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| 1 | Highly Sensitive Ultrathin Flexible Thermoplastic Polyurethane/Carbon Black Fibrous Film Strain Sensor with Adjustable Scaffold Networks显示文摘In recently years,high-performance wearable strain sensors have attracted great attention in academic and industrial.Herein,a conductive polymer composite of electrospun thermoplastic polyurethane(TPU)fibrous film matrix-embedded carbon black(CB)particles with adjustable scaffold network was fabricated for high-sensitive strain sensor.This work indicated the influence of stereoscopic scaffold network structure built under various rotating speeds of collection device in electrospinning process on the electrical response of TPU/CB strain sensor.This structure makes the sensor exhibit combined characters of high sensitivity under stretching strain(gauge factor of 8962.7 at 155%strain),fast response time(60 ms),outstanding stability and durability(>10,000 cycles)and a widely workable stretching range(0–160%).This high-performance,wearable,flexible strain sensor has a broad vision of application such as intelligent terminals,electrical skins,voice measurement and human motion monitoring.Moreover,a theoretical approach was used to analyze mechanical property and a model based on tunneling theory was modified to describe the relative change of resistance upon the applied strain.Meanwhile,two equations based from this model were first proposed and offered an effective but simple approach to analyze the change of number of conductive paths and distance of adjacent conductive particles. | Xin Wang Xianhu Liu Dirk W.Schubert | 2021 | Nano-Micro Letters2021,13,4: | 19 |
| 2 | Strategies for regeneration of components of nervous system: scaffolds, cells and biomolecules显示文摘Nerve diseases including acute injury such as peripheral nerve injury(PNI),spinal cord injury(SCI)and traumatic brain injury(TBI),and chronic disease like neurodegeneration disease can cause various function disorders of nervous system,such as those relating to memory and voluntary movement.These nerve diseases produce great burden for individual families and the society,for which a lot of efforts have been made.Axonal pathways represent a unidirectional and aligned architecture allowing systematic axonal development within the tissue.Following a traumatic injury,the intricate architecture suffers disruption leading to inhibition of growth and loss of guidance.Due to limited capacity of the body to regenerate axonal pathways,it is desirable to have biomimetic approach that has the capacity to graft a bridge across the lesion while providing optimal mechanical and biochemical cues for tissue regeneration.And for central nervous system injury,one more extra precondition is compulsory:creating a less inhibitory surrounding for axonal growth.Electrospinning is a cost-effective and straightforward technique to fabricate extracellular matrix(ECM)-like nanofibrous structures,with various fibrous forms such as random fibers,aligned fibers,3D fibrous scaffold and core-shell fibers from a variety of polymers.The diversity and versatility of electrospinning technique,together with functionalizing cues such as neurotrophins,ECM-based proteins and conductive polymers,have gained considerable success for the nerve tissue applications.We are convinced that in the future the stem cell therapy with the support of functionalized electrospun nerve scaffolds could be a promising therapy to cure nerve diseases. | Lingling Tian Molamma P.Prabhakaran Seeram Ramakrishna | 2015 | Regenerative Biomaterials2015,2,1: | 17 |
| 3 | Nanosized-bismuth-embedded 1D carbon nanofibers as high-performance anodes for lithium-ion and sodium-ion batteries显示文摘因为它的高容量的能力,在潮湿 / 空气的稳定性,和灵巧的准备,双性人是精力存储材料的一个有希望的候选人。在这研究, nanosized-Bi-embedded 的电气化学的表演一个维(1D ) 碳 nanofibers (Bi/C nanofibers ) 系统地作为为 Li 离子电池(解放) 和 Na 离子电池(嘴) 的阳极被调查。Bi/C nanofibers 用一个单个嘴的 electrospinning 方法被准备,指定双性人来源由 carbothermal 减小列在后面。有约 20 nm 的直径的丰富的双性人 nanoparticles 同类地在 1D 碳 nanofibers 被驱散并且嵌入,由结构、词法的描述证实了。电气化学的大小显示 Bi/C nanofiber 阳极能为嘴为解放和更好的率表演交付长周期生活。Bi/C nanofiber 阳极的优异电气化学的表演被归因于 1D 碳 nanofiber 结构和在碳矩阵嵌入的双性人 nanoparticles 的一致分发。这唯一的嵌入的结构为卷变化引起的机械应力的有效版本提供一个有利电子搬运人和缓冲矩阵并且阻止双性人 nanoparticles 的聚集。 | Hong Yin Qingwei Li Minglei Cao Wei Zhang Han Zhao Chong Li Kaifu Huo Mingqiang Zhu | 2017 | Nano Research2017,10,6: | 12 |
| 4 | 通过溶剂蒸汽处理制备多级静电纺丝纳米纤维作为空气过滤膜实现PM2.5高效捕获(英文)显示文摘空气污染特别是颗粒物(PM)污染,已经威胁到人类的身体健康,因而引起了全世界的高度关注.人们在室外可通过口罩进行个人防护,然而一般的商业口罩起不到好的防护效果.本文利用静电纺丝技术和溶剂蒸汽退火(SVA)方法制备了新型高效的聚(ε-己内酯)/聚环氧乙烷(PCL/PEO)空气过滤纳米纤维.通过SVA处理,纤维表面变得褶皱,增强了对PM2.5的捕获效率.在重度污染状况(PM2.5颗粒浓度>225 mg m^(-3))下,这种纳米褶皱空气过滤膜的移除效率达80.01%.秦皇岛雾霾天实地测量表明,空气过滤膜能高效移除PM2.5.与商业口罩相比,本文经过SVA处理后的PCL/PEO空气过滤膜具有制备方法简单、环境友好且易降解的特性,在高效过滤膜领域有潜在应用. | 黄欣欣 焦体峰 刘青青 张乐欣 周靖欣 李冰冰 彭秋明 | 2019 | Science China Materials2019,62,3: | 12 |
| 5 | Effects of miR-219/miR-338 on microglia and astrocyte behaviors and astrocyte-oligodendrocyte precursor cell interactions显示文摘MiR-219 and miR-338(miR-219/miR-338)are oligodendrocyte-specific microRNAs.The overexpression of these miRs in oligodendrocyte precursor cells promotes their differentiation and maturation into oligodendrocytes,which may enhance axonal remyelination after nerve injuries in the central nervous system(CNS).As such,the delivery of miR-219/miR-338 to the CNS to promote oligodendrocyte precursor cell differentiation,maturation and myelination could be a promising approach for nerve repair.However,nerve injuries in the CNS also involve other cell types,such as microglia and astrocytes.Herein,we investigated the effects of miR-219/miR-338 treatment on microglia and astrocytes in vitro and in vivo.We found that miR-219/miR-338 diminished microglial expression of pro-inflammatory cytokines and suppressed astrocyte activation.In addition,we showed that miR-219/miR-338 enhanced oligodendrocyte precursor cell differentiation and maturation in a scratch assay paradigm that re-created a nerve injury condition in vitro.Collectively,our results suggest miR-219/miR-338 as a promising treatment for axonal remyelination in the CNS following nerve injuries.All experimental procedures were approved by the Institutional Animal Care and Use Committee(IACUC),Nanyang Technological University(approval No.A0309 and A0333)on April 27,2016 and October 8,2016. | Lan Huong Nguyen William Ong Kai Wang Mingfeng Wang Dean Nizetic Sing Yian Chew | 2020 | Neural Regeneration Research2020,15,4: | 11 |
| 6 | Electrospun nanofibers as a wound dressing for treating diabetic foot ulcer显示文摘Diabetes is one of the most prevalent diseases in the world with high-mortality and complex complications including diabetic foot ulcer(DFU). It has been reported that the difficulties in repairing the wound related to DFU has much relationship with the wound infection,change of inflammatory responses, lack of extracellular matrix(ECM), and the failure of angiogenesis. Following the development of medical materials and pharmaceutical technology, nanofibers has been developed by electrospinning with huge porosity, excellent humidity absorption, a better oxygen exchange rate, and some antibacterial activities. That is to say, as a potential material, nanofibers must be a wonderful candidate for the DFU treatment with so many benefits. Careful selection of polymers from natural resource and synthetic resource can widen the nanofibrous application. Popular methods applied for the nanofibrous fabrication consist of uniaxial electrospinning and coaxial electrospinning. Furthermore, nanofibers loading chemical, biochemical active pharmaceutical ingredient(API)or even stem cells can be wonderful dosage forms for the treatment of DFU. This review summarizes the present techniques applied in the fabrication of nanofibrous dressing(ND)that utilizes a variety of materials and active agents to offer a better health care for the patients suffering from DFU. | Yan Liu Shiya Zhou Yanlin Gao Yinglei Zhai | 2019 | Asian Journal of Pharmaceutical Sciences2019,14,2: | 10 |
| 7 | Electrospinning preparation and luminescence properties of Eu(TTA)_3phen/polystyrene composite nanofibers显示文摘Efficient luminescent composite nanofibers,composed of polystyrene(PS,Mw=250000) and europium complex Eu(TTA)3phen(TTA=2-thenoyltrifluoroacetone,phen=1,10-phenanthroline) with diameters ranging from 350 nm to 700 nm,were prepared by electrospinning and characterized by scanning electron microscope(SEM),Fourier transform infrared spectroscopy(FT-IR),fluorescence spectroscopy,and thermogravimetric analysis(TG).The room-temperature fluorescence spectra of the composite nanofibers were composed of the typical Eu3+ ion red emission,assigned to the transitions between the first excited state(5D0) and the multiplet(7F0-4).Owing to the incorporation of the europium complex into the PS fiber matrix and the subsequent distortion of the symmetry around the lanthanide ions by the capping PS,the polarization of the Eu3+ ions was enhanced,which increased the probability for electronic dipole allowed transitions.The monochromaticity(5D0→7F2/5D0→7F1) around the Eu3+ ions was also efficiently improved.Judd-Ofelt intensity parameters(Ω2 and Ω4) were determined from the emission spectra based on the 5D0→7F2 and 5D0→7F4 electronic transitions,respectively.The results showed that the Ω2 values of the composite nanofibers were apparently higher than that of the pure complex,indicating an increased covalency degree in the europium first coordination shell due to the modification of PS matrix.The modification of the polymer matrix also resulted in much higher thermal stability of the composite fibers than that of the pure complex. | 张小萍 温世鹏 胡水 张立群 刘力 | 2010 | Journal of Rare Earths2010,28,3: | 9 |
| 8 | Electrospinning of ceramic nanofibers:Fabrication,assembly and applications显示文摘This paper provides a brief review of current research activities that focus on the synthesis and controlled assembly of inorganic nano-bers by electrospinning,their electrical,optical and magnetic properties,as well as their applications in various areas including sensors,catalysts,batteries,filters and separators.We begin with a brief introduction to electrospinning technology and a brief method to produce ceramic nanofibers from electrospinning.We then discuss approaches to the controlled assembly and patterning of electrospun ceramic nanofibers.We continue with a highlight of some recent applications enabled by electrospun ceramic nano-bers,with a focus on the physical properties of functional ceramic nanofibers as well as their applications in energy and environmental technologies.In the end,we conclude this review with some perspectives on the future directions and implications for this new class of functional nanomaterials.It is expected that this review paper can help the readers quickly become acquainted with the basic principles and particularly the experimental procedure for preparing and assembly of 1D ceramic nanofiber and its arrays. | Hui WU Wei PAN Dandan LIN Heping LI | 2012 | Journal of Advanced Ceramics2012,1,1: | 9 |
| 9 | In-situ fabricated anisotropic halide perovskite nanocrystals in polyvinylalcohol nanofibers: Shape tuning and polarized emission显示文摘We report an in-situ fabrication of halide perovskite (CH3NH3PbX3,CH3NH3 =methylammonium,MA,X =Cl,Br,I) nanocrystals in polyvinylalcohol (PVA) nanofibers (MAPbX3@PVA nanofibers) through electrospinning a perovskite precursor solution.With the content of the precursors increased,the resulting MAPbBr3 nanocrystals in PVA matrix changed the shape from ellipsoidal to pearl-like,and finely into rods-like.Optimized MAPbBr3@PVA nanofibers show strong polarized emission with the photoluminescence quantum yield of up to 72%.We reveal correlations between the shape of in-situ fabricated perovskite nanocrystals and the polarization degree of their emission by comparing experimental data from the single nanofiber measurements with theoretical calculations.Polarized emission of MAPbBr3@PVA nanofibers can be attributed to the dielectric confinement and quantum confinement effects.Moreover,nanofibers can be efficiently aligned by using parallel positioned conductor strips with an air gap as collector.A polarization ratio of 0.42 was achieved for the films of well-aligned MAPbBr3@PVA nanofibers with a macroscale size of 0.5 cm × 2 cm,which allows potential applications in displays,lasers,waveguides,etc. | Linghai Meng Changgang Yang Jingjia Meng Yongzhi Wang Yong Ge Ziqiang Shao Guofeng Zhang Andrey L.Rogach Haizheng Zhong | 2019 | Nano Research2019,12,6: | 9 |
| 10 | A flexible and superhydrophobic upconversionluminescence membrane as an ultrasensitive fluorescence sensor for single droplet detection显示文摘A Ln^(3+)-doped(Yb^(3+),Tm^(3+)or Yb^(3+),Er^(3+)co-doped)NaYF4 nanoparticle/polystyrene hybrid fibrous membrane(HFM)was fabricated using an electrospinning technique.The HFM shows upconversion luminescence(UCL),flexibility,superhydrophobicity and processability.The UCL membrane can be used as a fluorescence sensor to detect bioinformation from a single water droplet(~10μl).Based on the fluorescence resonance energy transfer,the detection limits of this sensor can reach 1 and 10 ppb for the biomolecule,avidin,and the dye molecule,Rhodamine B,respectively,which are superior to most of the fluorescence sensors reported in previous works.After the fluorescence detection,the target droplet was easily removed without residues on the UCL membrane surface due to its superhydrophobic property,which exhibits an excellent recyclability that cannot be achieved by traditional liquid-based detection systems. | Kui-Chao Liu Zhen-Yi Zhang Chong-Xin Shan Zhi-Qing Feng Jia-Su Li Chun-Lei Song Ya-Nan Bao Xiao-Hui Qi Bin Dong | 2016 | Light(Science & Applications)2016,5,1: | 8 |
| 11 | Resorbable polymer electrospun nanofibers:History,shapes and application for tissue engineering显示文摘Resorbable polymer electrospun nanofiber-based materials/devices have high surface-to-volume ratio and often have a porous structure with excellent pore interconnectivity,which are suitable for growth and development of different types of cells.Due to the huge advantages of both resorbable polymers and electrospun nano fibers,re sorbable polymer electrospun nanofibers(RPENs)have been widely applied in the field of tissue engineering.In this paper,we will mainly introduce RPENs for tissue engineering.Firstly,the electrospinning technique and electrospun nanofiber architectures are briefly introduced.Secondly,the application of RPENs in the field of tissue engineering is mainly reviewed.Finally,the advantages and disadvantages of RPENs for tissue engineering are discussed.This review will provide a comprehensive guide to apply resorbable polymer electrospun nanofibers for tissue engineering. | Tingting Wu Mengzhen Ding Cuiping Shi Yiqun Qiao Panpan Wang Ruirui Qiao Xichang Wang Jian Zhong | 2020 | Chinese Chemical Letters2020,31,3: | 8 |
| 12 | Bio-based and Biodegradable Electrospun Fibers Composed of Poly(L-lactide) and Polyamide 4显示文摘Novel bio-based and biodegradable block copolymers were synthesized by 'click' reaction between poly(L-lactide)(PLLA) and polyamide 4(PA4). Upon tuning the molar mass of PLLA block, the properties of copolymers and electrospun ultrafine fibers were investigated and compared with those of PLLA and PA4 blends. PLLA and PA4 were found incompatible and formed individual crystalline regions, along with reciprocal inhibition in crystallization. Electrospun fibers were highly hydrophobic, even if hydrophilic PA4 was the rich component. The crystallinity of either PLLA or PA4 decreased after electrospinning and PLLA-rich as-spun fibers were almost amorphous. Immersion tests proved that fibers of block copolymers were relatively homogeneous with micro-phase separation between PLLA and PA4. The fibrous structures of copolymers were different from those of the fibers electrospun from blends, for which sheath-core structure induced by macro-phase separation between homopolymers of PLLA and PA4 was confirmed by TEM, EDS, and XPS. | Tao Chen Guo-Cheng Zhong Yuan-Ting Zhang Li-Ming Zhao Yong-Jun Qiu | 2020 | Chinese Journal of Polymer Science2020,38,1: | 8 |
| 13 | Three-dimensional Porous Networks of Ultra-long Electrospun SnO_2 Nanotubes with High Photocatalytic Performance显示文摘Recent progress in nanoscience and nanotechnology creates new opportunities in the design of novel SnO2 nanomaterials for photocatalysis and photoelectrochemical. Herein, we firstly highlight a facile method to prepare threedimensional porous networks of ultra-long SnO2 nanotubes through the single capillary electrospinning technique.Compared with the traditional SnO2 nanofibers, the as-obtained three-dimensional porous networks show enhancement of photocurrent and photocatalytic activity, which could be ascribed to its improved light-harvesting efficiency and high separation efficiency of photogenerated electron–hole pairs. Besides, the synthesis route delivered three-dimensional sheets on the basis of interwoven nanofibrous networks, which can be readily recycled for the desirable circular application of a potent photocatalyst system. | Peng Zhang Lijie Wang Xi Zhang Junhua Hu Guosheng Shao | 2015 | Nano-Micro Letters2015,7,1: | 8 |
| 14 | Functional Electrospun Fibers for Local Therapy of Cancer显示文摘Despite great efforts and advancement in the treatment of cancer,tumor recurrence and metastasis remain significant challenges and demand novel therapy strategies.Recently,advances in biomaterials and drug delivery systems have facilitated the development of the local therapy of cancer,among which electrospun nanofibrous scaffolds show great promise owing to their porous structure,relatively large surface area,high drug loading capacity,similarity with the native extracellular matrix,and possibility of the combination of various therapies.Here,we review this rapidly developing field of electrospun nanofibrous scaffolds as a drug delivery system for cancer local therapy,in particular addressing stimuli-responsive drug release,as well as its combination with stem cell and immune therapy.Challenges and future perspectives are also discussed. | Jingwen Zhao Wenguo Cui | 2020 | Advanced Fiber Materials2020,2,5: | 7 |
| 15 | Electrospinning of ultrafine core/shell fibers for biomedical applications显示文摘Because of the inherent appearance similar to the natural extracellular matrix,ultrafine fibrous membranes prepared via electrospinning exhibit widespread applications,especially in the biomedical area.Extensional modifications of coaxial and emulsion electrospinning have drawn much attention in preparation of core/shell fibers for applications as tissue engineering scaffolds and controlled delivery systems for bioactive substances.Due to incorporation of multi-components in the electrospun core/ shell fibers,the process of coaxial and emulsion electrospinning became more susceptible.The theories have not been fully understood.A series of investigations were carried out evaluating the systematic and processing parameters.This paper reviews advantages and potentials of electrospun core/shell fibers as well as factors influencing their formation on the basis of our research and new progress. | ZHANG Hong,ZHAO ChenGuang,ZHAO YunHui,TANG GongWen & YUAN XiaoYan School of Materials Science and Engineering,and Tianjin Key Laboratory of Composite and Functional Materials,Tianjin University,Tianjin 300072,China | 2010 | Science China Chemistry2010,53,6: | 7 |
| 16 | Flexible, Porous, and Metal–Heteroatom?Doped Carbon Nanofibers as Efficient ORR Electrocatalysts for Zn–Air Battery显示文摘Developing an e cient and durable oxygen reduction electrocatalyst is critical for clean-energy technology, such as fuel cells and metal–air batteries. In this study, we developed a facile strategy for the preparation of flexible, porous, and well-dispersed metal–heteroatom-doped carbon nanofibers by direct carbonization of electrospun Zn/Co-ZIFs/PAN nanofibers(Zn/Co-ZIFs/PAN). The obtained Zn/Co and N co-doped porous carbon nanofibers carbonized at 800 °C(Zn/Co–N@PCNFs-800) presented a good flexibility, a continuous porous structure, and a superior oxygen reduction reaction(ORR) catalytic activity to that of commercial 20 wt% Pt/C, in terms of its onset potential(0.98 V vs. RHE), half-wave potential(0.89 V vs. RHE), and limiting current density(-5.26 mA cm^(-2)). In addition, we tested the suitability and durability of Zn/Co–N@PCNFs-800 as the oxygen cathode for a rechargeable Zn–air battery. The prepared Zn–air batteries exhibited a higher power density(83.5 mW cm^(-2)), a higher specific capacity(640.3 mAh g^(-1)), an excellent reversibility, and a better cycling life than the commercial 20 wt% Pt/C + RuO_2 catalysts. This design strategy of flexible porous non-precious metal-doped ORR electrocatalysts obtained from electrospun ZIFs/polymer nanofibers could be extended to fabricate other novel, stable, and easy-to-use multi-functional electrocatalysts for clean-energy technology. | Qijian Niu Binling Chen Junxia Guo Jun Nie Xindong Guo Guiping Ma | 2019 | Nano-Micro Letters2019,11,1: | 7 |
| 17 | 简单合成连续介孔结构的T-Nb_2O_5纳米纤维用作锂离子电池负极(英文)显示文摘五氧化二铌Nb_2O_5由于其良好的倍率性能和安全性,作为锂离子电池负极材料被广泛研究.但是其固有的低电子电导率在很大程度上限制了其电化学性能的发挥.在本论文中,我们通过静电纺丝和后续空气热处理构建了具有连续介孔结构的T-Nb_2O_5纳米纤维.介孔结构彼此互连,确保高表面积的同时也促进了电解液的渗透.当用作锂离子电池负极时在电压窗口为0.01–3.0 V,电流密度为1 A g^(-1)的条件下,循环1000圈后可逆比容量达到238 mA h g^(-1).即使提高电压窗口到1.0–3.0 V,在循环200圈后仍然有166 mA h g^(-1)的可逆比容量.此外,电极材料还表现出优异的倍率性能.多孔纳米纤维结构和T-Nb_2O_5独特晶体结构的协同效应,增大了电极和电解质的接触面积,改善了电子传导性,从而使电化学性能得到提高. | 楼林震 孔祥忠 朱挺 林建德 梁叔全 刘菲 曹国忠 潘安强 | 2019 | Science China Materials2019,62,4: | 6 |
| 18 | Core-shell fibrous vascular grafts with the nitric oxide releasing property显示文摘Small-diameter vascular grafts with the nitric oxide(NO) releasing property were designed and prepared.Diazeniumdiolated N,N'-dibutyl-1,6-hexanediamine(DBHD/N2O2) was first synthesized as the NO donor and doped into the biocompatible polymer poly(ε-caprolactone)(PCL).The fibrous vascular grafts were fabricated by electrospinning.Despite the reduced platelet adhesion observed on the NO releasing grafts,the cytotoxicity and burst release were apparent,especially at a higher loading level of the NO donor.In order to solve this problem,core-shell structured nanofibers,in which PCL or gelatin is the shell and PCL doped with the NO donor is the core,were fabricated via coaxial electrospinning.The core-shell structure made the NO release more steady and controllable,and the cell compatibility was improved. | ZHANG Lei,WANG Kai,ZHAO Qiang,ZHENG WenTing,WANG ZhiHong,WANG ShuFang & KONG DeLing Key Laboratory of Bioactive Materials,Ministry of Education College of Life Science,Nankai University,Tianjin 300071,China | 2010 | Science China Chemistry2010,53,3: | 6 |
| 19 | Fabrication and characterization of electrospun TiO_2/CuS micro-nano-scaled composite fibers | Delong Li,Chunxu Pan School of Physics and Technology,Center for Electron Microscopy and MOE Key Laboratory of Artificial Micro-and Nano-structures,Wuhan University,Wuhan 430072,China | 2012 | Progress in Natural Science:Materials International2012,22,1: | 6 |
| 20 | S-scheme photocatalyst Bi2O3/TiO2 nanofiber with improved photocatalytic performance显示文摘In this study,a hierarchical Bi2O3/TiO2 fibrous composite was in-situ fabricated on an electrospun TiO2 nanofiber at ambient temperature.In the Bi2O3/TiO2 composite,S-scheme electron migration occurred between Bi2O3 and TiO2.In the photocatalytic degradation of phenol under simulated sunlight,the asprepared Bi2O3/TiO2 nanofibers considerably outperformed Bi2O3 nanoparticles and TiO2 nanofibers.This improvement is contributed by maintaining and effectively utilizing the useful carriers and consuming the useless holes and electrons,realized by the S-scheme heterojunction and hierarchical structure.This study also provides an alternative design fashion for photocatalysts. | Rongan He Haijuan Liu Huimin Liu Difa Xu Liuyang Zhang | 2020 | Journal of Materials Science & Technology2020,52,17: | 6 |