Optical clear adhesives (OCA) are key supporting materials in optical manufacturing and electronic assembly, which serve as critical supporting products for new-generation information technology, and refractive index of materials directly governs imaging quality and signal transmission efficiency in numerous application scenarios including lens assembly, filter lamination, fiber coupling and sensor packaging. Nevertheless, constrained by the structural properties of organic molecules and polymer chains, the refractive index of organic materials is usually below 1.7. Composites of polymers and inorganic nanoparticles have been proved to be an effective strategy to fabricate OCA featuring both high light transmittance and high refractive index. Focusing on recent research advances of organic-inorganic nanocomposites with high refractive index, this paper systematically summarizes research achievements covering design strategies, regulation mechanisms, preparation technologies and practical applications. Combined with relevant studies conducted by our research group, the future research direction toward transformation from lab-scale specimens to industrial commercial products is proposed.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |