Journal ArticleDOI
High-Performance Piezoelectric Nanogenerators with Imprinted P(VDF-TrFE)/BaTiO3 Nanocomposite Micropillars for Self-Powered Flexible Sensors.
Xiaoliang Chen,Xiangming Li,Jinyou Shao,Ningli An,Hongmiao Tian,Chao Wang,Tianyi Han,Li Wang,Bingheng Lu +8 more
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TLDR
Flexible piezoelectric nanogenerator can be applied as self-powered flexible sensor work in a noncontact mode for detecting air pressure and wearable sensors for detecting some human vital signs including different modes of breath and heartbeat pulse, which shows its potential applications in flexible electronics and medical sciences.Abstract:
Piezoelectric nanogenerators with large output, high sensitivity, and good flexibility have attracted extensive interest in wearable electronics and personal healthcare. In this paper, the authors propose a high-performance flexible piezoelectric nanogenerator based on piezoelectrically enhanced nanocomposite micropillar array of polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE))/barium titanate (BaTiO3 ) for energy harvesting and highly sensitive self-powered sensing. By a reliable and scalable nanoimprinting process, the piezoelectrically enhanced vertically aligned P(VDF-TrFE)/BaTiO3 nanocomposite micropillar arrays are fabricated. The piezoelectric device exhibits enhanced voltage of 13.2 V and a current density of 0.33 µA cm-2 , which an enhancement by a factor of 7.3 relatives to the pristine P(VDF-TrFE) bulk film. The mechanisms of high performance are mainly attributed to the enhanced piezoelectricity of the P(VDF-TrFE)/BaTiO3 nanocomposite materials and the improved mechanical flexibility of the micropillar array. Under mechanical impact, stable electricity is stably generated from the nanogenerator and used to drive various electronic devices to work continuously, implying its significance in the field of consumer electronic devices. Furthermore, it can be applied as self-powered flexible sensor work in a noncontact mode for detecting air pressure and wearable sensors for detecting some human vital signs including different modes of breath and heartbeat pulse, which shows its potential applications in flexible electronics and medical sciences.read more
Citations
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Smart Textiles for Electricity Generation.
TL;DR: With worldwide efforts, innovations in chemistry and materials elaborated in this review will push forward the frontiers of smart textiles, which will soon revolutionize the authors' lives in the era of Internet of Things.
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Flexible PVDF based piezoelectric nanogenerators
TL;DR: In this article, a critical review is presented to systematically summarize the recent advance of flexible PVDF based piezoelectric nanogenerators in the aspects of incorporating various nanofillers, structural design, optimizing fabrication techniques and energy harvesting application.
Journal ArticleDOI
Recent progress, challenges, and prospects of fully integrated mobile and wearable point-of-care testing systems for self-testing
TL;DR: This review discusses recent developments in the field of highly integrated mobile and wearable point-of-care testing (POCT) systems and highlights aspects of sample handling platforms, recognition elements and sensing methods, and new materials for signal transducers and powering devices for integration into mobile or wearable POCT systems.
Journal ArticleDOI
Flexible Capacitive Pressure Sensor Enhanced by Tilted Micropillar Arrays
Yongsong Luo,Jinyou Shao,Chen Shouren,Xiaoliang Chen,Hongmiao Tian,Xiangming Li,Liang Wang,Duorui Wang,Bingheng Lu +8 more
TL;DR: A capacitive sensor enhanced by a tilted micropillar array-structured dielectric layer is developed that allows the device to remain in normal use without the need for repair or replacement despite mechanical damage.
Journal ArticleDOI
An overview of lead-free piezoelectric materials and devices
Huige Wei,Hui Wang,Xia Yijie,Dapeng Cui,Yapeng Shi,Mengyao Dong,Mengyao Dong,Chuntai Liu,Tao Ding,Jiaoxia Zhang,Jiaoxia Zhang,Yong Ma,Yong Ma,Ning Wang,Zicheng Wang,Zicheng Wang,Ye Sun,Renbo Wei,Zhanhu Guo +18 more
TL;DR: In this article, a brief review on the most recent advances in both inorganic (with an emphasis on piezoelectric ceramics and ZnO nanostructures) and organic (i.e., polyvinylidene difluoride (PVDF) and its copolymers and their composites, and biopolymers) lead-free piezo-lectric materials is presented.
References
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Journal ArticleDOI
Piezoelectric Nanogenerators Based on Zinc Oxide Nanowire Arrays
TL;DR: This approach has the potential of converting mechanical, vibrational, and/or hydraulic energy into electricity for powering nanodevices.
Journal ArticleDOI
Prepare dispersed CIS nano-scale particles and spray coating CIS absorber layers using nano-scale precursors
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Journal ArticleDOI
Flexible Nanogenerators for Energy Harvesting and Self-Powered Electronics.
TL;DR: Progress in nanogenerators for mechanical energy harvesting is reviewed, mainly including two key technologies: flexible piezoelectric nanognerators (PENGs) and flexible triboelectrics nanogsenerators (TENGs).
Journal ArticleDOI
Nanotechnology-Enabled Energy Harvesting for Self-Powered Micro-/Nanosystems
Zhong Lin Wang,Wenzhuo Wu +1 more
TL;DR: Various approaches for energy harvesting to meet the future demand for self-powered MNSs are covered.
Journal ArticleDOI
Power generation with laterally packaged piezoelectric fine wires
TL;DR: A flexible power generator that is based on cyclic stretching-releasing of a piezoelectric fine wire that is firmly attached to metal electrodes at both ends, is packaged on a flexible substrate, and does not involve sliding contacts is reported.