分类： 物理学 >> 交叉学科物理及相关领域的科学与技术 提交时间： 2024-02-27
摘要： The energy storage and conversion found in ferroelectrics realize through polar domain and domain wall microstructures resulted in complex polar topologies or within transformations from macro/micro domain to nano domain. The physical models are adopted with basic domains and domain walls including 90o, 180o, 71o and 109o classified into two categories of 180o and α-angle, and are reconstructed with equivalent circuits simplified according to the reported patterns. Although electrical energy is known to be maintained by the balance of charging and loss, the effect of circuits on microstructure has been rarely explored because of the relative paucity of patterns implemented experimentally for domain and domain wall. And here the diagrammatic sketches of vortex pattern and transformation into nano domain are designed and derived into their respective formulas of total capacitance and energy density with crucial structural features. The findings reveal novel mechanisms on energy storage by microstructures that can be used to propose effective creation strategies even in designing modern measure equipment.
分类： 天文学 >> 天文学 提交时间： 2025-05-09 合作期刊: 《Research in Astronomy and Astrophysics》
摘要： Time-domain astronomy is one of the most important areas. Large sky area, deep-field, and short timescale are the priority of time-domain observations. SiTian is an ambitious ground-based project processing all sky optical monitoring, aiming for a sky-survey timescale of less than 1 day. It is developed by the Chinese Academy of Sciences, an integrated network of dozens of 1 m class telescopes deployed worldwide. The Mini-SiTian Telescope Array is being carried out for demonstrations on optical design, group scheduling, and software pipeline developments, to overcome the high technical and financial difficulties of the SiTian project. One array contains three 300 mm F/3 telescopes, with an FOV of 5° over the 400–1000 nm wavelength range. The Mini-SiTian Telescope Array is now under commissioning in Xinglong Observatory, and a perfect platform for technical research and educational purposes.
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