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On-demand engineerable visible spectrum by fine control of electrochemical reactions

National Science Review 2024年第3期11卷 239-249页

作者： Qirong Liu Lei Liu Yongping Zheng Min Li Baofu Ding Xungang Diao Hui-Ming Cheng Yongbing Tang Advanced Energy Storage Technology Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of Sciences Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced Technology Chinese Academy of Sciences School of Energy and Power Engineering North University of China School of Resource Environment and Safety EngineeringHunan University of Science and Technology School of Energy and Power Engineering Beihang University Shenzhen Key Laboratory of Energy Materials for Carbon Neutrality Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences

Tunability of optical performance is one of the key technologies for adaptive optoelectronic applications,such as camouflage clothing, displays, and infrared shielding. High-precision spectral tunability is of great importance for some special applications with on-demand adaptability but remains challenging. Here we demonstrate a galvanostatic control strategy to achieve this goal, relying on the finding of the quantitative correlation between optical properties and electrochemical reactions within materials. An electrochromic electro-optical efficiency index is established to optically fingerprint and precisely identify electrochemical redox reactions in the electrochromic device. Consequently, the charge-transfer process during galvanostatic electrochemical reaction can be quantitatively regulated, permitting precise control over the final optical performance and on-demand adaptability of electrochromic devices as evidenced by an ultralow deviation of <3.0%. These findings not only provide opportunities for future adaptive optoelectronic applications with strict demand on precise spectral tunability but also will promote in situ quantitative research in a wide range of spectroelectrochemistry, electrochemical energy storage, electrocatalysis, and material chemistry.

关键词： electrochromics fine control spectral tunability high precision galvanostatic control

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Study on fine Management of Construction Engineering Projects Based on BIM Technology:Taking the Construction of Group C Project of Zibo Cultural Center as an Example

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Journal of World Architecture 2022年第5期6卷 1-7页

作者： Ming Liu Zibo Vocational Institute Zibo 255314Shandong ProvinceChina

The roof steel structure of group C project of Zibo cultural center is composed of steel truss,welded H-shaped steel and large-diameter steel pipe embedded *** construction of embedded parts of inclined cylinder overhanging steel structure is *** stair square tube ladder beam requires precise angles and radians,complex processing,and construction site setting out is difficult.A three-dimensional visual building information model has been established for this projects which includes several aspects which are as follows:the development of the post anchor construction technology of large steel sleeve embedded parts with inclined cylinders based on Building Information Modeling(BIM)technology,multi discipline synthesis and collision optimization,the net height optimization of electromechanical pipelines,fine reinforcement management,BIM virtual construction *** this planning,14908 pipeline collisions,including 236 major collisions have been *** is used in handling and solving problems with the construction unit and the supervision *** greatly improves the project work efficiency and saves meeting *** optimization of electromechanical line collision and secondary masonry layout,more than RMB 9 million has been saved in terms of personnel and materials,effectively reducing material losses,saving manpower,and significantly improving the implementation efficiency of the *** on the on-site simulation,the project planning scheme of the enterprise was adjusted,efficient work allocation with less idle time were ensured,and the correct utilization of project funds and time were *** original extensive annual control and monthly control have been dynamically and accurately controlled to realize the dynamic understanding of the profits and losses of the project,and effectively reduce the occurrence of non-ideal situations.

关键词： Zibo cultural center Steel structure Building Information Modeling fine control

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