局域表面等离子体共振辅助的金纳米棒/聚合物纳米复合材料的双光子聚合

本文研究了金纳米棒的局域表面等离子体共振效应在双光子聚合过程中的作用，即当激发光与金纳米棒表面等离子体共振波长相匹配时，会在金纳米棒表面产生很强的局域电磁场，从而引发双光子聚合。通过采用与金纳米棒表面等离子体共振波长相同的飞秒激光，在低于光刻胶聚合阈值的功率下照射含有金纳米棒的光刻胶，制备聚合物包覆金纳米棒的纳米复合材料。透射电子显微镜结果表明，当飞秒激光功率为0.6 W、光斑直径为1.6 cm、照射时间为0.3 s时，金纳米棒表面成功聚合上厚度为5 nm左右的聚合物。本研究在制备聚合物/金属纳米粒子方面提供了一种简单可行的方法，有望在纳米光子学、纳米传感器等新兴领域得到应用。

Local Surface Plasmonic Resonance Enhancement of Gold Nanorod/Polymer Nanocomposites in Two-photon Photopolymerization

In this paper, we study the local surface plasmon resonance effect of gold nanorods in the two-photon polymerization process. As excitation light matches gold nanorods surface plasma resonance wavelength, the surface of gold nanorods has strong local electromagnetic fields which can cause two-photon polymerization. By employing a femtosecond laser, whose wavelength is the same as the gold nanorods longitudinal absorption peak wavelength in the photoresist, polymer/metal nanocomposites have been prepared. Transmission electron microscope (TEM) images show that the surface of the gold nanorods covers a polymer layer of 5 nm thickness when the femtosecond laser power is 0.6 W, spot diameter is 1.6 cm, irradiation time is 0.3 s. This study would provide a facile method for the preparation of polymer/metal nanoparticles, which might be applied in the emerging field, such as photonics and nanosensors.