TiO2 Nanoparticle–Photopolymer Composites for Volume Holographic Recording
TiO2 Nanoparticle–Photopolymer Composites for Volume Holographic Recording
复制标题
DOI：
10.1002/adfm.200500095
复制
发表时间：
2005-10
影响因子：
19
通讯作者：
C. Sánchez;M. Escuti;C. V. Heesch;C. Bastiaansen;D. Broer;J. Loos;R. Nussbaumer
中科院分区：
文献类型：
--
作者：
C. Sánchez;M. Escuti;C. V. Heesch;C. Bastiaansen;D. Broer;J. Loos;R. Nussbaumer
提出了一种用于体全息记录的新型高效光聚合物。该材料由紫外光敏感的丙烯酸酯和平均尺寸为4纳米的接枝二氧化钛纳米颗粒组成。我们报道了折射率调制幅度高达15.5×10-3的全息光栅的形成--比没有纳米颗粒的基材提高了四倍以上--同时在可见光波长范围内保持了低散射水平和高透明度。研究和讨论了丙烯酸酯体系的组成对全息材料最终性能的影响。多官能团单体的存在有利于不同组分的组成分离，而单官能团丙烯酸酯的加入与纳米粒子的接枝高度相容，有利于稀释这些纳米粒子。
A new and efficient photopolymer for the recording of volume holograms is presented. The material comprises a mixture of UV‐sensitive acrylates and grafted titanium dioxide nanoparticles with an average size of 4 nm. We report the formation of holographic gratings with refractive‐index modulation amplitudes of up to 15.5 × 10–3—an improvement of more than a factor of four over the base material without nanoparticles—while maintaining a low level of scattering and a high transparency in the visible‐wavelength range. The influence of the composition of the acrylate system on the final properties of the holographic material is also investigated and discussed. The presence of multifunctional monomers favors the compositional segregation of the different components, while the addition of monofunctional acrylate, highly compatible with the grafting of the nanoparticles, favors the dilution of these nanoparticles.