超分辨光存储材料光学性能及分辨率的研究
文献类型：学位论文
| 作者 | 刘铁诚 |
| 文献子类 | 硕士 |
| 导师 | 阮昊 |
| 关键词 | 超分辨光存储,光学分辨率,光诱导-光抑制,二芳基乙烯,四苯基乙烯 Super-resolution optical storage, Optical resolution, Photoinduction-inhibition, Dithienylethene , Tetraphenylethylene |
| 其他题名 | Optical Properties and Resolution Research of Materials in Super-resolution Optical Storage |
| 英文摘要 | 随着大数据时代的到来，如何高效存储海量信息受到越来越多的关注，超分辨光存储由于具有可突破衍射极限提高存储密度的巨大潜力，有望实现真正的大容量、低能耗、长寿命海量信息存储。因此筛选和测试可应用于超分辨光存储的光学介质材料成为了研究热点之一。二芳基乙烯以单分子荧光开关为工作单元，广泛应用于生物标记、超分辨生物成像、三维光存储及多阶光存储等领域,而在超分辨光存储领域却鲜有报道。此外四苯基乙烯作为聚集诱导型材料近年来的研究热点，主要研究重点在新单体的合成上，在超分辨光存储中的光致聚集诱导荧光增强的研究鲜有报道。 本文利用自主搭建的飞秒激光脉冲荧光测试光路、开孔Z扫描及其他光学测试仪器，探究三种二芳基乙烯线性光学及非线性光学性质，系统分析在飞秒激光脉冲激发下二芳基乙烯光诱导态的转化效率和荧光态淬灭效率受飞秒激光脉冲波长、功率密度以及淬灭时间变化的影响，定义有效吸收转化阈值功率密度、荧光态的淬灭阈值功率密度等超分辨光学参数。并根据光学参数测量值理论计算二芳基乙烯在超分辨光存储中的分辨率，提出可应用于二芳基乙烯的双光束超分辨光存储、双光子双光束超分辨光存储记录方法及具体步骤，根据中科院高等研究院张力博士的RESOLFT模型，设计出相应的超分辨光存储读写原理样机。根据测试结果初步建立双光束超分辨光存储记录介质材料的筛选评价方法，并提出可适用于超分辨光存储的备选材料。此外，对于四苯基乙烯，采用光引发剂加抑制剂的方式使其具备光诱导态和光抑制态，并利用诱导光成功过实现了四苯基乙烯的光致聚集诱导荧光增强。 研究结果对超分辨光存储材料筛选评价、超分辨光存储信息记录方法、光致变色材料及聚集诱导材料应用于超分辨光存储领域等具有重要的参考价值。; In the big data era, digital information technology has been boosted both nationwide and worldwide. It has been taken much more attention in how to storage massive amounts of information effectively. Super-resolution optical storage is a promising method due to the fact that it can break the diffraction resolution barrier. It may also achieve large capacity, low energy consumption and long storage lifetime. The photochromic fluorescent dithienylethene derivatives are widely used in biolabeling、super-resolution microscopy、three dimensional optical storage and multi-wavelength and multi-level storage systems due to the fluorescent switch of single molecule. However, there are few reports in super-resolution optical storage. In addition, as an excellent material in aggregation-induced emission area, tetraphenylethylene was focused on synthesis. But there is few reports in photoinduced aggregation fluorescent enhancement in super-resolution optical storage. In this thesis, the linear and nonlinear optical properties of three dithienylethene photochromic derivatives were investigated by linear and two-photon fluorescence, open-aperture Z-scan and others devices. Our group has investigated the conversion efficiency of photoinduction state and fluorescent quenching efficiency change with time、wavelength and power density. We define the power density threshold value of effective energy absorption and fluorescent quenching power density threshold value in super-resolution optical storage. According to the nonlinear absorption and fluorescent quenching characteristics, the resolutions of dithienylethene derivatives in super-resolution optical storage were simulated and calculated. We design the super-resolution recording model and come up with the steps of recording. Besides, we design the principle prototype of super-resolution optical storage recording and reading which is based on the Zhangli’s RESOLFT optical storage prototype. Last but not least , we propose the evaluation of super-resolution recording materials and give some candidate materials which might be used in the super-resolution optical storage in the future. As for tetraphenylethylene, we propose photoinduced aggregation fluorescent enhancement according to tetraphenylethylene added with photosensitizers and photoinhibitors. These research results have important reference value for the recording model、the evaluation of recording materials and the applications of photochromic materials and aggregation induced emission materials. |
| 学科主题 | 光学工程 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/31057]  |
| 专题 | 中国科学院上海光学精密机械研究所 |
| 作者单位 | 中国科学院上海光学精密机械研究所 |
| 推荐引用方式 GB/T 7714 | 刘铁诚. 超分辨光存储材料光学性能及分辨率的研究[D]. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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