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Application of Vacuum Photoelectric Detection Technology in Super-Resolution System
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作者 Kai Gu Xuefeng Liu +2 位作者 Yang Zhang hanwen zhao Weiping Liu 《Optics and Photonics Journal》 2020年第6期141-148,共8页
<div style="text-align:justify;"> Due to the wave characteristics of light, diffraction occurs when the light passes through the optical system, so that the resolution of the ordinary far-field optical... <div style="text-align:justify;"> Due to the wave characteristics of light, diffraction occurs when the light passes through the optical system, so that the resolution of the ordinary far-field optical system is limited by the size of the Airy disk diameter. There are various factors that cause image quality degradation during system detection and imaging, such as optical system aberrations, atmospheric inter-ference, defocusing, system noise and so on. Super-resolution optical imaging technology is the most innovative breakthrough in the optical imaging and detection field in this century. It goes beyond the resolution limit of ordinary optical systems or detectors, and can get more details and information of the structure, providing unprecedented tools for various fields. Compared with ordinary optical systems, super-resolution systems have very high requirements on the signals to be detected, which cannot be met by ordinary detection techniques. Vacuum photoelectric detection and imaging technology is equipped with the characteristics of high sensitivity and fast response. It is widely used in super-resolution systems and has played a great role in super-resolution systems. In this paper, the principles and structure of the image-converter streak camera super-resolution system, scanning electron microscopy super-resolution system and laser scanning confocal super-resolution system will be sorted out separately, and the essential role of the vacuum photoelectric detection technology in the ultra-microscopic sys-tem will be analyzed. </div> 展开更多
关键词 DIFFRACTION Image Quality Super-Resolution System Vacuum Photoelectric Detection
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基于Diels-Alder反应的自修复环氧树脂的制备和修复行为 被引量:7
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作者 何霞 王飞 +2 位作者 赵翰文 王彦平 冯利邦 《材料研究学报》 EI CAS CSCD 北大核心 2019年第8期635-640,共6页
先使环氧氯丙烷与糠胺反应合成含有呋喃环的双环氧基糠基缩水甘油胺(DGFA),再与双马来酰亚胺发生Diels-Alder(DA)反应制备出热可逆自修复环氧树脂EP-DA。用FT-IR表征了EP-DA的化学结构和热可逆性。模拟了实际使用过程中环氧树脂受到冲... 先使环氧氯丙烷与糠胺反应合成含有呋喃环的双环氧基糠基缩水甘油胺(DGFA),再与双马来酰亚胺发生Diels-Alder(DA)反应制备出热可逆自修复环氧树脂EP-DA。用FT-IR表征了EP-DA的化学结构和热可逆性。模拟了实际使用过程中环氧树脂受到冲击破环而内部产生裂纹、进行热处理使裂纹愈合实现了材料的自修复过程。根据宏观定性观察和弯曲载荷恢复的定量测量,证实了这种环氧树脂具有良好的自修复性能且可实现多次破坏的自修复。这种环氧树脂具有优异的再加工性能,可实现废旧环氧树脂的回收再利用。 展开更多
关键词 有机高分子材料 自修复 DIELS-ALDER反应 环氧树脂 热可逆
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