Templated Nanodimple Arrays with Tunable Nanostructures for Sensitive Surface Plasmon Resonance Analysis

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• 作者：Pei-Yu Chung ; Po-Yuan Wang ; Xuan Dou ; Peng Jiang
• 刊名：The Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：May 2, 2013
• 年：2013
• 卷：117
• 期：17
• 页码：8933-8940
• 全文大小：500K
• 年卷期：v.117,no.17(May 2, 2013)
• ISSN：1932-7455

文摘

This paper reports a simple and scalable colloidal templating technology for fabricating wafer-scale periodic plasmonic nanodimple arrays with tunable nanostructures. A double-layer, non-close-packed colloidal crystal鈥損olymer nanocomposite created by a spin-coating technique is used as structural template in a simple oxygen plasma etching process to fabricate periodic arrays of nanodimples. The resulting plasmonic arrays can sense a small dielectric refractive index change of 0.008, and they exhibit high SPR sensitivity of up to 520 nm per refractive index unit. The experimental plasmonic performance of the nanodimple arrays matches with the numerical simulations using a finite-difference time-domain model.