Author Affiliations
Abstract
Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen 518055, China
Single-molecule localization microscopy (SMLM) enables three-dimensional (3D) investigation of nanoscale structures in biological samples, offering unique insights into their organization. However, traditional 3D super-resolution microscopy using high numerical aperture (NA) objectives is limited by imaging depth of field (DOF), restricting their practical application to relatively thin biological samples. Here, we developed a unified solution for thick sample super-resolution imaging using a deformable mirror (DM) which served for fast remote focusing, optimized point spread function (PSF) engineering, and accurate aberration correction. By effectively correcting the system aberrations introduced during remote focusing and sample aberrations at different imaging depths, we achieved high-accuracy, large DOF imaging (8 μm) of the whole-cell organelles [i.e., nuclear pore complex (NPC), microtubules, and mitochondria] with a nearly uniform resolution of approximately 35 nm across the entire cellular volume.
Photonics Research
2024, 12(4): 821
作者单位
摘要
中国石油大学(北京)能源交叉学科基础研究中心,油气光学探测技术北京市重点实验室,北京 102249
具有低晶格热导率的稀土硫族化合物Y2Te3是一种非常有前途的新型热电材料,施加应变是调控热电材料热电性能的有效手段。本文采用第一性原理方法结合半经典玻尔兹曼输运理论,通过施加-4%到4%的应变对Y2Te3材料的热电性能进行应变调控。研究表明,施加压缩应变对Y2Te3材料热电性能的提高优于施加拉伸应变。300 K下p型Y2Te3的最大功率因数由0.4 mW·m-1·K-2提升到1.6 mW·m-1·K-2,n型Y2Te3在压缩应变下最大功率因数由8 mW·m-1·K-2提升到11 mW·m-1·K-2。300 K下p型Y2Te3在应变调控下最大热电优值ZT由0.07提升到0.15,n型Y2Te3在压缩应变下最大热电优值ZT由0.7提升到0.9。因此,n型Y2Te3具有非常优异的热电性能,通过施加应变可以有效调控Y2Te3材料的热电性能,n型Y2Te3具有作为热电材料的巨大潜力。
热电材料 应变 热电性能 硫族化合物 第一性原理 thermoelectric material strain thermoelectric property Y2Te3 Y2Te3 chalcogenide first-principle 
人工晶体学报
2023, 52(8): 1422

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