scholarly journals Organic/Inorganic Hybrid Stretchable Piezoelectric Nanogenerators for Self-Powered Wearable Electronics

2017 ◽  
Vol 3 (2) ◽  
pp. 1700249 ◽  
Author(s):  
Abhishek S. Dahiya ◽  
Francois Morini ◽  
Sarah Boubenia ◽  
Kevin Nadaud ◽  
Daniel Alquier ◽  
...  
Keyword(s):  
Wearable Electronics ◽  
Inorganic Hybrid ◽  
Self Powered ◽  
Piezoelectric Nanogenerators

Piezoelectricity and Flexoelectricity from an Energy Harvesting Perspective: Nanogenerators

2021 ◽  
Vol 30 (9) ◽  
pp. 11-15
Author(s):  
Yoon-Hwae HWANG
Keyword(s):  
Energy Harvesting ◽  
Mechanical Energy ◽  
Electric Energy ◽  
Wearable Electronics ◽  
Power Sources ◽  
Sufficient Power ◽  
External Sources ◽  
Self Powered ◽  
Energy Harvesting Devices ◽  
Piezoelectric Nanogenerators

Energy harvesting is the process by which energy can be obtained from external sources and used for wearable electronics and wireless sensor networks. Piezoelectric nanogenerators are energy harvesting devices that convert mechanical energy into electric energy by using nanostructured materials. This article summarizes work to date on piezoelectric nanogenerators, starting with the basic theory of piezo- and flexo-electricity and moving through reports on nanogenerators using nanostructures, flexible substrates and alternative materials. A sufficient power generated from nanogenerators suggests feasible applications for either power sources or strain sensors of highly integrated nanodevices. Further improvements in nanogenerators holds promise for the development of self-powered implantable and wearable electronics.

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.

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

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.

A self-powered solar-blind photodetector with large Voc enhancing performance based on the PEDOT:PSS/Ga2O3 organic–inorganic hybrid heterojunction

2020 ◽  
Vol 8 (4) ◽  
pp. 1292-1300 ◽  
Author(s):  
Shan Li ◽  
Zuyong Yan ◽  
Zeng Liu ◽  
Jun Chen ◽  
Yusong Zhi ◽  
...  
Keyword(s):  
Inorganic Hybrid ◽  
Solar Blind ◽  
Self Powered

A self-powered solar-blind photodetector with large Voc enhancing performance is constructed on the PEDOT:PSS/Ga2O3 hybrid heterojunction.

Correction to Self-Powered pH Sensor Based on a Flexible Organic–Inorganic Hybrid Composite Nanogenerator

2015 ◽  
Vol 7 (3) ◽  
pp. 2135-2135
Author(s):  
Balasubramaniam Saravanakumar ◽  
Shin Soyoon ◽  
Sang-Jae Kim
Keyword(s):  
Hybrid Composite ◽  
Ph Sensor ◽  
Inorganic Hybrid ◽  
Self Powered
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