Preparation of metallic-dielectric spheres used to fabricate photonic crystals with electroless plating method

Mingwei Zhu; Minquan Wang; Guodong Qian; Zhiyu Wang; Xianping Fan; Zhanglian Hong; Lei Huang; Guoping Ling

doi:10.1117/12.517451

16 July 2003 Preparation of metallic-dielectric spheres used to fabricate photonics crystals with electroless plating method

Mingwei Zhu, Minquan Wang, Guodong Qian, Zhiyu Wang, Xianping Fan, Zhanglian Hong, Lei Huang, Guoping Ling

Author Affiliations +

Proceedings Volume 5061, International Symposium on Photonic Glass (ISPG 2002); (2003) https://doi.org/10.1117/12.517451
Event: International Symposium on Photonic Glass, 2002, Shanghai, China

Abstract

Photonic crystals made of metals such as silver and gold have been theoretically demonstrated to exist complete photonic band gaps (CPBG). We studied the preparation of metallic-dielectric spheres, which have the same effect as metals and can be used to fabricate a new type of photonic crystals. By using the Electroless Plating Method, SiO₂ spheres 300nm in diameter were coated with an about 20nm silver layer. The derived samples precoated with copper showed more homogeneous and much thinner silver layers compared with the directly coated ones. Our experiments also indicated that the sensitization and activation processes were necessary for the copper coating processes, although had little effect on the silver particle sizes as well as the layers thickness. Nuclear-growth mechanism is responsible for the deposition of both silver and copper nanoparticles on the surface of the spheres.

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Mingwei Zhu, Minquan Wang, Guodong Qian, Zhiyu Wang, Xianping Fan, Zhanglian Hong, Lei Huang, and Guoping Ling "Preparation of metallic-dielectric spheres used to fabricate photonics crystals with electroless plating method", Proc. SPIE 5061, International Symposium on Photonic Glass (ISPG 2002), (16 July 2003); https://doi.org/10.1117/12.517451

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