Besides the refractive index, optical dispersion (Abbe number), birefringence and optical transparency are often involved in designing HRIPs for practical optical fabrications. Incorporation of high- nnanoparticles into polymers seems to be a more promising strategy to achieve a refractive index higher than 1.80 however, the obtained organic–inorganic hybrid materials sometimes suffer from poor storage stability, higher optical loss and poor processability. However, their upper n limitation is usually below 1.80. For intrinsic HRIPs, aromatic rings, sulfur-containing groups, halogens except fluorine and organometallic moieties are often utilized to increase their refractive indices. High refractive indices have been achieved either by introducing substituents with high molar refractions to make intrinsic HRIPs or by combining high- nnanoparticles with polymer matrixes to make HRIP nanocomposites. Rapid developments in advanced photonic devices have led to the increasing exploration of high refractive index (high- n) materials, particularly high-refractive-index polymers (HRIP).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |