光致聚合物
全息数据存储
全息术
材料科学
衍射效率
丙烯酸酯
傅里叶变换红外光谱
光学
单体
全息光栅
体全息图
聚合物
栅栏
分析化学(期刊)
光电子学
衍射光栅
化学
有机化学
复合材料
物理
作者
Diqin Zhang,Yu Zhao,Bin Guo,Zhen Zhang,Dejiao Hu,Hongzhen Wang,Jianguo Zhu,Yonghong Yan,Yuxia Zhao
标识
DOI:10.1016/j.eurpolymj.2023.112436
摘要
Photopolymer is well-recognized as an ideal holographic data storage medium. In order to improve the holographic performance of a two-stage photopolymer, five acrylate dendritic monomers (DM-1/2/3/4/5) with high refractive indices (1.590–1.634) are designed and synthesized in this study. Their structures are characterized by 1H NMR, 13C NMR, FTIR and HR-MS spectra, and their photopolymerization kinetics are investigated through real-time FTIR. Using these DMs as one recording monomer, a series of photopolymer samples with different formulations are fabricated. The influence of DM-1/2/3/4/5 on the holographic performances of these samples are explored under holographic exposure of a 532 nm laser. The results show that the photosensitivity and angle selectivity of these samples can be improved by adding these DMs. The most excellent holographic characteristics are obtained by a sample with 4% DM-1. Using it as a data storage medium, a volume holographic grating with high diffraction efficiency of 90% and narrow selection angle of 0.11° is recorded. Moreover, the sample achieves a high dynamic range of 13.7 and a low volume shrinkage of 0.36% after recording 60 holograms through angular-multiplexing with low record/read exposure dose, indicating its great application potential in holographic data storage.
科研通智能强力驱动
Strongly Powered by AbleSci AI