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1宽视场远距离光学散射成像技术研究进展显示文摘散射体内部颗粒分布及折射率分布的不均匀对经过散射体的携带目标信息的光子传播造成干扰,导致直接探测的图像失真。针对该问题,发展了众多的光学散射成像技术,实现了部分特定散射介质条件下的目标成像。介绍了基于弹道光子优化采集的部分传统散射成像技术的原理,还介绍了最新发展的计算散射成像技术的基本原理与技术特点。计算散射成像技术正朝着充分利用大光学厚度散射介质引起的非弹道光子的方向发展,其中基于光学记忆效应和相位恢复的算法、相干衍射成像、叠层迭代引擎等计算成像技术可能适应厚散射介质动态变化、目标非稀疏性等特点,有望应用于宽视场、远距离散射成像领域。李修建 唐武盛 衣文军 祁俊力 2021中国激光2021,48,4:6
2Stretchable and self-healable spoof plasmonic meta-waveguide for wearable wireless communication system显示文摘Microwave transmission lines in wearable systems are easily damaged after frequent mechanical deformation,posing a severe threat to wireless communication.Here,we report a new strategy to achieve stretchable microwave transmission lines with superior reliability and durability by integrating a self-healable elastomer with serpentine-geometry plasmonic meta-waveguide to support the spoof surface plasmon polariton(SSPP).After mechanical damage,the self-healable elastomer can autonomously repair itself to maintain the electromagnetic performance and mechanical strength.Meanwhile,the specially designed SSPP structure exhibits excellent stability and damage resistance.Even if the self-healing process has not been completed or the eventual repair effect is not ideal,the spoof plasmonic meta-waveguide Can still maintain reliable performance.Self-healing material enhances strength and durability,while the SSPP improves stability and gives more tolerance to the self-healing process.Our design coordinates the structural design with material synthesis to maximize the advantages of the SSPP and self-healing material,signifcantly improving the relability and durability of stretchable microwave transmission lines.We also perform communication quality experiments to demonstrate the potential of the proposed meta-waveguide as interconnects in future body area network systems.Bu-Yun Yu De-Wei Yue Ke-Xin Hou Lu JU Hao Chen Cong Ding Zhen-Guo Liu Yun-Qian Dai Hari Krishna Bisoyi Ying-Shi Guan Wei-Bing Lu Cheng-Hui Li Quan Li 2022Light(Science & Applications)2022,11,11:1
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