution and health hazards. In the past decades, based upon piezoelectric, pyroelectric, and triboelectric effect, various kinds of nanogenerators (NGs) were proposed which are capable of responding to a variety of mechanical movements, such as breeze, body drive, muscle stretch, sound/ultrasound, noise, mechanical vibration, and blood flow, and they had been widely used as self-powered sensors and micro-nanoenergy and blue energy harvesters. This review focuses on the applications of self-powered generators as implantable and wearable sensors in health monitoring, biosensor, human-computer interaction, and other fields. The existing problems and future prospects are also discussed.

scholarly journals Fiber-Based Sensors and Energy Systems for Wearable Electronics

2021 ◽  
Vol 11 (2) ◽  
pp. 531
Author(s):  
Jungjoon Lee ◽  
Sungha Jeon ◽  
Hyeonyeob Seo ◽  
Jung Tae Lee ◽  
Seongjun Park
Keyword(s):  
Storage Systems ◽  
Wearable Sensors ◽  
Wearable Devices ◽  
Environmental Scanning ◽  
Wearable Electronics ◽  
Biomedical Sensors ◽  
Safety And Health ◽  
External Power Source ◽  
Self Powered ◽  
User Friendly

Wearable electronics have been receiving increasing attention for the past few decades. Particularly, fiber-based electronics are considered to be ideal for many applications for their flexibility, lightweight, breathability, and comfortability. Furthermore, fibers and fiber-based textiles can be 3D-molded with ease and potentially integrated with everyday clothes or accessories. These properties are especially desired in the fields of bio-related sensors and energy-storage systems. Wearable sensors utilize a tight interface with human skin and clothes for continuous environmental scanning and non-invasive health monitoring. At the same time, their flexible and lightweight properties allow more convenient and user-friendly experiences to the wearers. Similarly, for the wearable devices to be more accessible, it is crucial to incorporate energy harvesting and storage systems into the device themselves, removing the need to attach an external power source. This review summarizes the recent applications of fibers and fiber-based textiles in mechanical, photonic, and biomedical sensors. Pressure and strain sensors and their implementation as electronic skins will be explored, along with other various fiber sensors capable of imaging objects or monitoring safety and health markers. In addition, we attempt to elucidate recent studies in energy-storing fibers and their implication in self-powered and fully wireless wearable devices.

scholarly journals Conductance-stable liquid metal sheath-core microfibers for stretchy smart fabrics and self-powered sensing

2021 ◽  
Vol 7 (22) ◽  
pp. eabg4041
Author(s):  
Lijing Zheng ◽  
Miaomiao Zhu ◽  
Baohu Wu ◽  
Zhaoling Li ◽  
Shengtong Sun ◽  
...  
Keyword(s):  
Liquid Metal ◽  
Wearable Sensors ◽  
Geometric Distortion ◽  
Wearable Electronics ◽  
Resistance Change ◽  
Conductive Path ◽  
Smart Fabrics ◽  
Spinning Process ◽  
Self Powered ◽  
Metal Sheath

Highly conductive and stretchy fibers are crucial components for smart fabrics and wearable electronics. However, most of the existing fiber conductors are strain sensitive with deteriorated conductance upon stretching, and thus, a compromised strategy via introducing merely geometric distortion of conductive path is often used for stable conductance. Here, we report a coaxial wet-spinning process for continuously fabricating intrinsically stretchable, highly conductive yet conductance-stable, liquid metal sheath-core microfibers. The microfiber can be stretched up to 1170%, and upon fully activating the conductive path, a very high conductivity of 4.35 × 104 S/m and resistance change of only 4% at 200% strain are realized, arising from both stretch-induced channel opening and stretching out of tortuous serpentine conductive path of the percolating liquid metal network. Moreover, the microfibers can be easily woven into an everyday glove or fabric, acting as excellent joule heaters, electrothermochromic displays, and self-powered wearable sensors to monitor human activities.

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.

Recent progress in the development of sensing systems for in vivo detection of biological hydrogen sulfide

2021 ◽  
pp. 109451
Author(s):  
Jie Li ◽  
Zhe Su ◽  
Changmin Yu ◽  
Yan Yuan ◽  
Qiong Wu ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Recent Progress ◽  
Sensing Systems ◽  
In Vivo Detection

scholarly journals Recent Advances in Wearable Devices for Non-Invasive Sensing

2021 ◽  
Vol 11 (3) ◽  
pp. 1235
Author(s):  
Su Min Yun ◽  
Moohyun Kim ◽  
Yong Won Kwon ◽  
Hyobeom Kim ◽  
Mi Jung Kim ◽  
...  
Keyword(s):  
Health Monitoring ◽  
Data Transmission ◽  
Wearable Sensors ◽  
Wearable Devices ◽  
Wireless Power ◽  
Non Invasive ◽  
Sensing Systems ◽  
Recent Advances ◽  
Wearable Systems ◽  
Precise Diagnosis

The development of wearable sensors is aimed at enabling continuous real-time health monitoring, which leads to timely and precise diagnosis anytime and anywhere. Unlike conventional wearable sensors that are somewhat bulky, rigid, and planar, research for next-generation wearable sensors has been focused on establishing fully-wearable systems. To attain such excellent wearability while providing accurate and reliable measurements, fabrication strategies should include (1) proper choices of materials and structural designs, (2) constructing efficient wireless power and data transmission systems, and (3) developing highly-integrated sensing systems. Herein, we discuss recent advances in wearable devices for non-invasive sensing, with focuses on materials design, nano/microfabrication, sensors, wireless technologies, and the integration of those.

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