共查询到20条相似文献,搜索用时 19 毫秒
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Vitrimer Elastomer‐Based Jigsaw Puzzle‐Like Healable Triboelectric Nanogenerator for Self‐Powered Wearable Electronics 下载免费PDF全文
Jianan Deng Xiao Kuang Ruiyuan Liu Wenbo Ding Aurelia C. Wang Ying‐Chih Lai Kai Dong Zhen Wen Yaxian Wang Lili Wang H. Jerry Qi Tong Zhang Zhong Lin Wang 《Advanced materials (Deerfield Beach, Fla.)》2018,30(14)
Functional polymers possess outstanding uniqueness in fabricating intelligent devices such as sensors and actuators, but they are rarely used for converting mechanical energy into electric power. Here, a vitrimer based triboelectric nanogenerator (VTENG) is developed by embedding a layer of silver nanowire percolation network in a dynamic disulfide bond‐based vitrimer elastomer. In virtue of covalent dynamic disulfide bonds in the elastomer matrix, a thermal stimulus enables in situ healing if broken, on demand reconfiguration of shape, and assembly of more sophisticated structures of VTENG devices. On rupture or external damage, the structural integrity and conductivity of VTENG are restored under rapid thermal stimulus. The flexible and stretchable VTENG can be scaled up akin to jigsaw puzzles and transformed from 2D to 3D structures. It is demonstrated that this self‐healable and shape‐adaptive VTENG can be utilized for mechanical energy harvesters and self‐powered tactile/pressure sensors with extended lifetime and excellent design flexibility. These results show that the incorporation of organic materials into electronic devices can not only bestow functional properties but also provide new routes for flexible device fabrication. 相似文献
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Zhirong Liu Jinhui Nie Bin Miao Jiadong Li Yuanbo Cui Shu Wang Xiaodi Zhang Gengrui Zhao Yongbo Deng Yihui Wu Zhou Li Linlin Li Zhong Lin Wang 《Advanced materials (Deerfield Beach, Fla.)》2019,31(12)
Nondestructive, high‐efficiency, and on‐demand intracellular drug/biomacromolecule delivery for therapeutic purposes remains a great challenge. Herein, a biomechanical‐energy‐powered triboelectric nanogenerator (TENG)‐driven electroporation system is developed for intracellular drug delivery with high efficiency and minimal cell damage in vitro and in vivo. In the integrated system, a self‐powered TENG as a stable voltage pulse source triggers the increase of plasma membrane potential and membrane permeability. Cooperatively, the silicon nanoneedle‐array electrode minimizes cellular damage during electroporation via enhancing the localized electrical field at the nanoneedle–cell interface and also decreases plasma membrane fluidity for the enhancement of molecular influx. The integrated system achieves efficient delivery of exogenous materials (small molecules, macromolecules, and siRNA) into different types of cells, including hard‐to‐transfect primary cells, with delivery efficiency up to 90% and cell viability over 94%. Through simple finger friction or hand slapping of the wearable TENGs, it successfully realizes a transdermal biomolecule delivery with an over threefold depth enhancement in mice. This integrated and self‐powered system for active electroporation drug delivery shows great prospect for self‐tuning drug delivery and wearable medicine. 相似文献
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Inductor‐Free Wireless Energy Delivery via Maxwell's Displacement Current from an Electrodeless Triboelectric Nanogenerator 下载免费PDF全文
Wireless power delivery has been a dream technology for applications in medical science, security, radio frequency identification (RFID), and the internet of things, and is usually based on induction coils and/or antenna. Here, a new approach is demonstrated for wireless power delivery by using the Maxwell's displacement current generated by an electrodeless triboelectric nanogenerator (TENG) that directly harvests ambient mechanical energy. A rotary electrodeless TENG is fabricated using the contact and sliding mode with a segmented structure. Due to the leakage of electric field between the segments during relative rotation, the generated Maxwell's displacement current in free space is collected by metal collectors. At a gap distance of 3 cm, the output wireless current density and voltage can reach 7 µA cm−2 and 65 V, respectively. A larger rotary electrodeless TENG and flexible wearable electrodeless TENG are demonstrated to power light‐emitting diodes (LEDs) through wireless energy delivery. This innovative discovery opens a new avenue for noncontact, wireless energy transmission for applications in portable and wearable electronics. 相似文献
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Actively Perceiving and Responsive Soft Robots Enabled by Self‐Powered,Highly Extensible,and Highly Sensitive Triboelectric Proximity‐ and Pressure‐Sensing Skins 下载免费PDF全文
Ying‐Chih Lai Jianan Deng Ruiyuan Liu Yung‐Chi Hsiao Steven L. Zhang Wenbo Peng Hsing‐Mei Wu Xingfu Wang Zhong Lin Wang 《Advanced materials (Deerfield Beach, Fla.)》2018,30(28)
Robots that can move, feel, and respond like organisms will bring revolutionary impact to today's technologies. Soft robots with organism‐like adaptive bodies have shown great potential in vast robot–human and robot–environment applications. Developing skin‐like sensory devices allows them to naturally sense and interact with environment. Also, it would be better if the capabilities to feel can be active, like real skin. However, challenges in the complicated structures, incompatible moduli, poor stretchability and sensitivity, large driving voltage, and power dissipation hinder applicability of conventional technologies. Here, various actively perceivable and responsive soft robots are enabled by self‐powered active triboelectric robotic skins (tribo‐skins) that simultaneously possess excellent stretchability and excellent sensitivity in the low‐pressure regime. The tribo‐skins can actively sense proximity, contact, and pressure to external stimuli via self‐generating electricity. The driving energy comes from a natural triboelectrification effect involving the cooperation of contact electrification and electrostatic induction. The perfect integration of the tribo‐skins and soft actuators enables soft robots to perform various actively sensing and interactive tasks including actively perceiving their muscle motions, working states, textile's dampness, and even subtle human physiological signals. Moreover, the self‐generating signals can drive optoelectronic devices for visual communication and be processed for diverse sophisticated uses. 相似文献
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A Self‐Charging Power Unit by Integration of a Textile Triboelectric Nanogenerator and a Flexible Lithium‐Ion Battery for Wearable Electronics 下载免费PDF全文
Xiong Pu Linxuan Li Huanqiao Song Chunhua Du Zhengfu Zhao Chunyan Jiang Guozhong Cao Weiguo Hu Zhong Lin Wang 《Advanced materials (Deerfield Beach, Fla.)》2015,27(15):2472-2478
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Roll‐to‐Roll Green Transfer of CVD Graphene onto Plastic for a Transparent and Flexible Triboelectric Nanogenerator 下载免费PDF全文
Bananakere Nanjegowda Chandrashekar Bing Deng Ankanahalli Shankaregowda Smitha Yubin Chen Congwei Tan Haixia Zhang Hailin Peng Zhongfan Liu 《Advanced materials (Deerfield Beach, Fla.)》2015,27(35):5210-5216
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On‐Skin Triboelectric Nanogenerator and Self‐Powered Sensor with Ultrathin Thickness and High Stretchability 下载免费PDF全文
Xiangyu Chen Yali Wu Jiajia Shao Tao Jiang Aifang Yu Liang Xu Zhong Lin Wang 《Small (Weinheim an der Bergstrasse, Germany)》2017,13(47)
Researchers have devoted a lot of efforts on pursuing light weight and high flexibility for the wearable electronics, which also requires the related energy harvesting devices to have ultrathin thickness and high stretchability. Hence, an elastic triboelectric nanogenerator (TENG) is proposed that can serve as the second skin on human body. The total thickness of this TENG is about 102 µm and the device can work durably under a strain of 100%. The carbon grease is painted on the surface of elastomer film to work as stretchable electrode and thus the fine geometry control of the electrode can be achieved. This elastic TENG can even work on the human fingers without disturbing body movement. The open‐circuit voltage and short‐circuit current from the device with a contact area of 9 cm2 can reach 115 V and 3 µA, respectively. Two kinds of self‐powered sensor systems with optimized identification strategies are also designed to demonstrate the application possibility of this elastic TENG. The superior characteristics of ultrathin thickness, high stretchability, and fine geometry control of this TENG can promote many potential applications in the field of wearable self‐powered sensory system, electronics skin, artificial muscles, and soft robotics. 相似文献
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Single‐Step Fluorocarbon Plasma Treatment‐Induced Wrinkle Structure for High‐Performance Triboelectric Nanogenerator 下载免费PDF全文
Xiaoliang Cheng Bo Meng Xuexian Chen Mengdi Han Haotian Chen Zongming Su Mayue Shi Haixia Zhang 《Small (Weinheim an der Bergstrasse, Germany)》2016,12(2):229-236
A triboelectric nanogenerator (TENG) has been thought to be a promising method to harvest energy from environment. To date, the utilization of surface structure and material modification has been considered the most effective way to increase its performance. In this work, a wrinkle structure based high‐performance TENG is presented. Using the fluorocarbon plasma treatment method, material modification and surface structure are introduced in one step. The output ability of TENG is dramatically enhanced. After the optimization of plasma treatment, the maximum current and surface charge density are 182 μA about 165 μC m?2. Compared with untreated TENG, the wrinkle structure makes the current and surface charge density increase by 810% and 528%, separately. X‐ray photoelectron spectroscopy is employed to analyze the chemical modification mechanism of this fluorocarbon plasma treatment. Facilitated by its high output performance, this device could directly light 76 blue light emitting diodes under finger typing. The output electric energy could be stored then utilized to power a commercial calculator. As a result of the simple fabrication process and high output ability, devices fabricated using this method could bring forward practical applications using TENGs as power sources. 相似文献
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Electric Eel‐Skin‐Inspired Mechanically Durable and Super‐Stretchable Nanogenerator for Deformable Power Source and Fully Autonomous Conformable Electronic‐Skin Applications 下载免费PDF全文
Ying‐Chih Lai Jianan Deng Simiao Niu Wenbo Peng Changsheng Wu Ruiyuan Liu Zhen Wen Zhong Lin Wang 《Advanced materials (Deerfield Beach, Fla.)》2016,28(45):10024-10032
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Triboelectric Nanogenerator Accelerates Highly Efficient Nonviral Direct Conversion and In Vivo Reprogramming of Fibroblasts to Functional Neuronal Cells 下载免费PDF全文
Yoonhee Jin Jungmok Seo Jung Seung Lee Sera Shin Hyun‐Ji Park Sungjin Min Eunji Cheong Taeyoon Lee Seung‐Woo Cho 《Advanced materials (Deerfield Beach, Fla.)》2016,28(34):7365-7374
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Triboelectric Nanogenerator Devices: Triboelectric Nanogenerator Accelerates Highly Efficient Nonviral Direct Conversion and In Vivo Reprogramming of Fibroblasts to Functional Neuronal Cells (Adv. Mater. 34/2016) 下载免费PDF全文
Yoonhee Jin Jungmok Seo Jung Seung Lee Sera Shin Hyun‐Ji Park Sungjin Min Eunji Cheong Taeyoon Lee Seung‐Woo Cho 《Advanced materials (Deerfield Beach, Fla.)》2016,28(34):7293-7293
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Han Ouyang Jingjing Tian Guanglong Sun Yang Zou Zhuo Liu Hu Li Luming Zhao Bojing Shi Yubo Fan Yifan Fan Zhong Lin Wang Zhou Li 《Advanced materials (Deerfield Beach, Fla.)》2017,29(40)
Cardiovascular diseases are the leading cause of death globally; fortunately, 90% of cardiovascular diseases are preventable by long‐term monitoring of physiological signals. Stable, ultralow power consumption, and high‐sensitivity sensors are significant for miniaturized wearable physiological signal monitoring systems. Here, this study proposes a flexible self‐powered ultrasensitive pulse sensor (SUPS) based on triboelectric active sensor with excellent output performance (1.52 V), high peak signal‐noise ratio (45 dB), long‐term performance (107 cycles), and low cost price. Attributed to the crucial features of acquiring easy‐processed pulse waveform, which is consistent with second derivative of signal from conventional pulse sensor, SUPS can be integrated with a bluetooth chip to provide accurate, wireless, and real‐time monitoring of pulse signals of cardiovascular system on a smart phone/PC. Antidiastole of coronary heart disease, atrial septal defect, and atrial fibrillation are made, and the arrhythmia (atrial fibrillation) is indicative diagnosed from health, by characteristic exponent analysis of pulse signals accessed from volunteer patients. This SUPS is expected to be applied in self‐powered, wearable intelligent mobile diagnosis of cardiovascular disease in the future. 相似文献