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Ultra-antifreeze,ultra-stretchable,transparent,and conductive hydrogel for multi-functional flexible electronics as strain sensor and triboelectric nanogenerator

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Nano Research 2022年第6期15卷 5461-5468页

作者： Xinhuan Dai Yong Long Bing Jiang Wenbin Guo Wei Sha Jiangwen wang Zifeng Cong Jiwei Chen bingjun wang Weiguo Hu Chinese Academy of Sciences Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004China

Conductive hydrogels have become one of the most promising candidates for flexible electronics due to their excellent mechanical flexibility,durability of deformation,and good electrical ***,in real applications,severe environments occur frequently,such as extremely cold *** hydrogels always lack anti-freeze and anti-dehydration ***,the functions of electronic devices based on traditional hydrogels will quickly fail in extreme ***,the development of environmentally robust hydrogels that can withstand extremely low temperatures,overcome dehydration,and ensure the stable operation of electronic devices has become increasingly ***,we report a kind of graphene oxide(GO)incorporated polyvinyl alcohol-polyacrylamide(PVA-PAAm)double network hydrogel(GPPDhydrogel)which shows excellent anti-freeze *** GPPD-hydrogel exhibits not only good flexibility and ultra-high stretchability up to 2,000%,but ensures a high sensitivity when used as the strain sensor at−50°*** importantly,when serving as the electrode of a sandwich-structural triboelectric nanogenerator(TENG),the GPPD-hydrogel endows the TENG high and stable output performances even under−80°***,the GPPD-hydrogel is demonstrated long-lasting moisture retention over 100 *** GPPD-hydrogel provides a reliable and promising candidate for the new generation of wearable electronics.

关键词： triboelectric nanogenerators antifreeze ultra-stretchable hydrogels strain sensors multi-functional flexible electronics

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2023年新型光电半导体材料热点回眸

科技导报 2024年第1期42卷 188-203页

作者：马伟凡群平刘宇航闫晗周科王艺林赵超毕召召吴强王炳俊白海瑞西安交通大学金属材料强度国家重点实验室

第三代光电半导体具有可溶液低成本加工，透明轻薄，柔韧性好，可大面积成膜以及具有光电响应和离子传输能力等独特优势。聚焦此类半导体材料所制备的器件，回顾了有机光伏以及有机/无机杂化钙钛矿光伏的最新进展，探讨了其在柔性自供... 详细信息

第三代光电半导体具有可溶液低成本加工，透明轻薄，柔韧性好，可大面积成膜以及具有光电响应和离子传输能力等独特优势。聚焦此类半导体材料所制备的器件，回顾了有机光伏以及有机/无机杂化钙钛矿光伏的最新进展，探讨了其在柔性自供电、建筑光伏一体化等应用场景下的显著优势，讨论了第三代发光器件在材料选择和结构设计等方面的发展及其在照明和显示领域的应用前景；盘点了第三代半导体材料在人工光电突触方面的最新进展，主要聚焦于新机理、新器件结构、新功能，同时介绍了人工突触器件在感存算一体芯片、神经网络、智能仿生器件方面的最新应用。凝练了该领域所面临的重点科学问题，并展望了未来的科研及应用趋势。

关键词：第三代光电半导体有机光伏钙钛矿光伏第三代发光器件人工光电突触

Flexible,stretchable,and transparent InGaN/GaN multiple quantum wells/polyacrylamide hydrogel-based light emitting diodes

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Nano Research 2022年第6期15卷 5492-5499页

作者： Jiwei Chen Jiangwen wang Keyu Ji Bing Jiang Xiao Cui Wei Sha bingjun wang Xinhuan Dai Qilin Hua Lingyu Wan Weiguo Hu Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004China 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

Visualization is a direct,efficient,and simple interface method to realize the interaction between human and machine,whereas the flexible display unit,as the major bottleneck,still deeply hinders the advances of wearable and virtual reality *** obtain flexible optoelectronic devices,one of the effective methods is to transfer a high-efficient and long-lifetime inorganic optoelectronic film from its rigid epitaxial substrate to a foreign flexible/soft ***,piezo-phototronic effect is a fundamental theory for guiding the design of flexible optoelectronic ***,we demonstrate a flexible,stretchable,and transparent InGaN/GaN multiple quantum wells(MQWs)/polyacrylamide(PAAM)hydrogel-based light emitting diode coupling with the piezo-phototronic *** quantum well energy band and integrated luminous intensity(increased by more than 31.3%)are significantly modulated by external mechanical stimuli in the *** from the small Young's modulus of hydrogel and weak Van der Waals force,the composite film can endure an extreme tensile condition of about 21.1%stretching with negligible tensile strains transmitted to the InGaN/GaN *** the stable photoluminescence characteristics can be ***,the hydrogen-bond adsorption and excellent transparency of the hydrogel substrate greatly facilitate the packaging and luminescence of the optoelectronic *** thus,such a novel integration scheme of inorganic semiconductor materials and organic hydrogel materials would help to guide the robust stretchable optoelectronic devices,and show great potential in emerging wearable devices and virtual reality applications.

关键词： InGaN/GaN multiple quantum wells hydrogel light emitting diode(LED) piezo-phototronic effect

Conspicuous cruciform silk decorations deflect avian predator attacks

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Integrative Zoology 2022年第5期17卷 689-703页

作者： bingjun wang Long YU Nina MA Zengtao ZHANG Deyong GONG Rui LIU Daiqin LI Shichang ZHANG Centre for Behavioural Ecology and Evolution&State Key Laboratory of Biocatalysis and Enzyme Engineering School of Life SciencesHubei UniversityWuhanHubeiChina Department of Biological Sciences National University of SingaporeSingapore

Although camouflage as an effective antipredator defense strategy is widespread across animals,highly conspicuous color patterning is not uncommon *** orb-web spiders adorn their webs with extra bright white *** conspicuous decorations are hypothesized to deter predators by warning the presence of sticky webs,camouflaging spiders,acting as a decoy,or intimidating predators by their apparent *** decorations may also deflect predator attacks from ***,empirical evidence for this deflection function remains ***,we tested this hypothesis using the X-shaped silk cruciform decorations built by females of Argiope *** employed visual modeling to quantify the conspicuousness of spiders and decorations from a perspective of avian ***,we determined actual predation risk on spiders using naïve chicks as *** bodies and decorations were conspicuous against natural backgrounds to the avian visual *** attacked the spider main bodies significantly less frequently on the decorated webs than on the undecorated webs,thus reducing predation *** both spiders and decorations were present,chicks also attacked the spider main bodies and their legs or decorations,and not randomly:they attacked the legs or decorations sooner and more frequently than they attacked the main bodies,independent of the ratio of the surface area between the decoration and spider *** the increase in detectability,incorporating a conspicuous cruciform decoration to the web effectively defends the spider by diverting the attack toward the decoration or leg,but not by camouflaging or intimidating,thus,supporting the deflection hypothesis.

关键词： Argiope minuta cruciform decoration predator deflection visual defense visual modeling

建筑工程中安全管理存在的问题及解决措施分析

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中国厨卫 2024年第3期23卷 217-219页

作者：王炳俊襄汾县住房和城乡建设管理局山西临汾041000

在当前的建设发展趋势中,建筑单位应强化自身的责任意识,不断优化现有的安全管理体系,制定出合适的建设计划,以保证安全管理工作的顺利开展。文章深入分析了建筑工程中安全管理的问题,提出了相应的解决措施,从而提高了建筑工程安全管理... 详细信息

在当前的建设发展趋势中,建筑单位应强化自身的责任意识,不断优化现有的安全管理体系,制定出合适的建设计划,以保证安全管理工作的顺利开展。文章深入分析了建筑工程中安全管理的问题,提出了相应的解决措施,从而提高了建筑工程安全管理水平。

关键词：建筑工程安全管理具体对策

Adaptive nonlinear Kalman filters based on credibility theory with noise correlation

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Chinese Journal of Aeronautics 2024年第6期37卷 232-243页

作者： Quanbo GE Zihao SONG Bingtao ZHU bingjun ZHANG School of Automation Nanjing University of Information Science and TechnologyNanjing 210044China Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology Nanjing 210044China School of Electrical and Automation Engineering East China Jiaotong UniversityNanchang 330013China School of Logistics Engineering Shanghai Maritime UniversityShanghai 201306China School of Electronic and Information Engineering Tongji UniversityShanghai 200092China

To solve the divergence problem and overcome the difficulty in guaranteeing filtering accuracy during estimation of the process noise covariance or the measurement noise covariance with traditional new information-based nonlinear filtering methods,we design a new method for estimating noise statistical characteristics of nonlinear systems based on the credibility Kalman Filter(KF)theory considering noise *** method first extends credibility to the Unscented Kalman Filter(UKF)and Extended Kalman Filter(EKF)based on the credibility ***,an optimization model for nonlinear credibility under noise related conditions is established considering noise correlation.A combination of filtering smoothing and credibility iteration formula is used to improve the real-time performance of the nonlinear adaptive credibility KF algorithm,further expanding its application scenarios,and the derivation process of the formula theory is ***,the performance of the nonlinear credibility filtering algorithm is simulated and analyzed from multiple perspectives,and a comparative analysis conducted on specific experimental *** simulation and experimental results show that the proposed credibility EKF and credibility UKF algorithms can estimate the noise covariance more accurately and effectively with lower average estimation time than traditional methods,indicating that the proposed algorithm has stable estimation performance and good real-time performance.

关键词： Kalman filter Extended Kalman Filter(EKF) Unscented Kalman Filter(UKF) Credibility Noise correlation

Simulation of gas-solid flow characteristics of the circulating fluidized bed boiler under pure-oxygen combustion conditions

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Chinese Journal of Chemical Engineering 2024年第6期70卷 9-19页

作者： Kaixuan Gao Xiwei Ke bingjun Du Zhenchuan wang Yan Jin Zhong Huang Yanhong Li Xuemin Liu Key Laboratory of Special Equipment Safety and Energy-Saving for State Market Regulation China Special Equipment Inspection&Research InstituteBeijing 100029China Department of Energy and Power Engineering Tsinghua UniversityBeijing 100084China School of Electrical and Power Engineering Taiyuan University of TechnologyTaiyuan 030024China

Under the pressure of carbon neutrality,many carbon capture,utilization and storage technologies have witnessed rapid development in the recent years,including oxy-fuel combustion(OFC)***,the conventional OFC technology usually depends on the flue gas recirculation system,which faces significant investment,high energy consumption,and potential low-temperature corrosion *** these deficiencies,the direct utilization of pure oxygen to achieve particle fluidization and fuel combustion may reduce the overall energy consumption and CO_(2)-capture *** this paper,the fundamental structure of a self-designed 130 t·h^(-1) pure-oxygen combustion circulating fluidized bed(CFB)boiler was provided,and the computational particle fluid dynamics method was used to analyze the gas-solid flow characteristics of this new-concept boiler under different working *** results indicate that through the careful selection of design or operational parameters,such as average bed-material size and fluidization velocity,the pure-oxygen combustion CFB system can maintain the ideal fluidization state,namely significant internal and external particle ***,the contraction section of the boiler leads to the particle backflow in the lower furnace,resulting in the particle suspension concentration near the wall region being higher than that in the center ***,the upper furnace still retains the classic core-annulus flow *** addition to increasing solid circulation rate by reducing the average bed-material size,altering primary gas ratio and bed inventory can also exert varying degrees of influence on the gas-solid flow characteristics of the pure-oxygen combustion CFB boiler.

关键词： Circulating fluidized bed Pure-oxygen combustion Gas-solid flow characteristics Simulation CO_(2)capture

Advanced nanotherapeutics inspired by the abnormal microenvironment of leukemia

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Nano Research 2024年第9期17卷 8285-8300页

作者： Hao Zhang Tian Liu Mengyu Liu Shuo wang Yuetong Huang Yifan Ma bingjun Sun Zhonggui He Jin Sun Department of Pharmaceutics Wuya College of InnovationShenyang Pharmaceutical UniversityShenyang 110016China Joint International Research Laboratory of Intelligent Drug Delivery Systems Ministry of EducationShenyang 110016China

During the development of leukemia,the overgrowth of leukemia cells in the bone marrow transforms the normal hematopoietic microenvironment into the leukemia microenvironment which favors its growth and inhibits normal hematopoietic stem *** leukemia microenvironment exhibits abnormalities in redox substances,metabolism,immune response,mesenchymal cells,extracellular matrix,stromal cells,hypoxia,and *** factors collectively provide a shelter for the malignant proliferation of leukemia ***,as the understanding of the leukemia microenvironment deepens,targeting or remodeling the abnormal leukemia microenvironment is becoming an effective strategy for leukemia *** technology can effectively change pharmacokinetic profiles,thus demonstrating many advantages in modulating the leukemia microenvironment and improving therapeutic *** this review,we outline the characteristics of abnormal leukemia bone marrow microenvironment,focusing on the abnormal changes in the redox,metabolic and immune *** also summarize emerging nanotechnology strategies in remodeling or targeting the aforementioned abnormal *** addition,the unique advantages and bright prospects of nanotechnology in remodeling and targeting the leukemia microenvironment are discussed.

关键词： nanotherapeutics immunity metabolism redox leukemia microenvironment

Vermicompost:In situ retardant of antibiotic resistome accumulation in cropland soils

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Journal of Environmental Sciences 2024年第7期141卷 277-286页

作者： Meirui Mu Fengxia Yang bingjun Han Guisheng Tian Keqiang Zhang Agro-Environmental Protection Institute Ministry of Agriculture and Rural AffairsTianjin 300191China Key Laboratory of Low-carbon Green Agriculture in North China Ministry of Agriculture and Rural Affairs P.R.ChinaBeijing 10083China Wuxue City Agriculture and Rural Bureau Wuhan 435400China

The dissemination of antibiotic resistance genes(ARGs)in soil has become a global environmental *** is gaining prominence in agricultural practices as a soil amendment to improve soil ***,its impact on soil ARGs remains unclear when it occurs in *** comprehensively explored the evolution and fate of ARGs and their hosts in the field soil profiles under vermicompost application for more than *** application increased several ARG loads in soil environment but decreased the high-risk bla-ARGs(bla_(ampC),bla_(NDM),and bla_(GES-1))by log(0.04-0.43).ARGs in soil amended with vermicompost primarily occurred in topsoil(approximately 1.04-fold of unfertilized soil),but it is worth noting that their levels in the 40-60 cm soil layer were the same or even less than in the unfertilized *** microbial community structure changed in soil profiles after vermicompost *** application altered the microbial community structure in soil profiles,showing that the dominant bacteria(i.e.,Proteobacteria,Actinobacteriota,Firmicutes)were decreased 2.62%-5.48%with the increase of soil depth.A network analysis further revealed that most of ARG dominant host bacteria did not migrate from surface soil to deep *** particular,those host bacteria harboring high-risk bla-ARGs were primarily concentrated in the surface *** study highlights a lower risk of the propagation of ARGs caused by vermicompost application and provides a novel approach to reduce and relieve the dissemination of ARGs derived from animals in agricultural production.

关键词： Vermicompost application Antibiotic resistance genes Vertical migration Soil profile Agricultural soils