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Recent Progress of Functional Fiber and Textile Triboelectric Nanogenerators:Towards Electricity Power Generation and Intelligent Sensing

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Advanced Fiber Materials 2021年第6期3卷 394-412页

作者： Wei wang Aifang Yu Junyi Zhai zhong Lin wang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 100083China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Center On Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332-0245USA

Rapid development in wearable electronics has brought huge convenience to human life and gradually penetrated into various indispensable felds,such as health monitoring,medical assistance,smart sports,object tracking and smart home,***,the suitable energy supply system for these wearable electronics remains an important issue to *** and textile triboelectric nanogenerators(f/t-TENGs),capable of converting biomechanical energy into electricity,have promising features to act as a mobile sustainable power source for wearable electronics or directly serve as an intelligent self-powered sensing *** with the low-output piezoelectric nanogenerators,hard-to-wear electromagnetic generators and other bulk TENGs,the fber/textile TENG may be the best type of wearable human mechanical energy harvester at ***,this review comprehensively introduces the recent progress of smart fbers and textiles with a highlight on triboelectric nanogenerators,including the general materials and structures of fber/textile shaped electronics,various fber and textile devices for triboelectric/triboelectric-integrated energy harvesting and self-powered smart sensing ***,the advance of f/t-TENGs with multifunctionality and large-scale textile processing techniques is summarized as ***,the challenges and perspectives of f/t-TENGs for future improvement,large-scale production and emerging applications are thoroughly discussed as well.

关键词： Smart fber and textile Triboelectric nanogenerators Energy harvesting Intelligent sensing Wearable electronics

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Output of an Ultrasonic Wave-Driven Nanogenerator in a Confi ned Tube

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Nano Research 2009年第3期2卷 177-182页

作者： Xudong wang Yifan Gao Yaguang Wei zhong Lin wang School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGeorgia 30332-0245USA Department of Materials Science and Engineering University of Wisconsin at MadisonMadisonWisconsin 53706USA

The output of an ultrasonic wave-driven nanogenerator(NG)has been found to depend on the excitation conditions and *** angle tests indicate that the effective area of an NG determines the amount of power that can be *** output power of an NG is also directly related to its distance from the ultrasonic source.A sinusoidal profile of the electrical output was observed when an NG was moved inside a long tube filled with water with the ultrasonic source located at one *** is due to the oscillation of the wave intensity inside the tube as a function of the distance from the excitation source.

关键词： Nanogenerator ultrasonic wave ZnO nanowire

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Surface Plasmon Resonance and Raman Scattering Activity of the Au/AgxO/Ag Multilayer Film

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Chinese Physics Letters 2014年第4期31卷 147-149页

作者： zhong Yu-Ting CHENG Zi-Qiang MA Liang wang Jia-Hong HAO zhong-Hua wang Qu-Quan Key Laboratory of Artificial Micro- and Nano-structures of the Ministry of Education and School of Physics and Technology Wuhan University Wuhan 430072

The nanostructured Au/AgxO/Ag sandwich multilayer films on quartz substrates are prepared by the magnetron sputtering method. The morphology, plasmon resonance and surface enhanced Raman scattering （SERS） activi- ties of the multilayer films are studied. The resonant absorption wavelength of localized surface plasmon is tuned in a wide range from 618nm to 993nm by controlling the density of nanoparticles of Au and Ag. The SERS activity of the Au/AgxO/Ag multilayer films are enhanced over -10 times compared with those of bare Ag and bare Au films. These properties may find a potential application in biosensor and bioimaging.

关键词： SURFACE plasmon resonance RAMAN scattering SERS spectroscopy BIO-imaging sensors MAGNETRON sputtering

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Understanding Contact Electrification at Water/Polymer Interface

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Research 2022年第2期2022卷 323-332页

作者： Yang Nan Jiajia Shao Morten Willatzen zhong Lin wang Bijing Institute of Nanocenergy and Nantosystems Chinese Academny of SciencesBeijing 101400China School of Nanosience and Techmology University of Chinese Academy of SciencesBeiing 100049China CUSTech Instiute WenzhouZhejiang 325024China School of Materials Science and Enginering Georgia Institute of TcnologrAtlantaGreorgia 30332-0245USA

Contact electrifcation(CE)involves a complex interplay of physical interactions in realistic material *** this reason,scientific consensus on the qualitative and quantitative importance of different physical mechanisms on CE remains a formidable *** CE mechanism at a water/polymer interface is a crucial challenge owing to the poor understanding of charge transfer at the atomic ***-principle density functional theory(DFT),used in the present work,proposes a new paradigm to address CE Our results indicate that CE fllows the same trend as the gap between the highest occupied and lowest unoccupied molecular orbitals(HOMO and LUMO)of *** transfer occurs at the outmost atomic layer of the water/polymer interface and is closely linked to the functional groups and atom *** the polymer chains are parallel to the water layer,most electrons are transferred;conversely,if they are perpendicular to each other,the transfer of charges can be *** demonstrate that a decrease in the inerface distance between water and the polymer chains leads to CE in quantitative agreement with the electron cloud overlap model.W'e finally use DFT calculations to predict the properies of CE materials and their potential for triboeletric nanogenerator energy harvesting devices.

关键词： occupied chains polymer

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Modeling and optimization of a spherical triboelectric generator

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Nano Research 2023年第9期16卷 11925-11931页

作者： Jens Gravesen Morten Willatzen Jiajia Shao zhong Lin wang DTU Compute Technical University of DenmarkKgs.LyngbyDK-2800Denmark Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China Georgia Institute of Technology AtlantaGeorgia 30332USA

A detailed geometric analysis of spherical triboelectric nanogenerators is *** comparison with earlier works on spherical triboelectric generators,the general case where the moving dielectric rolls on the inside surface of the larger sphere of the TENG is discussed in terms of maximum energy *** optimization analysis of geometrical parameters allows various cases of electrode geometry,either in the form of a spherical circle,spherical ellipse,spherical rectangle,or spherical isosceles trapezium,to be *** analytical insight and computational effective models provided by differential geometry make the mathematical model superior compared to standard three-dimensional(3D)numerical methods.

关键词： spherical triboelectric nanogenerator differential geometry analysis electrode shape study modeling and optimization

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Water–solid contact electrification and catalysis adjusted by surface functional groups

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Nano Research 2024年第4期17卷 3344-3351页

作者： Yusen Su Andy Berbille zhong Lin wang Wei Tang CAS Center for Excellence in Nanoscience Beijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing100083China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing100049China Georgia Institute of Technology AtlantaGA 30332-0245USA

Chemical functional groups on solid surfaces greatly influence contact electrification(CE)at water–solid *** studies of their effects mainly swapped materials or bonded related molecules to a substrate,introducing other factors of *** work aims at unambiguously demonstrating the role of functional groups in water-polymer *** study the contribution of functional groups,by using ion coupled plasma etching to modify a high-density polyethylene(HDPE)film,a polymer with a naturally quasi-null charge transfer ***(HDPE–F)and hydroxyl(HDPE–OH)functional groups are generated and endowed HDPE with charge withdrawing ***–F withdraws 2.5–2.7 times more charges than HDPE–***,the surface charges accumulated generate electrostatic forces,altering the droplets *** phenomenon provides another approach to study CE,helping to evaluate the contribution of electrons to solid–liquid ***,employing HDPE–F to perform contact-electro-catalysis shows its activity is 2.4 times higher than that of commercial fluorinated films.

关键词： contact-electro-catalysis charge transfer solid–liquid interfaces contact electrification

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Triboelectric nanogenerators as flexible power sources

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npj Flexible Electronics 2017年第1期1卷 60-69页

作者： Yang wang Ya Yang zhong Lin wang Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 100083China CAS Center for Excellence in Nanoscience National Center for Nanoscience and TechnologyBeijing 100083China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332-0245USA

The triboelectric nanogenerator(TENG)as a new power-generation technology was reported by wang and co-workers in *** of its great potential for scavenging mechanical energy from living environment and sustainably driving portable devices,many researchers have developed various methods to improve output performances of *** this paper,we review the progress in TENG made as flexible power sources by integrating flexible materials and stretching structures,especially for the applications of flexible *** optimizing performances of TENG,the structural designs,material selections,and hybrid energy cells are *** reported TENG as flexible power sources has the potential applications in lighting up light emitting diodes(LEDs),powering sensors,and monitoring biomechanical motions.

关键词： power sources stretching

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Mixed Spectral and Pseudospectral Methods for a Nonlinear Strongly Damped Wave Equation in an Exterior Domain

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Numerical Mathematics(Theory,Methods and Applications) 2011年第2期4卷 255-282页

作者： zhong-Qing wang Rong Zhang Department of Mathematics Shanghai Normal UniversityShanghai200234P.R.China Scientific Computing Key Laboratory of Shanghai Universities Division of Computational Science of E-institute of Shanghai Universities

The aim of this paper is to develop the mixed spectral and pseudospectral methods for nonlinear problems outside a disc,using Fourier and generalized Laguerre *** an example,we consider a nonlinear strongly damped wave *** mixed spectral and pseudospectral schemes are *** convergence is *** results demonstrate the efficiency of this approach.

关键词： Mixed spectral and pseudospectral methods exterior problems strongly damped wave equation

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Two New Lanostane-type Triterpenoids from Mulgedium tataricum

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Chinese Chemical Letters 2006年第2期17卷 204-206页

作者： Xiao Xiong wang zhong Jian JIA College of Chemistry and Chemical Engineering National Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000

Two new triterpenoids, lanost-9（11）, 23Z（24）-dicnc-3β, 25-diol （1） and lanost-9（11）, 25- diene-3β, 24-diol （2） were isolated from Mulgedium tataricum L. Their structures wcrc elucidated by spectral methods.

关键词： Mulgedium tataricum Compositae lanostane-type triterpenoid.

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Mechanical Property Stability of Cu-Mo-Ni Alloyed Austempered Ductile Iron

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Journal of Iron and Steel Research International 2005年第5期12卷 34-38页

作者： LIU Sheng-fa wang zhong-fan Wuhan University of Technology Wuhan 430070 China

The aim of present work is to investigate the influencing factors on mechanical property stability of Cu-Mo-Ni alloyed austempered ductile iron （ADI）. The results show that after austenitized at 900℃ for 2 h followed by austempered at 370℃for another 2 h, the mechanical property of the alloyed ADI can reach the Germanite GGG-100 standard, i.e. σb≮1000 MPa,δ≮5%, at 95% confidence level. And the satisfactory mechanical properties were obtained when the alloyed ADI was austenitized at 850℃ to 1 000 ℃ for 1-4 h, and austempered at 355℃ to 400℃ for another 1 h to 4 h. The microstructures, including nodule number, white bright zone content （martensite-containing interdendritic segregation zone） and retained austenite content, can significantly influence the mechanical properties of the ADI. In order to obtain the good combinations of strength and ductility, the volume fraction of white bright zone should he less than 5%, and the retained austenite contents maintain hetween 30 % and 40%. The application of inoculation techniques to increase graphite nodule number can effectively reduce the white bright zone content in the structure.

关键词： Cu-Mo-Ni alloyed austempered ductile iron mechanical property stability

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