The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Zhong Lin Wang - One of the best experts on this subject based on the ideXlab platform.
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self powered cardiovascular electronic devices and systems
Nature Reviews Cardiology, 2021Co-Authors: Qiang Zheng, Zhong Lin Wang, Qizhu TangAbstract:Cardiovascular electronic devices have enormous benefits for health and quality of life but the long-term operation of these implantable and wearable devices remains a huge challenge owing to the limited life of batteries, which increases the risk of device failure and causes uncertainty among patients. A possible approach to overcoming the challenge of limited battery life is to harvest energy from the body and its ambient environment, including biomechanical, solar, thermal and biochemical energy, so that the devices can be Self-Powered. This strategy could allow the development of advanced features for cardiovascular electronic devices, such as extended life, miniaturization to improve comfort and conformability, and functions that integrate with real-time data transmission, mobile data processing and smart power utilization. In this Review, we present an update on Self-Powered cardiovascular implantable electronic devices and wearable active sensors. We summarize the existing Self-Powered technologies and their fundamental features. We then review the current applications of Self-Powered electronic devices in the cardiovascular field, which have two main goals. The first is to harvest energy from the body as a sustainable power source for cardiovascular electronic devices, such as cardiac pacemakers. The second is to use Self-Powered devices with low power consumption and high performance as active sensors to monitor physiological signals (for example, for active endocardial monitoring). Finally, we present the current challenges and future perspectives for the field.
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flame retardant textile based triboelectric nanogenerators for fire protection applications
ACS Nano, 2020Co-Authors: Renwei Cheng, Zhong Lin Wang, Kai Dong, Longxiang Liu, Chuan Ning, Pengfei Chen, Xiao Peng, Di LiuAbstract:Textile-based triboelectric nanogenerators (T-TENGs), combining the functions of energy harvesting and Self-Powered sensing with advantages of breathability and flexibility, have received intensive attention, which is vital to the rapid advancements in smart textiles. However, there exists few reports of T-TENGs applied to fires under the intelligent era of high requirements for devices with versatility and multiscenario practicability. Here, in combination with flame-retardant conductive cotton fabric, polytetrafluoroethylene-coated cotton fabric, and a divider, a low-cost and environmentally friendly flame-retardant textile-based triboelectric nanogenerator (FT-TENG) is developed, which is endowed with excellent fire resistance and outstanding energy harvesting capabilities. The cotton fabrics treated with a layer-by-layer self-assembly method show great self-extinguishing performance. Besides, the maximum peak power density of the FT-TENG can reach 343.19 mW/m2 under the tapping frequency of 3 Hz. Furthermore, the FT-TENG still keeps 49.2% of the initial electrical output even after being burned at 17 different positions; 34.48% of the electrical output is also retained when the FT-TENG is exposed to 220 °C. Moreover, the FT-TENGs are successfully applied as energy harvesters for firefighters and Self-Powered sensors for forest self-rescue and fire alarm systems. This work may provide a promising potential for multifunctional smart textiles in energy harvesting, Self-Powered sensing, and life or property security.
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high throughput and self powered electroporation system for drug delivery assisted by microfoam electrode
ACS Nano, 2020Co-Authors: Zhirong Liu, Zhong Lin Wang, Tao Jiang, Xi Liang, Huanhuan Liu, Zhuo Wang, Yuanyuan Cheng, Deli XiangAbstract:Electroporation is an effective approach for drug and gene delivery, but it is still limited by its low-throughput and severe cell damage. Herein, with a Self-Powered triboelectric nanogenerator as the power source, we demonstrated a high-throughput electroporation system based on the design of biocompatible and flexible polypyrrole microfoam as the electrode within the flow channel. In particular, to lower the imposed voltage, one-dimensional (1D) Ag nanowires were modified on the microfoam electrode to build up a locally enhanced electric field and reduce cell damage. The Self-Powered electroporation system realized a successful delivery of small and large biomolecules into different cell lines with efficiency up to 86% and cell viability over 88%. The handle throughput achieved as high as 105 cells min-1 on continuously flowed cells. The high-throughput and Self-Powered electroporation system is expected to have potential applications in the fields of high-throughput drug and gene delivery for in vitro isolated cells.
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thermo photoelectric coupled effect induced electricity in n type snse br single crystals for enhanced self powered photodetectors
Nano Energy, 2019Co-Authors: Bangsen Ouyang, Zhong Lin Wang, Cheng Chang, Lidong Zhao, Ya YangAbstract:Abstract Self-Powered photodetectors (PDs) have attracted great attentions due to energy shortage and the upcoming internet of things. However, the bottleneck of traditional methods to enhance the output performances of Self-Powered PDs are largely limited. Here, we report a dramatic coupling enhancement ("1 + 1>2") of the output signals in a bromine doped tin selenide (SnSe:Br) single crystal due to the thermo-photoelectric coupled effect for enhanced Self-Powered PDs. As compared with that of individually illuminating the device, both the output current and voltage signals of the PD can be enhanced by 38.1% and 81.9% under the simultaneous illumination at the top surface and cooling at the bottom surface, respectively. The coupling enhancement mechanism is associated with the same polarities of photoelectric and thermoelectric signals during the cooling process, where the photo-generated electrons can be accelerated by the driving force of the thermoelectric field under the cooling condition. This work offers a novel approach to enhance the output performances of Self-Powered PDs.
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embedded self powered sensing systems for smart vehicles and intelligent transportation
Nano Energy, 2019Co-Authors: Hassan Askari, Amir Khajepour, Mir Behrad Khamesee, Zhong Lin WangAbstract:Abstract With the current changes in the automotive industry, vehicles need more and more advanced sensors for control, safety, monitoring, perception, and operation. With the current technological advancements, our cars are becoming more computers on wheels. There are more than one hundred sensors in a vehicle that many of them have the potential to be replaced with nanogenerators (NGs)-based Self-Powered sensors. In this article, we aim to investigate and propose Self-Powered sensors for different sensing applications in vehicles. Furthermore, we discuss how leveraging nanogenerators can be beneficial in bolstering intelligent transportation systems. Several conceptual ideas and designs for Self-Powered sensors in automotive-related systems are presented and discussed based on the current status of research in this area. The importance of Self-Powered sensors in vehicles are further elaborated and the energy harvesting potential of nanogenerators are shown for a few vehicle systems. Challenges, design concerns and the future impacts of Self-Powered sensing in automotive and traffic monitoring systems are fully discussed. It is delineated how the application of nanogenerators could accelerate the realization of fully smart vehicles and intelligent transportation.
Qiang Zheng - One of the best experts on this subject based on the ideXlab platform.
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self powered cardiovascular electronic devices and systems
Nature Reviews Cardiology, 2021Co-Authors: Qiang Zheng, Zhong Lin Wang, Qizhu TangAbstract:Cardiovascular electronic devices have enormous benefits for health and quality of life but the long-term operation of these implantable and wearable devices remains a huge challenge owing to the limited life of batteries, which increases the risk of device failure and causes uncertainty among patients. A possible approach to overcoming the challenge of limited battery life is to harvest energy from the body and its ambient environment, including biomechanical, solar, thermal and biochemical energy, so that the devices can be Self-Powered. This strategy could allow the development of advanced features for cardiovascular electronic devices, such as extended life, miniaturization to improve comfort and conformability, and functions that integrate with real-time data transmission, mobile data processing and smart power utilization. In this Review, we present an update on Self-Powered cardiovascular implantable electronic devices and wearable active sensors. We summarize the existing Self-Powered technologies and their fundamental features. We then review the current applications of Self-Powered electronic devices in the cardiovascular field, which have two main goals. The first is to harvest energy from the body as a sustainable power source for cardiovascular electronic devices, such as cardiac pacemakers. The second is to use Self-Powered devices with low power consumption and high performance as active sensors to monitor physiological signals (for example, for active endocardial monitoring). Finally, we present the current challenges and future perspectives for the field.
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Symbiotic cardiac pacemaker
Nature Communications, 2019Co-Authors: Han Ouyang, Ye Ma, Zhuo Liu, Hu Li, Yang Zou, Zhe Li, Bojing Shi, Ning Li, Feng Xie, Qiang ZhengAbstract:Self-Powered implantable medical electronic devices that harvest biomechanical energy from cardiac motion, respiratory movement and blood flow are part of a paradigm shift that is on the horizon. Here, we demonstrate a fully implanted symbiotic pacemaker based on an implantable triboelectric nanogenerator, which achieves energy harvesting and storage as well as cardiac pacing on a large-animal scale. The symbiotic pacemaker successfully corrects sinus arrhythmia and prevents deterioration. The open circuit voltage of an implantable triboelectric nanogenerator reaches up to 65.2 V. The energy harvested from each cardiac motion cycle is 0.495 μJ, which is higher than the required endocardial pacing threshold energy (0.377 μJ). Implantable triboelectric nanogenerators for implantable medical devices offer advantages of excellent output performance, high power density, and good durability, and are expected to find application in fields of treatment and diagnosis as in vivo symbiotic bioelectronics.Implantable medical electronic devices are limited by battery lifetime and inflexibility, but Self-Powered devices can harvest biomechanical energy. Here the authors demonstrate cardiac pacing and correction of sinus arrhythmia with a symbiotic cardiac pacemaker, which is an implanted Self-Powered pacing system powered by cardiac motion, in a swine.
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Symbiotic cardiac pacemaker
Nature Publishing Group, 2019Co-Authors: Han Ouyang, Zhuo Liu, Yang Zou, Bojing Shi, Feng Xie, Qiang ZhengAbstract:Implantable medical electronic devices are limited by battery lifetime and inflexibility, but Self-Powered devices can harvest biomechanical energy. Here the authors demonstrate cardiac pacing and correction of sinus arrhythmia with a symbiotic cardiac pacemaker, which is an implanted Self-Powered pacing system powered by cardiac motion, in a swine
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a packaged self powered system with universal connectors based on hybridized nanogenerators
Advanced Materials, 2016Co-Authors: Bojing Shi, Qiang Zheng, Ling Yan, Xinxin Wang, Yan Yao, Wen Jiang, Hong Liu, Zhou LiAbstract:A packaged Self-Powered system by hybridizing nanogenerators (PSNGS) is demonstrated. The performance of the PSNGS is tested in a biofluid and used for powering an electronic thermometer. Select waterproof universal connectors are designed and fabricated for energy and signal transmission. This PSNGS and the connectors can significantly advance the development of Self-Powered implanted medical devices and wearable/portable electronics.
J. Chen - One of the best experts on this subject based on the ideXlab platform.
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progress in triboelectric nanogenerators as self powered smart sensors
Journal of Materials Research, 2017Co-Authors: Nannan Zhang, J. ChenAbstract:Personal, multifunctional, and smart electronic devices/systems are indispensable components of the internet of things for modern information collection and exchange, which play a key role in facilitating the development of human civilization. Traditional technique for powering these sensor nodes mainly relies on batteries, which may not be favorable owing to the limited battery lifetime, large sensor population, wide distribution, as well as the potential of environmental detriment. Extricated from external power sources, triboelectric nanogenerators (TENGs) based active sensors have been extensively spread into a variety of fields for Self-Powered high-performance sensing, featured as being lightweight, extremely cost-effective, and environmentally friendly. In this article, current progress of TENGs as smart sensors for Self-Powered touch detection, vibration and acoustic sensing, biomedical applications, as well as human-machine interfacing, has been comprehensively reviewed, from aspects of materials usage, device fabrication to practical applications. The latest representative achievements regarding the TENG based Self-Powered sensing systems were also systematically presented. In the end, some perspectives and challenges for the TENG based Self-Powered smart sensors were also summarized.
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Self-Powered Sensing for Human-Machine Interface
Triboelectric Nanogenerators, 2016Co-Authors: Zhong Lin Wang, J. Chen, Long Lin, Simiao NiuAbstract:In this chapter, we discussed the first type of pressure/touch sensor based on TENG. In general, the pressure response contains a high sensitivity region at relatively low pressure, and a low sensitivity region at higher pressure. Possible explanations of this behavior include full closing of air gap or saturation of increasing contact area between the touch object and the device. It has been demonstrated that the open-circuit voltage could be employed for static pressure detection to obtain the amplitude of the applied pressure, while the short-circuit current mainly reveals the dynamic information of the applied pressure like loading rate or acceleration. To achieve the goal of Self-Powered tactile imaging, multiple triboelectric active sensor units were integrated into a matrix with a common aluminum electrode at the bottom. The TENG sensors have been further incorporated in a keyboard structure for Self-Powered human-machine interface. The polymer-coated smart keyboard has the function of recognize personal typing patterns to achieve security authentication of personal electronics. This new concept of human-machine interface has numerous potential applications in next-generation smart electronics and wearable devices.
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self powered sensingself powered sensing for human machine interfacehuman machine interface
2016Co-Authors: J. Chen, Zhong Lin Wang, Yunlong ZiAbstract:In this chapter, we discussed the first type of pressure/touch sensor based on TENG. In general, the pressure response contains a high sensitivity region at relatively low pressure, and a low sensitivity region at higher pressure. Possible explanations of this behavior include full closing of air gap or saturation of increasing contact area between the touch object and the device. It has been demonstrated that the open-circuit voltage could be employed for static pressure detection to obtain the amplitude of the applied pressure, while the short-circuit current mainly reveals the dynamic information of the applied pressure like loading rate or acceleration. To achieve the goal of Self-Powered tactile imaging, multiple triboelectric active sensor units were integrated into a matrix with a common aluminum electrode at the bottom. The TENG sensors have been further incorporated in a keyboard structure for Self-Powered human-machine interface. The polymer-coated smart keyboard has the function of recognize personal typing patterns to achieve security authentication of personal electronics. This new concept of human-machine interface has numerous potential applications in next-generation smart electronics and wearable devices.
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self powered sensing for chemical and environmental detection
2016Co-Authors: Zhong Lin Wang, J. Chen, Long Lin, Simiao NiuAbstract:In this chapter, we present Self-Powered chemical/environmental sensors, the working principle of which relies on the changeof triboelectric charge density when the pretreated triboelectric surface has been assembled with certain chemical species, usually by immersing it in the aqueous solution of chemicals. Hence, variations of electric output performance (open-circuit voltage and short-circuit current) could be monitored with respect to different concentrations of chemicals. On the basis of this concept, a few original Self-Powered chemical and environmental sensors have been developed to detect the concentration of heavy metal ions, phenol, catechin, and UV intensity. High sensitivity and excellent selectivity has been achieved for each of these chemical/environmental sensors, indicating its potential and promising applications in building fully Self-Powered chemical detection and environmental monitoring systems.
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Triboelectric Nanogenerator for Harvesting Wind Energy and as Self-Powered Wind Vector Sensor System
2016Co-Authors: Ya Yang, Xiaonan Wen, J. Chen, Hulin Zhang, Guang Zhu, Xiandai Zhong, Zong-hong Lin, Peng Bai, Zhong Lin WangAbstract:We report a triboelectric nanogenerator (TENG) that plays dual roles as a sustainable power source by harvesting wind energy and as a Self-Powered wind vector sensor system for wind speed and direction detection. By utilizing the wind-induced resonance vibration of a fluorinated ethylene–propylene film between two aluminum foils, the integrated TENGs with dimensions of 2.5 cm × 2.5 cm × 22 cm deliver an output voltage up to 100 V, an output current of 1.6 μA, and a corresponding output power of 0.16 mW under an external load of 100 MΩ, which can be used to directly light up tens of commercial light-emitting diodes. Furthermore, a Self-Powered wind vector sensor system has been developed based on the rationally designed TENGs, which is capable of detecting the wind direction and speed with a sensitivity of 0.09 μA/(m/s). This work greatly expands the applicability of TENGs as power sources for self-sustained electronics and also Self-Powered sensor systems for ambient wind detection
Xingfu Wang - One of the best experts on this subject based on the ideXlab platform.
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temperature dependence of the pyro phototronic effect in self powered p si n zno nanowires heterojuncted ultraviolet sensors
Nano Today, 2019Co-Authors: Jianqi Dong, Zhong Lin Wang, Xingfu Wang, Zhengjun WangAbstract:Abstract Self-Powered pn-juncted devices fabricated with pyroelectric semiconductor have attached much attention as active ultraviolet (UV) photodetectors (PDs), featuring with energy-efficient, active functionality and ultrafast response speed. Herein, the pyroelectric ZnO nanowires (NWs) grown on p-Si are functioned as a Self-Powered UV PD. Without an external voltage, the fabricated device exhibits a stable and uniform UV sensing ability with high photoresponsivity and fast response and decay time. Furthermore, the effects of ambient temperature on the Self-Powered UV PD are systematically investigated. Under the temperature of 77 K, the current response of the UV PD is significantly improved by over 1304%, while it is only increased by 532.6% at RT. Under the temperatures above RT, the UV PD functions well in a self-powering and stable manner even the temperature is elevated to 85 °C from RT, exhibiting good photoresponsivity of 17.0 mA/W and fast response time of 700 μs at the rise edge. By analyzing energy diagrams of the pn junction, the underlying physical mechanism of the Self-Powered UV PDs is carefully illustrated. This study provides guiding significance for research of high-performances UV sensing and ultrafast optoelectronic communication.
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self powered si cds flexible photodetector with broadband response from 325 to 1550 nm based on pyro phototronic effect an approach for photosensing below bandgap energy
Advanced Materials, 2018Co-Authors: Xingfu Wang, Zhong Lin Wang, Wenbo Peng, Cheng Xu, Changsheng Wu, Kai DongAbstract:: Cadmium sulfide (CdS) has received widespread attention as the building block of optoelectronic devices due to its extraordinary optoelectronic properties, low work function, and excellent thermal and chemical stability. Here, a Self-Powered flexible photodetector (PD) based on p-Si/n-CdS nanowires heterostructure is fabricated. By introducing the pyro-phototronic effect derived from wurtzite structured CdS, the Self-Powered PD shows a broadband response range, even beyond the bandgap limitation, from UV (325 nm) to near infrared (1550 nm) under zero bias with fast response speed. The light-induced pyroelectric potential is utilized to modulate the optoelectronic processes and thus improve the photoresponse performance. Lasers with different wavelengths have different effects on the Self-Powered PDs and corresponding working mechanisms are carefully investigated. Upon 325 nm laser illumination, the rise time and fall time of the Self-Powered PD are 245 and 277 µs, respectively, which are faster than those of most previously reported CdS-based nanostructure PDs. Meanwhile, the photoresponsivity R and specific detectivity D* regarding to the relative peak-to-peak current are both enhanced by 67.8 times, compared with those only based on the photovoltaic effect-induced photocurrent. The Self-Powered flexible PD with fast speed, stable, and broadband response is expected to have extensive applications in various environments.
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enhanced performance of a self powered organic inorganic photodetector by pyro phototronic and piezo phototronic effects
Advanced Materials, 2017Co-Authors: Zhong Lin Wang, Xingfu Wang, Wenbo Peng, Ruomeng Yu, Aurelia Chi Wang, Yongning HeAbstract:Self-Powered photodetectors (PDs) have long been realized by utilizing photovoltaic effect and their performances can be effectively enhanced by introducing the piezo-phototronic effect. Recently, a novel pyro-phototronic effect is invented as an alternative approach for performance enhancement of Self-Powered PDs. Here, a Self-Powered organic/inorganic PD is demonstrated and the influences of externally applied strain on the pyro-phototronic and the photovoltaic effects are thoroughly investigated. Under 325 nm 2.30 mW cm-2 UV illumination and at a -0.45% compressive strain, the PD's photocurrent is dramatically enhanced from ≈14.5 to ≈103 nA by combining the pyro-phototronic and piezo-phototronic effects together, showing a significant improvement of over 600%. Theoretical simulations have been carried out via the finite element method to propose the underlying working mechanism. Moreover, the pyro-phototronic effect can be introduced by applying a -0.45% compressive strain to greatly enhance the PD's response to 442 nm illumination, including photocurrent, rise time, and fall time. This work provides in-depth understandings about the pyro-phototronic and the piezo-phototronic effects on the performances of Self-Powered PD to light sources with different wavelengths and indicates huge potential of these two effects in optoelectronic devices.
Wenbo Peng - One of the best experts on this subject based on the ideXlab platform.
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self powered si cds flexible photodetector with broadband response from 325 to 1550 nm based on pyro phototronic effect an approach for photosensing below bandgap energy
Advanced Materials, 2018Co-Authors: Xingfu Wang, Zhong Lin Wang, Wenbo Peng, Cheng Xu, Changsheng Wu, Kai DongAbstract:: Cadmium sulfide (CdS) has received widespread attention as the building block of optoelectronic devices due to its extraordinary optoelectronic properties, low work function, and excellent thermal and chemical stability. Here, a Self-Powered flexible photodetector (PD) based on p-Si/n-CdS nanowires heterostructure is fabricated. By introducing the pyro-phototronic effect derived from wurtzite structured CdS, the Self-Powered PD shows a broadband response range, even beyond the bandgap limitation, from UV (325 nm) to near infrared (1550 nm) under zero bias with fast response speed. The light-induced pyroelectric potential is utilized to modulate the optoelectronic processes and thus improve the photoresponse performance. Lasers with different wavelengths have different effects on the Self-Powered PDs and corresponding working mechanisms are carefully investigated. Upon 325 nm laser illumination, the rise time and fall time of the Self-Powered PD are 245 and 277 µs, respectively, which are faster than those of most previously reported CdS-based nanostructure PDs. Meanwhile, the photoresponsivity R and specific detectivity D* regarding to the relative peak-to-peak current are both enhanced by 67.8 times, compared with those only based on the photovoltaic effect-induced photocurrent. The Self-Powered flexible PD with fast speed, stable, and broadband response is expected to have extensive applications in various environments.
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enhanced performance of a self powered organic inorganic photodetector by pyro phototronic and piezo phototronic effects
Advanced Materials, 2017Co-Authors: Zhong Lin Wang, Xingfu Wang, Wenbo Peng, Ruomeng Yu, Aurelia Chi Wang, Yongning HeAbstract:Self-Powered photodetectors (PDs) have long been realized by utilizing photovoltaic effect and their performances can be effectively enhanced by introducing the piezo-phototronic effect. Recently, a novel pyro-phototronic effect is invented as an alternative approach for performance enhancement of Self-Powered PDs. Here, a Self-Powered organic/inorganic PD is demonstrated and the influences of externally applied strain on the pyro-phototronic and the photovoltaic effects are thoroughly investigated. Under 325 nm 2.30 mW cm-2 UV illumination and at a -0.45% compressive strain, the PD's photocurrent is dramatically enhanced from ≈14.5 to ≈103 nA by combining the pyro-phototronic and piezo-phototronic effects together, showing a significant improvement of over 600%. Theoretical simulations have been carried out via the finite element method to propose the underlying working mechanism. Moreover, the pyro-phototronic effect can be introduced by applying a -0.45% compressive strain to greatly enhance the PD's response to 442 nm illumination, including photocurrent, rise time, and fall time. This work provides in-depth understandings about the pyro-phototronic and the piezo-phototronic effects on the performances of Self-Powered PD to light sources with different wavelengths and indicates huge potential of these two effects in optoelectronic devices.
