Surface plasmon enhanced broadband spectrophotometry on black silver substrates
Surface plasmon enhanced broadband spectrophotometry on black silver substrates
复制标题
DOI：
10.1063/1.3599551
复制
发表时间：
2011-06-13
影响因子：
4
通讯作者：
Liu, Gang Logan
中科院分区：
文献类型：
--
作者：
Xu, Zhida;Chen, Yi;Liu, Gang Logan
我们证明了表面等离子体诱导增强的光学成像和光谱上的银涂层的硅纳米锥，我们称之为黑银。采用可批量生产的纳米制造方法制备了具有致密均匀的纳米锥森林结构的黑色银。它可以有效地捕获入射光子并将其转换为宽波长范围内的局域等离子体激元，使紫外到近红外范围内的光吸收增强12倍，可见荧光增强约30倍，拉曼散射增强因子高达约10（8）。我们展示了黑银在高灵敏度和宽带分子光学传感方面的潜力。(C)2011年美国物理学会。[doi：10.1063/1.3599551]
We demonstrate surface plasmon-induced enhancements in optical imaging and spectroscopy on silver coated silicon nanocones which we call black silver. The black silver with dense and homogeneous nanocone forest structure is fabricated with a mass-producible nanomanufacturing method. It can efficiently trap and convert incident photons into localized plasmons in broad wavelength range, permitting the enhancement in optical absorption from ultraviolet to near infrared range by 12 times, the visible fluorescence enhancement of similar to 30 times and the Raman scattering enhancement factor up to similar to 10(8). We show the potential of the black silver in high sensitivity and broadband optical sensing of molecules. (C) 2011 American Institute of Physics. [doi:10.1063/1.3599551]