Surface Nanometer‐Scale Patterning in Realizing Large‐Scale Ordered Arrays of Metallic Nanoshells with Well‐Defined Structures and Controllable Properties
Surface Nanometer‐Scale Patterning in Realizing Large‐Scale Ordered Arrays of Metallic Nanoshells with Well‐Defined Structures and Controllable Properties
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DOI：
10.1002/adfm.201000467
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发表时间：
2010-08
影响因子：
19
通讯作者：
Shikuan Yang;W. Cai;Lingce Kong;Y. Lei
中科院分区：
文献类型：
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作者：
Shikuan Yang;W. Cai;Lingce Kong;Y. Lei
纳米壳阵列的表面图案在包括表面增强拉曼散射（Sers）传感器、锂离子电池、太阳能电池和光学器件在内的各种应用中发挥着重要作用。本文描述了一种创新的表面纳米图案化技术，用于实现具有明确结构的金属球形纳米壳的大规模有序阵列。以聚苯乙烯球为模板，在银胶体溶液中通过电泳法制备了银纳米壳阵列。所制备的银纳米壳阵列具有高度的可控性的结构参数，包括直径，表面粗糙度，和壳层间的间距，从而引起纳米壳阵列的可调性能。作为一个例子，可调谐的Sers和局域表面等离子体共振的纳米壳阵列被证明通过控制的结构参数。本文所示的表面纳米图案化技术是一种通用的制造工艺，不仅可以实现金属纳米壳阵列，还可以实现半导体和金属氧化物的纳米壳阵列。
Surface patterns of nanoshell arrays play an important role in diverse applications including surface‐enhanced Raman scattering (SERS) sensors, lithium‐ion batteries, solar cells, and optical devices. This paper describes an innovative surface nanopatterning technique for realizing large‐scale ordered arrays of metallic spherical nanoshells with well‐defined structures. Ag nanoshell arrays are prepared using polystyrene sphere templates by an electrophoretic process in Ag colloidal solutions. The fabricated Ag nanoshell arrays have a high controllability of the structural parameters, including the diameter, the surface roughness, and the intershell spacing, giving rise to the tunable properties of nanoshell arrays. As an example, tunable SERS and localized surface plasmon resonance of the nanoshell arrays are demonstrated by controlling the structural parameters. The surface nanopatterning technique shown in this paper is a general fabrication process in achieving not only metallic nanoshell arrays, but also nanoshell arrays of semiconductors and metallic oxides.