Mortise–tenon joint structured hydrophobic surface-functionalized barium titanate/polyvinylidene fluoride nanocomposites for printed self-powered wearable sensors

Nanoscale ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 2542-2555
Author(s):  
Hai Li ◽  
Hoseong Song ◽  
Mengjie Long ◽  
Ghuzanfar Saeed ◽  
Sooman Lim
Keyword(s):  
Barium Titanate ◽  
Composite Film ◽  
Polyvinylidene Fluoride ◽  
Wearable Sensors ◽  
Hydrophobic Surface ◽  
Wearable Devices ◽  
Excellent Performance ◽  
3D Printed ◽  
Self Powered

This 3D-printed self-powered sensor based on the surface hydrophobic functionalized FD-BTO/PVDF composite film exhibits excellent performance and can contribute significantly to the development of printed electronic wearable devices.

scholarly journals Wearable Woven Triboelectric Nanogenerator Utilizing Electrospun PVDF Nanofibers for Mechanical Energy Harvesting

Micromachines ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 438 ◽  
Author(s):  
Muhammad Omar Shaikh ◽  
Yu-Bin Huang ◽  
Cheng-Chien Wang ◽  
Cheng-Hsin Chuang
Keyword(s):  
Polyvinylidene Fluoride ◽  
Mechanical Energy ◽  
Wearable Devices ◽  
Human Motion ◽  
Triboelectric Nanogenerator ◽  
Free Standing ◽  
Β Phase ◽  
Applied Forces ◽  
Self Powered ◽  
High Output Voltage

Several wearable devices have already been commercialized and are likely to open up a new life pattern for consumers. However, the limited energy capacity and lifetime have made batteries the bottleneck in wearable technology. Thus, there have been growing efforts in the area of self-powered wearables that harvest ambient mechanical energy directly from surroundings. Herein, we demonstrate a woven triboelectric nanogenerator (WTENG) utilizing electrospun Polyvinylidene fluoride (PVDF) nanofibers and commercial nylon cloth to effectively harvest mechanical energy from human motion. The PVDF nanofibers were fabricated using a highly scalable multi-nozzle far-field centrifugal electrospinning protocol. We have also doped the PVDF nanofibers with small amounts of multi-walled carbon nanotubes (MWCNT) to improve their triboelectric performance by facilitating the growth of crystalline β-phase with a high net dipole moment that results in enhanced surface charge density during contact electrification. The electrical output of the WTENG was characterized under a range of applied forces and frequencies. The WTENG can be triggered by various free-standing triboelectric layers and reaches a high output voltage and current of about 14 V and 0.7 µA, respectively, for the size dimensions 6 × 6 cm. To demonstrate the potential applications and feasibility for harvesting energy from human motion, we have integrated the WTENG into human clothing and as a floor mat (or potential energy generating shoe). The proposed triboelectric nanogenerator (TENG) shows promise for a range of power generation applications and self-powered wearable devices.

scholarly journals Correction: Flexible composite film of aligned polyaniline grown on the surface of magnetic barium titanate/polyvinylidene fluoride for exceptional microwave absorption performance

RSC Advances ◽  
2018 ◽  
Vol 8 (47) ◽  
pp. 26938-26938
Author(s):  
Lujun Yu ◽  
Yaofeng Zhu ◽  
Yaqin Fu
Keyword(s):  
Barium Titanate ◽  
Composite Film ◽  
Microwave Absorption ◽  
Polyvinylidene Fluoride ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Correction for ‘Flexible composite film of aligned polyaniline grown on the surface of magnetic barium titanate/polyvinylidene fluoride for exceptional microwave absorption performance’ by Lujun Yu et al., RSC Adv., 2017, 7, 36473–36481.

Photoreceptor characteristics of barium titanate/polyvinylidene fluoride composite film

1990 ◽  
Author(s):  
P. K. C. Pillai ◽  
James J. Lew ◽  
Athanasios Gavrielides ◽  
Christopher M. Clayton
Keyword(s):  
Barium Titanate ◽  
Composite Film ◽  
Polyvinylidene Fluoride

Photoelectret and electrophotographic properties of barium titanate-polyvinylidene fluoride composite film

1991 ◽  
Vol 26 (10) ◽  
pp. 2671-2676 ◽  
Author(s):  
P. K. C. Pillai ◽  
J. J. Lew ◽  
A. Gavrielides ◽  
C. M. Clayton
Keyword(s):  
Barium Titanate ◽  
Composite Film ◽  
Polyvinylidene Fluoride ◽  
Electrophotographic Properties

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.

Enabling Batteryless Wearable Devices by Transferring Power Through The Human Body

2021 ◽  
Vol 24 (3) ◽  
pp. 30-34
Author(s):  
Rishi Shukla ◽  
Neev Kiran ◽  
Rui Wang ◽  
Jeremy Gummeson ◽  
Sunghoon Ivan Lee
Keyword(s):  
Energy Source ◽  
Low Power ◽  
Human Body ◽  
Wearable Sensors ◽  
Primary Energy ◽  
Wearable Devices ◽  
Ultra Low Power ◽  
The Past ◽  
Key Barrier

Over the past few decades, we have witnessed tremendous advancements in semiconductor and MEMS technologies, leading to the proliferation of ultra-miniaturized and ultra-low-power (in micro-watt ranges) wearable devices for wellness and healthcare [1]. Most of these wearable sensors are battery powered for their operation. The use of an on-device battery as the primary energy source poses a number of challenges that serve as the key barrier to the development of novel wearable applications and the widespread use of numerous, seamless wearable sensors [5].

3D Printed Smart Silk Wearable Sensors

The Analyst ◽  
2021 ◽  
Author(s):  
Tianshu Chu ◽  
Huili Wang ◽  
Yumeng Qiu ◽  
Haoxi Luo ◽  
Bingfang He ◽  
...  
Keyword(s):  
Point Of Care ◽  
Wearable Sensors ◽  
Point Of Care Testing ◽  
Biochemical Sensing ◽  
3D Printed ◽  
Physiological And Biochemical

Wearable sensors play a key role in point-of-care testing (POCT) for its flexible and integration capability on sensitive physiological and biochemical sensing. Here, we present a multifunction wearable silk patch...

3D printed stretchable smart fibers and textiles for self-powered e-skin

Nano Energy ◽  
2021 ◽  
Vol 84 ◽  
pp. 105866 ◽  
Author(s):  
Yuxin Chen ◽  
Zhirong Deng ◽  
Ri Ouyang ◽  
Renhao Zheng ◽  
Zhiqiang Jiang ◽  
...  
Keyword(s):  
3D Printed ◽  
Self Powered
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