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Journal of Bionic Engineering 2022年第3期19卷 777-787页

作者： Wei Wu jiyu sun School of Mechanical Engineering University of Shanghai for Science and TechnologyShanghai200093China Key Laboratory of Bionic Engineering(Ministry of Education China)Jilin UniversityChangchun130022China

The architecture of multilayer acting in colorful appearance has been widely *** spite of this,it is interesting that dense multilayer in epicuticle for Popillia indgigonacea Motsch elytra not only helps presenting angle dependence color-changing,but also showing higher reduced modulus(Er)and hardness(H)to protect soft abdomen *** optical and nanomechanical properties of elytron were investigated by structural observation,optical experiments,nanoindentation and coupled bionic model *** peak reflectance gradually varies from 588 nm to 510 nm with color change from orange and yellow to green when the incidence angle switches from 0°to 60°,which is attributed to the regulated variation from refractive spectra between the layers in different *** addition,the relatively higher Er and H of elytron epicuticle and endocuticle could play a role in resisting force with its *** identify the multifunctional characteristics of multilayer,optical and mechanical simulations were conducted based on coupled bionic models,and a strong consistence between the experiments and simulations is *** multilayer could resist force with lowest strain and stress,and the structural thickness is the most necessary factors that could adjust the colors in color-changing process.

关键词： Cuticle Multilayer Angle-dependence color-changing Nanomechanical properties Coupled bionic

Corrosion Resistance and Antifouling Bioinspired Coating with Doped Polyaniline and TO@CA Self-Healing Nanocapsules

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Journal of Bionic Engineering 2023年第6期20卷 2826-2839页

作者： Hongli Tian Wenbo Du Yuchao Zhan Limei Tian Jie Zhao jiyu sun Key Laboratory of Bionic Engineering(Ministry of Education China)Jilin UniversityChangchun130022China National Key Laboratory for Remanufacturing Army Academy of Armored ForcesBeijing100000China

In this study,an integrative bioinspired coating system for antifouling and corrosion resistance was investigated,in which self-healing nanocapsules(tung oil calcium alginate,TO@CA),doped polyaniline and nano-titanium dioxide nanocomposites(SPAn–TiO_(2))and a biostructure metal surface were *** antifouling property of the bioinspired coating resulted from the synergistic antifouling effect of nano-TiO_(2)and acid-doped polyaniline in SPAn–TiO_(2).The protonated nitrogen with a positive charge in SPAn–TiO_(2)and the intrinsic bactericidal property of nano-TiO_(2)could damage negatively charged single-celled chlorella,endowing the composite coating with good antifouling performance(less algae attached on the surfaces after a 90-day antifouling test and a conductivity test).The composite bioinspired coating had excellent corrosion resistance,which was due to the good synergistic anticorrosion barrier effect of SPAn–TiO_(2)with TO@CA nanocapsules and the repairing ability of microcracks of TO@CA nanocapsules during the corrosion *** bioinspired coating with 2 wt%SPAn–TiO_(2)and 2 wt%TO@CA nanocapsules exhibited a better adhesion,corrosion resistance and antifouling performance than the other coatings did.

关键词： Corrosion resistance Antifouling Self-healing Multifunctional bioinspired coating Doped polyaniline

Study on the Vibration Reduction Characteristics of FWMAV Flexible Bionic Wings Mimicking the Hindwings of Trypoxylus dichotomus

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Journal of Bionic Engineering 2023年第5期20卷 2179-2193页

作者： Yongwei Yan Fa Song Nuo Xu Haochen Zhu Hongxu Xing Shujun Zhang jiyu sun Key Laboratory of Bionic Engineering(Ministry of Education China)Jilin UniversityChangchun130022China School of Computing and Engineering Gloucestershire UniversityCheltenhamGL502HRUK

Using the method of structural finite element topology optimization and analysis of the hindwings of Trypoxylus dichotomus,this work identified the main loading force transmission path and designed the initial structure of a bionic flexible wing.A structural design scheme of the vibration damping unit was proposed,and the structural mechanics and modal vibration characteristics were simulated and analyzed.3D printing technology was used to manufacture the designed bionic wing skeleton,which was combined with two kinds of wing membrane *** Flapping Wing Micro-aerial Vehicle(FWMAV)transmission mechanism vibration characteristics were observed and analyzed by a high-speed digital camera.A triaxial force transducer was used to record the force vibration of the flexible bionic wing flapping in a wind tunnel.A wavelet processing method was used to process and analyze the force *** results showed that the force amplitude was more stable,the waveform roughness was the lowest,and the peak shaving phenomenon at the z-axis was the least obvious for the bionic flexible wing model that combined the topology-optimized bionic wing skeleton with a polyamide elastic *** was determined to be the most suitable design scheme for the wings of FWMAVs.

关键词： Vibration reduction characteristics Bionic wings Flapping-wing micro-aerial vehicle(FWMAV) Beetle hindwings

Effects of self-healing biomimetic subsoiler on tillage resistance, wearcorrosion performance and soil disturbance morphology under different soil types

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International Journal of Agricultural and Biological Engineering 2023年第3期16卷 7-14页

作者： Yueming Wang Chenjie Lu Jing Chen Chenhuan Cui Yijie Pan Wilhelm Pfleging jiyu sun School of Engineering Huzhou UniversityHuzhou 313000ZhejiangChina Liaoning Provincial Institute of Agricultural Mechanization Shenyang 110161China School of Information and Electrical Engineering Hangzhou City University51 Huzhou StreetHangzhou 310015China FUSTEEL Co. LtdHuzhou 313000ZhejiangChina Institute for Applied Materials-Applied Materials Physics Karlsruhe Institute of TechnologyKarlsruhe 76344Germany Key Laboratory of Bionic Engineering(Ministry of Education China)Jilin UniversityChangchun 130022China

Subsoiling has been widely used all over the world as an important operation method of no-tillage *** energy-saving and life-extension,the tillage resistance and wear-corrosion of subsoilers have attracted wide *** this study,the tillage resistance,soil disturbance,wear and corrosion of subsoiler with S-T-SK-2#biomimetic structures(S means subsoiler;T means tine;SK means shank;2#,h/s=0.57,h=5 mm andα=45°.)and self-healing coating under two seasons,two locations with different soil properties(black loam and clay soil)and subsoiling speeds(2 km/h and 3.6 km/h)were *** soil moisture content and compactness affected the tillage resistance and *** tillage resistance and degree of corrosion on all subsoilers were much larger in clay soil than that in black loam *** with S-T-SK-2#,the tillage reduction rate of C-S-T-SK-2#(S-T-SK-2#with self-healing coating)was up to 14.32%in clay soil under the speed of 2 km/*** significance tests of regression equation results showed that subsoiler type and soil properties had a significant impact on soil disturbance coefficient,swelling of total soil layer,bulkiness of the plough *** is of a guiding significance for the analysis of soil *** mechanism of subsoiler coupling with biomimetic structures and self-healing coating was analyzed in *** depicted the guiding effect of biomimetic structure and the shield function of self-healing coating,resulting in anticorrosion and wear resistance of subsoiler.

关键词： soil types tillage resistance wear-corrosion soil disturbance self-healing

Rapid sterilisation and diabetic cutaneous regeneration using cascade bio-heterojunctions through glucose oxidase-primed therapy

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Bioactive Materials 2023年第7期25卷 748-765页

作者： Yi Deng Xumei Ouyang jiyu sun Xiuyuan Shi Yunfei Li Yau Kei Chan Weizhong Yang Shaojun Peng College of Biomedical Engineering School of Chemical EngineeringSichuan UniversityChengdu610065China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu610065China Zhuhai Institute of Translational Medicine Zhuhai People’s Hospital(Zhuhai Hospital Affiliated with Jinan University)ZhuhaiGuangdong519000China State Key Laboratory of Oral Diseases National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengdu610041China Department of Materials Imperial College LondonSW72AZLondonUnited Kingdom Department of Biomedical Engineering The City College of the City University of New YorkNew YorkUnited States Department of Mechanical Engineering The University of Hong KongHong KongChina Department of Ophthalmology The University of Hong KongHong KongChina

The cutaneous wound in diabetic patients frequently encounters intractable pathogenic infections due to the hyperglycemia micromilieu which is conducive to bacterial growth and *** the extensive clinical use of antibiotics to treat bacterial infections,the emergence of drug-resistant and super pathogens as well as the potential side effects of antibiotics have elicited alarming challenges to public *** address this daunting concern,we devise and develop a photo-activated cascade bio-heterojunctions(C-bio-HJs)for rapid sterilization and diabetic cutaneous *** the designed C-bio-HJs,photo-generated electron-hole pairs of graphite-phase carbon nitride(g-C_(3)N_(4))are effectively separated with the marriage of molybdenum disulfide(MoS_(2)),which achieves the augmented photodynamic antibacterial ***,glucose oxidase(GOx)tethered on the bio-HJs catalyzes glucose into hydrogen peroxide(H_(2)O_(2))in diabetic wounds for starvation ***,Mo4+enables the catalysis of H_(2)O_(2)into a highly effective hydroxyl radical(⋅OH)for chemodynamic-photothermal combined antibacterial *** in vitro and in vivo results authenticate the cascading antibacterial properties and skin regeneration-promoting effects of the C-bio-HJs,which provide a facile strategy to combat diabetic wound healing through the synergistic GOx-primed dynamic therapies.

关键词： Antibacterial therapy Bio-heterojunction g-C_(3)N_(4) Rapid sterilization Tissue regeneration

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用电行为分析系统的设计

电力系统装备 2024年第4期 157-158,161页

作者：戚娌娜陈潮洋孙吉裕陆阳刘志刚国网浙江省电力有限公司余姚市供电公司浙江余姚315400

随着居民用电需求的急剧增加,电能消耗日益庞大,这使得有效管理和控制电能的消耗显得尤为重要。此外,居民用电通常表现出一定的集中性,因此对电网的高负荷运行和电力供应稳定性构成了挑战。文章设计了一种用电行为分析系统,基于非侵入... 详细信息

随着居民用电需求的急剧增加,电能消耗日益庞大,这使得有效管理和控制电能的消耗显得尤为重要。此外,居民用电通常表现出一定的集中性,因此对电网的高负荷运行和电力供应稳定性构成了挑战。文章设计了一种用电行为分析系统,基于非侵入式负荷监测技术和区块链技术,该系统可实现居民用电行为分解、用电安全预警等功能,为居民安全用电和电力系统的稳定运行提供保障。

关键词：用电行为分析系统非侵入式负荷监测电器用电行为分析事件探测算法负荷识别算法

Nanomechanical Behaviour of the Membranous Wings of Dragonfly Pantala flavescens Fabricius

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Journal of Bionic Engineering 2016年第3期13卷 388-396页

作者： Yanru Zhao Dongsheng Wang Jin Tong jiyu sun The College of Mechanical and Power Engineering Henan Polytechnic University Jiaozuo 454000 China The Key Laboratory of Bionic Engineering (Ministry of Education China) and the College of Biological and Agricultural Engineering Jilin University (Nanling Campus) Changchun 130022 China

The dragonfly has excellent flying capacity and its wings are typical 2-dimensional composite materials in micro-scale or nano-scale. The nanomechanical behavior of dragonfly membranous wings was investigated with a nanoindenter. It was shown that the maxima of the reduced modulus and nanohardness of the in-vivo and fresh dragonfly wings are about at position of 0.7L, where L is the wing length. It was found that the reduced modulus and nanohardness of radius of the wings of dragonfly are large. The reduced modulus and nanohardness of Costa, Radius and Postal veins of the in-vivo dragonfly wings are larger than those of the fresh ones. The deformation, stress and strain under the uniform load were analyzed with finite element simulation software ANSYS. The deformation is little and the distribution trend of the strain is probably in agreement with that of the stress. It is shown that the main veins have better stabilities and load-bearing capacities. The understanding of dragonfly wings＇ nanomechanical properties would provide some references for improving some properties of 2-dimentional composite materials through the biomimetic designs. The realization of nanomechanical properties of dragonfly wings will provide inspirations for designing some new structures and materials of mechanical parts.

关键词： Pantala flavescens Fabricius membranous wing experimental optimization design nanoindentation nanome-chanieal property

Kinematics of Chinese toad Bufo gargarizans

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Science China(Technological Sciences) 2010年第11期53卷 2936-2941页

作者： WANG ChaoFei TONG Jin sun jiyu Key Laboratory of Engineering Bionics Ministry of EducationJilin UniversityChangchun 130022China College of Biological and Agricultural Engineering Jilin UniversityChangchun 130022China

A three-dimensional motion force tester for animal was used to measure the reaction forces of the feet of a Chinese toad (B. gargarizans) against a horizontal solid surface on which it crawled. The motion behavior of the Chinese toad was recorded by a high-speed camera on line. The motor function of every foot was analyzed. It was found that the lateral force represents the control ability of side-to-side locomotion, controls the lateral movement, and maintains a stable state for the sustainable creeping gesture. The forefeet play the assistant role and the hind feet play the main role in driving. The normal force of the forefeet is significantly greater than that of the hind feet, so the forefeet play the main role in supporting the body and the hind feet play the assistant role. The normal force is significantly greater than the lateral force and the driving force as well. There is little change for the friction force and the support angle of the all four feet. The average value of the support angle is 70°–80°. The Chinese toad’s vola friction coefficient of the forefeet is less than that of the hind feet. The above results indicate that the difference in kinematics and the material characteristic of the contact skin of the Chinese toad. The results could be useful to the structure design and gait optimization of some robots.

关键词： Chinese toad Bufo gargarizans kinematics 3-D motion force

Bio-inspirations for the Development of Light Materials based on the Nanomechanical Properties and Microstructures of Beetle Dynastes tityus

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Journal of Bionic Engineering 2019年第1期16卷 154-163页

作者： jiyu sun Wei Wu Zelai Song Jin Tong Shujun Zhang Key Laboratory of Bionic Engineering (Ministry of Education China)Jilin UniversityChangchun 130022China School of Computing and Technology Gloucestershire UniversityCheltenham GL50 2HRUK

Dynastes tityus(***)is a typical beetle whose elytra are light and *** primary function of elytra is to protect beetle's *** this paper,*** elytra were selected as the biological prototype for the investigation to obtain bio-inspirations for the design and development of light materials with high ratio of strength to ***,the microstructure investigation and quasi-static nanoindentation tests have been carried out on the ten samples of the selected elytra *** to reveal their mechanical properties and ***,based on the fmdings from the microstructure investigation and nanoindentation tests,three models of bio-inspired materials have been proposed for further study to gain the deep understanding of the relationships between the special mechanical characteristics and *** Finite Element Analysis(FEA)simulations have been performed on the three models for harvesting the bio-inspirations for the initial design of light ***,through comparative analysis of the findings from the microstructure investigation,the nanoindentation tests and the simulations,some meaningful bio-inspirations have been reaped for the future optimization of the design and development of light materials with high ratio of strength to mass.

关键词： beetle elytra bio-inspirations nano-mechanical properties microstructures light-weight materials with high strength

Review of application of biomimetics for designing soil-engaging tillage implements in Northeast China

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International Journal of Agricultural and Biological Engineering 2016年第4期9卷 12-21页

作者： Zhang Zhijun Jia Honglei sun jiyu School of Mechanical Science and Engineering Jilin UniversityChangchun 130022China Key Laboratory of Bionic Engineering(Ministry of Education) Jilin UniversityChangchun 130022China

The reduction of water resources and soil fertility in Northeast China will have a requirement on higher working efficiency of agricultural soil-engaging *** adhesion and resistance are main problems for soil-engaging tillage ***,the soil-burrowing or soil-digging animals give inspirations to resolve those *** fair,claw,toe,textured surface and scales have functions of anti-adhesion or resistance *** results provide a way to realize the sustainable development of modern agriculture by developing novel biomimetic agricultural machinery systems with independent intellectual property rights to meet conservation tillage requirements in the Northern China *** structures of some soil-burrowing or soil-digging animals,such as beetle,mole cricket,earthworm,mole,vole,pangolin,and snake,as well as their mechanisms of anti-adhesion or reducing resistance were reviewed in this *** applications in Northeast China were also presented in the paper,including moldboard,subsoiler components,furrow opener,roller,and biomimetic rototilling-stubble-breaking *** addition,the existed problems in agricultural engineering and the future development trends were discussed.

关键词： review agricultural engineering biomimetics soil-engaging tillage implements conservation tillage