Tailoring plasmon resonances in the deep-ultraviolet by size-tunable fabrication of aluminum nanostructures
Tailoring plasmon resonances in the deep-ultraviolet by size-tunable fabrication of aluminum nanostructures
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DOI：
10.1063/1.4747489
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发表时间：
2012-08-20
影响因子：
4
通讯作者：
Kawata, Satoshi
中科院分区：
文献类型：
--
作者：
Taguchi, Atsushi;Saito, Yuika;Kawata, Satoshi
通过以尺寸可控制的方式制造铝（AL）纳米结构，在深脉度（DUV）波长处控制局部表面等离子体共振。根据制造的结构尺寸，在近紫外线的波长下降到270 nm（4.6 eV）的波长获得了等离子体的共振。这种精确的尺寸控制是通过纳米圈光刻技术和其他微波加热来实现的，以缩小胶体纳米层面膜的封闭式单层中的空间。通过调整微波加热时间，可以将Al纳米结构的尺寸从80 nm到50 nm控制，而无需使用不同尺寸的纳米层珠。借助提出的制造技术的出色可控性和多功能性，制造的Al纳米结构有望用作DUV等离子体底物，这是一个轻度收获平台，用于介导位于金属纳米结构附近的UV光子和放置的分子之间的较强的光线相互作用。 （c）2012年美国物理研究所。 [http://dx.doi.org/10.1063/1.4747489]
Localized surface plasmon resonances were controlled at deep-ultraviolet (DUV) wavelengths by fabricating aluminum (Al) nanostructures in a size-controllable manner. Plasmon resonances were obtained at wavelengths from near-UV down to 270 nm (4.6 eV) depending on the fabricated structure size. Such precise size control was realized by the nanosphere lithography technique combined with additional microwave heating to shrink the spaces in a close-packed monolayer of colloidal nanosphere masks. By adjusting the microwave heating time, the sizes of the Al nanostructures could be controlled from 80 nm to 50 nm without the need to use nanosphere beads of different sizes. With the outstanding controllability and versatility of the presented fabrication technique, the fabricated Al nanostructure is promising for use as a DUV plasmonic substrate, a light-harvesting platform for mediating strong light-matter interactions between UV photons and molecules placed near the metal nanostructure. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4747489]