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基底折射率对金银复合纳米阵列的制备及光学性能的影响 被引量:1

Effect of Refractive Index of Substrate on Fabrication and Optical Properties of Hybrid Au-Ag Triangular Nanoparticle Arrays
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摘要 以石英和不同型号的玻片为基底,系统研究了基底折射率对周期性金银复合纳米阵列的制备及其光学性能的影响。采用离散偶极子近似(DDA)数值方法研究了复合阵列的局部表面等离子共振(LSPR)光谱特性,计算结果表明,当基底折射率为1.43和1.68时,纳米阵列的折射率灵敏度(RIS)和品质因子(FOM)比较优异。利用纳米球刻蚀法(NSL)制备了二维周期性复合纳米点阵结构,实验结果表明,当基底折射率为1.43和1.68时,基底与贵金属纳米颗粒有较好的粘合度,纳米阵列结构形貌比较规则清晰。 Based on the substrate of silica and different types of slides, the effect of refractive index of substrate on fabrication and optical properties of hybrid Au- Ag triangular periodic nanoparticle arrays is systematically investigated. The optical spectrum of localized surface plasmon resonance(LSPR) simulated by discrete dipole approximation(DDA) numerical method shows that the nanoparticle arrays can obtain better refractive index sensitivity(RIS) and figure of merit(FOM), when refractive index of substrate is 1.43 and 1.68, respectively. The nanosphere lithography(NSL) is used to fabricate the periodic nanostructure arrays. The experimental results demonstrate that when refractive index of substrate is 1.43 and 1.68, nanoparticles and substrate have better adhesive ability. Meanwhile, the nanoparticles both form a large-scale monolayer array with the hexagonally close-packed structure.
出处 《激光与光电子学进展》 CSCD 北大核心 2015年第5期157-162,共6页 Laser & Optoelectronics Progress
基金 国家自然科学基金(11074207) 厦门科技项目(3502Z20143020 2012S0484) 福建省教育厅科技项目(JA11157 12200) 集美大学潘金龙基金(C512038)
关键词 复合纳米阵列 基底折射率 离散偶极子近似 纳米球刻蚀 hybrid Au-Ag nanoparticles substrate refractive index discrete dipole approximation nanosphere lithography
作者简介 叶文才(1964-),男,硕士,副教授,主要从事微纳光学材料方面的研究。E—mail:yc646800@jmu.edu.cn。 通信联系人。E-mail:abcd1161@163.com
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