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Perovskite-based co.or camera inspired by human visual cells

Light(Science & Applications) 2023年第2期12卷 294-303页

作者： Yujin Lu Zhong Ji Guobiao Cen Hengchao Sun Haibao Wang Chuanxi Zhao Zhong Lin Wang Wenjie Mai Siyuan Laboratory Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy MaterialsGuangdong Provincial Key Laboratory of Optical Fiber Sensing and CommunicationsGuangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy MaterialsDepartment of PhysicsJinan UniversityGuangzhouGuangdong 510632China Guangzhou Institute of Technology Xidian UniversityGuangzhouGuangdong 510555China Bejing Smart-Chip microelectronics Technology co. Ltd.Bejing 100192China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBejing 100083China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

There are two primary types of photoreceptor cells in the human eye:co.e cells and rod cells that enable co.or vision and night vision,***,inspired by the function of human visual cells,we develop a high-resolution perovskite-based co.or camera using a set of narrowband red,green,blue,and broadband white perovskite photodetectors as imaging *** narrowband red,green,and blue perovskite photodetectors with co.or perceptions mimic long-,medium-,and short-wavelength co.es cells to achieve co.or imaging ***,the broadband white perovskite photodetector with better detectivity mimics rod cells to improve weak-light imaging *** perovskite-based camera,co.bined with predesigned pattern illumination and image reco.struction technology,is demonstrated with high-resolution co.or images(up to 256 x 256 pixels)in diffuse *** is far beyond previously reported advanced perovskite array image sensors that only work in monochrome transmission *** work shows a new approach to bio-inspired cameras and their great potential to strongly mimic the ability of the natural eve.

关键词： visual perovskite image

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High-Throughput Prediction and Design of Novel co.opeptides for Biomedical Research and Development

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BioDesign Research 2022年第1期2022卷 38-51页

作者： Bingmiao Gao Yu Huang Chao Peng Bo Lin Yanling Liao Chao Bian Jiaan Yang Qiong Shi Key Laboratory of Tropical Translational Medicine of Ministry of Education School of PharmacyHainan Medical UniversityHaikouHainan 570102China Shenzhen Key Lab of Marine Genomics Guangdong Provincial Key Lab of Molecular Breeding in Marine Economic AnimalsBGI Academy of Marine SciencesBGI MarineShenzhenGuangdong 518081China BGI-Marine Research Institute for Biomedical Technology Shenzhen Huahong Marine Biomedicine Co.Ltd.ShenzhenGuangdong 518119China Hainan Provincial Key Laboratory of Carcinogenesis and Intervention Hainan Medical UniversityHaikouHainan 570102China Research and Development Department Micro Pharmtech Ltd.WuhanHubei 430075China

co.e snail venoms have been co.sidered a valuable treasure for international scientists and businessmen, mainly due to theirpharmaco.ogical applications in development of marine drugs for treatment of various human diseases. To date, around 800co.us species are reco.ded, and each of them produces over 1,000 venom peptides (termed as co.opeptides or co.otoxins).This reflects the high diversity and co.plexity of co.e snails, although most of their venoms are still *** multiomics (such as genomics, transcriptomics, and proteomics) approaches have been recently developed to minediverse co.us venom samples, with the main aim to predict and identify potentially interesting co.opeptides in an efficientway. Some bioinformatics techniques have been applied to predict and design novel co.opeptide sequences, related targets, andtheir binding modes. This review provides an overview of current knowledge on the high diversity of co.opeptides andmultiomics advances in high-throughput prediction of novel co.opeptide sequences, as well as molecular modeling and designof potential drugs based on the predicted or validated interactions between these toxins and their molecular targets.

关键词： drugs co. prediction

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microstructure and Wear Resistance of Laser Cladded co.based Superalloy co.ting

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稀有金属材料与工程 2012年第S1期41卷 97-99页

作者： Ma Wenyou Lu Cheng Liu Min Chen Xingchi Tong Xin Lu Cheng Li Fuhai Guangzhou Res Inst Nonferrous Met Guangzhou 510650 Guangdong Peoples R China

co.based superalloy co.ting was prepared on the stainless steel surface by laser *** microstructure,phase co.stitutes and worn surface morphology of the co.ting were characterized by optical microsco.e,scanning electron microsco.e(SEM)with energy dispersive spectrum(EDS)and X-ray diffraction(XRD).The ambient temperature sliding friction and wear property of the co.ting was also *** experiments results showed that:the microstructures of the co.based superalloy co.ting are"cellular crystal-co.rse dendrite-tiny dendrite"in turn from bottom to surface,which co.sists ofγ-co.solid solution,Fe2Mo and *** average micro-hardness of the laser cladding is 632 HV,which is 2 times higher than that of 304 stainless steel *** ambient temperature sliding friction and wear property of the laser cladding is about 1～1.5 times in co.trast to that of 304 stainless steel *** better wear resistance of the co.ting is co.tributed to solution strengthening of Mo,as well as dispersion strengthening of Fe2Mo and co.Mo6 hard *** failure mechanisms of the co.ting are pitting fatigue abrasion and grain-abrasion.

关键词： laser cladding co.based superalloy wear resistance grain-abrasion

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Very-High co.or Rendering Index Hybrid White Organic Light-Emitting Diodes with Double Emitting Nanolayers

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Nano-micro Letters 2014年第4期6卷 335-339页

作者： Baiquan Liu Miao Xu Lei Wang Hong Tao Yueju Su Dongyu Gao Linfeng Lan Jianhua Zou Junbiao Peng Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology New Vision Opto-Electronic Technology co. Ltd

A very-high co.or rendering index white organic light-emitting diode(WOLED) based on a simple structure was successfully fabricated. The optimized device exhibits a maximum total efficiency of 13.1 and 5.4 lm/W at 1,000 cd/m2. A peak co.or rendering index of 90 and a relatively stable co.or during a wide range of luminance were obtained. In addition, it was demonstrated that the 4,40,400-tri(9-carbazoyl) triphenylamine host influenced strongly the performance of this *** results may be beneficial to the design of both material and device architecture for high-performance WOLED.

关键词： White light Hybrid co.or rendering index Organic light-emitting diodes Double emitting nanolayers

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Maximizing hydrogen evolution via co.Ni dual atoms and nanoclusters on hierarchically ordered porous carbon framework

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Science China Materials 2024年第10期67卷 3197-3205页

作者： Qian Li Pan Zhang Huaiguang Li Yuan Wang Dongsheng Tang Qun Li Jiabin Wu Synergetic Innovation Center for Quantum Effects and Application Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of EducationCollege of Physics and Information ScienceHunan Normal UniversityChangsha 410081China National Key Laboratory of Advanced micro and Nano Manufacture Technology School of Integrated CircuitsPeking UniversityBeijing 100871China The Chinese University of Hong Kong ShenzhenShenzhen 518172China CAS Key Laboratory of Nanosystem and Hierarchical Fabrication&CAS Center for Excellence in Nanoscience National Center for Nanoscience and TechnologyBeijing 100190China Department of Chemistry Tsinghua UniversityBeijing 100084China Insititute of microelectronics State Key Laboratory of Analog and Mixed-Signal VLSIUniversity of MacaoMacao 519000China

Efficient hydrogen production through water splitting relies on the development of high-performance catalysts for the hydrogen evolution reaction(HER).In this study,we synthesized the co.i SAs@NPs-NC catalyst using multi-metal single-crystal ordered macroporous metal-organic frameworks(MOFs)as *** catalyst features a hierarchical porous structure with ordered macropores and micropores,which not only provides a high specific surface area but also promotes efficient mass ***,the inco.poration of bimetallic co.ponents,co.pled with synergistic interactions between single atoms(SAs)and nanoparticles(NPs),significantly enhances its catalytic *** co.i SAs@NPs-NC nanocatalysts demonstrated exceptional activity in the HER,reco.ding overpotentials of 90 mV in 1 M KOH and 61 mV in 0.5 M H_(2)SO_(4),both at a current density of 10 mA cm^(−2).In addition,density functional theory(DFT)analysis was employed to investigate the synergistic interactions among co.i NPs,SAs,and nitrogen *** finding highlights the promising potential of the co.i SAs@NPs-NC catalyst for efficient hydrogen evolution,making it a valuable candidate for advancing the field of water splitting.

关键词： three dimensional ordered macroporous co.Ni dual atoms co.Ni nanoclusters HER synergistic effect

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Flexible Large-Area Graphene Films of 50-600 nm Thickness with High Carrier Mobility

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Nano-micro Letters 2023年第9期15卷 1-14页

作者： Shiyu Luo Li Peng Yangsu Xie Xiaoxue Cao Xiao Wang Xiaoting Liu Tingting Chen Zhanpo Han Peidong Fan Haiyan Sun Ying Shen Fan Guo Yuxing Xia Kaiwen Li Xin Ming Chao Gao MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China School of micro-Nanoelectronics Zhejiang UniversityZJU-Hangzhou Global Scientific and Technological Innovation CenterHangzhou 311200People’s Republic of China co.lege of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518055GuangdongPeople’s Republic of China Shenzhen Key Laboratory of Nanobiomechanics Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Hangzhou Gaoxi Technol co.Ltd Hangzhou 311113People’s Republic of China

Bulk graphene nanofilms feature fast electronic and phonon transport in co.bination with strong light-matter interaction and thus have great potential for versatile applications,spanning from photonic,electronic,and optoelectronic devices to charge-stripping and electromagnetic shielding,***,large-area flexible close-stacked graphene nanofilms with a wide thickness range have yet to be ***,we report a polyacrylonitrile-assisted’substrate replacement’strategy to fabricate large-area free-standing graphene oxide/polyacrylonitrile nanofilms(lateral size~20 cm).Linear polyacrylonitrile chains-derived nanochannels promote the escape of gases and enable macro-assembled graphene nanofilms(nMAGs)of 50-600 nm thickness following heat treatment at 3,000℃.The uniform nMAGs exhibit 802-1,540 cm^(2)V-1s-1carrier mobility,4.3-4.7 ps carrier lifetime,and>1,581 W m^(-1)K^(-1)thermal co.ductivity(n MAG-assembled 10μm-thick films,mMAGs).nMAGs are highly flexible and show no structure damage even after 1.0×10^(5)cycles of ***,n MAGs broaden the detection region of graphene/silico. heterojunction from near-infrared to mid-infrared and demonstrate higher absolute electromagnetic interference(EMI)shielding effectiveness than state-of-the-art EMI materials of the same *** results are expected to lead to the broad applications of such bulk nanofilms,especially as micro/nanoelectronic and optoelectronic platforms.

关键词： Flexible large-area graphene nanofilm High carrier mobility Mid-infrared detection Electromagnetic interference shielding Heat transfer

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Mode-locked fiber laser of 3.5 μm using a single-walled carbon nanotube saturable absorber mirror

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Chinese Optics Letters 2022年第1期20卷 79-84页

作者： Jincheng Wei Peng Li Linpeng Yu Shuangchen Ruan Keyi Li Peiguang Yan Jiachen Wang Jinzhang Wang Chunyu Guo Wenjun Liu Ping Hua Qitao Lü Shenzhen Key Laboratory of Laser Engineering Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education InstitutesGuangdong Provincial Key Laboratory of Micro/Nano Optomechatronics EngineeringCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China co.lege of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118China State Key Laboratory of Information Photonics and Optical co.munications School of ScienceBeijing University of Posts and TelecommunicationsBeijing 100876China Faculty of Engineering and Physical Sciences University of SouthamptonSouthampton SO 171BJUK Han’s Laser Technology Industry Group co. Ltd.Shenzhen 518057China

We report on a mid-infrared fiber laser that uses a single-walled carbon nanotube saturable absorber mirror to realize the mode-locking *** laser generates 3.5 μm ultra-short pulses from an erbium-doped fluoride fiber by utilizing a dual-wavelength pumping *** mode-locking is achieved at the 3.5 μm band with a repetition rate of 25.2 *** maximum average power acquired from the laser in the mode-locking regime is 25 *** experimental results indicate that the carbon nanotube is an effective saturable absorber for mode-locking in the mid-infrared spectral region.

关键词： mid-infrared laser fluoride fiber laser mode-locked laser saturable absorber

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Degradation and biological properties of Ca-P co.tained micro-arc oxidation self-sealing co.ting on pure magnesium for bone fixation

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Regenerative Biomaterials 2015年第2期2卷 107-118页

作者： Weidan Wang Peng Wan Chen Liu Lili Tan Weirong Li Lugee Li Ke Yang Institute of Metal Research Chinese Academy of Sciences72 Wenhua RoadShenyang 110016China University of Chinese Academy of Sciences Beijing 100049China EONTEC co. LtdDongguanGuangdong523662China

Poor co.rosion resistance is one of the main disadvantages for biodegradable magnesium-based metals,especially applied for bone fixation,where there is a high demand of bio-mechanical strength and *** co.ting has been proved as an effective method to co.trol the in vivo *** this study a Ca-P self-sealing micro-arc oxidation(MAO)co.ting was studied to verify its efficacy and biological properties by in vitro and in vivo *** was found that the MAO co.ting co.ld effectively retard the degradation acco.ding to immersion and electrochemical tests as well as 3D reco.struction by X-ray tomography after *** MAO co.ting exhibited no toxicity and co.ld stimulate the new bone ***,the Ca-P self-sealing MAO co.ting co.ld be a potential candidate for application of biodegradable Mg-based implant in bone fixations.

关键词： pure magnesium degradation self-sealing micro-arc oxidation co.ting in vivo implantation

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Joint effects of micro-sized polystyrene and chlorpyrifos on zebrafish based on multiple endpoints and gut microbial effects

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Journal of Environmental Sciences 2023年第4期126卷 184-197页

作者： Zhiyi Huang Xiangxiang Xiao Dali Wang Yuheng Zhong Qi Ding Jing You guangdong Key Laboratory of Environmental Pollution and Health Center for Environmental Microplastics StudiesSchool of EnvironmentJinan UniversityGuangzhou 511443China

microplastics often co.occur with a variety of organic co.taminants in aquatic environment and pose co.bined risks to aquatic wildlife. Here, we investigated joint effects of microsized polystyrene(mPS, 5 μm) and an organophosphate pesticide chlorpyrifos on zebrafish,using multiple endpoints at both fish individual and gut microbiota levels. It was revealed that mPS ingested by zebrafish accumulated in gut and liver, and caused oxidative stress, hyperactive swimming performance and histological damages in fish, and induced disorders and diversity alterations of the gut microbial co.munity. More importantly, mPS exhibited co.siderable adsorption capacity against chlorpyrifos, and those adsorbing chlorpyrifos presented greater effects on fish individuals but no different effects on gut microbiota co.pared to single mPS exposure. Together with body residues of chlorpyrifos in zebrafish,it was proposed that the joint effects between mPS and chlorpyrifos were attributed to the chlorpyrifos released from mPS within zebrafish. The present results provided a co.prehensive understanding of joint effects of mPS and co.taminants co.occurring in the environment and emphasized the importance of co.sidering the adsorbed chemicals in toxico.ogical studies of microplastics.

关键词： microplastics Polystyrene Joint effect Chlorpyrifos Zebrafish

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Effect of rare earth co.tent on microstructure and co.rosion resistance of hot-dip Zn-5Al alloy co.ted steel wire for bridge cables

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Journal of Iron and Steel Research International 2023年第10期30卷 2101-2110页

作者： Xiao-xiong Zhu Yi-fu Shen Cheng-tao Li Xiang Dai Guo-hao Xiao co.lege of Materials Science and Technology Nanjing University of Aeronautics and Astronautics(NUAA)Nanjing 211106JiangsuChina Jiangsu Tokyo Rope co. Ltd.Jiangyin 214425JiangsuChina Nanjing Vocational University of Industry Technology Nanjing 210023JiangsuChina

The effects of the co.tent of rare earth elements on the microstructure and properties of hot-dip Zn-5 Al alloy steel wire for bridge cables were *** microstructure of the hot-dip co.ting was analyzed using an optical microsco.e and a scanning electron microsco.e equipped with an energy-dispersive *** bonding force between the hot-dip co.ting and steel wire was determined by the winding *** co.rosion resistance of the steel wire hot-dip co.ting was tested by the electrochemical *** hot-dip Zn-5A1 alloy co.ting has a co.rosion-resistant structure co.posed of a zinc-rich phase and an aluminum-rich *** to the enhanced bonding force,the micro structure of the hot-dip co.ting of the Zn-5A1 alloy with rare earth elements is more co.pact and uniform than that without rare earth *** addition of rare earth elements improves the co.rosion resistance of Zn-5A1 alloy co.ted steel *** to the rare earth segregation,which prevents the co.rosion of the grain boundary and enhances the anti-intergranular co.rosion performance,steel wire exhibits the optimum co.rosion resistance when the co.tent of rare earth elements is 0.08 wt.%.

关键词： Bridge cable steel wire Hot dipping Rare earth co.tent co.rosion resistance microstructure

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