Optical Properties of Noncontinuous Gold Shell Engineered on Silica Mesosphere
Optical Properties of Noncontinuous Gold Shell Engineered on Silica Mesosphere
复制标题
二氧化硅介层上非连续金壳的光学性质
DOI:
10.1007/s11468-013-9604-0
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发表时间:
2014-02
期刊:
影响因子:
3
通讯作者:
Fang, Yan
中科院分区:
文献类型:
--
作者:
Li, Zhipeng;Wang, Peijie;Zhang, Lisheng;Fang, Yan
The optical properties of individual noncontinuous shells with different gold coverage are investigated by the single-particle dark field scattering measurements and single-particle surface-enhanced Raman scattering (SERS) measurements at different excitation wavelengths. By controlling the growth of gold seeds, multi-metallic nanogaps/crevices with different optical responses are assembled on silica mesospheres forming noncontinuous shells that can be confirmed through the transmission electron microscope images. We find the surface plasmon resonance of single shell red-shifts from 510 to 680 nm with the increase of gold coverage. At the excitation of 532 and 785 nm, the best enhancements about 2.0 × 105and 1.1 × 107are obtained on spheres with ∼60 and 83 % gold coverage, respectively. The weak polarization-dependent SERS indicates that the enhancement is from the multi-gaps on single noncontinuous shell. This optical tunable and SERS active noncontinuous gold shell can be applied in biosensing, ultra trace detection, and molecule analysis needing multi-wavelengths excitation.
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DOI:
10.1007/978-1-4613-0985-7_6
发表时间:
1988
期刊:
--
影响因子:
--
作者:
R. Birke;J. Lombardi
通讯作者:
R. Birke;J. Lombardi
影响因子:
3
作者:
Winkler, Katarzyna;Kaminska, Agnieszka;Wojciechowski, Tomasz;Holyst, Robert;Fialkowski, Marcin
通讯作者:
Fialkowski, Marcin
影响因子:
64.8
作者:
J. F. Li;Yi Fan Huang;Yong Ding;Zhi-Lin Yang;S. Li;Xiao Shun Zhou;F. Fan;Wei Zhang;Z. Zho
通讯作者:
J. F. Li;Yi Fan Huang;Yong Ding;Zhi-Lin Yang;S. Li;Xiao Shun Zhou;F. Fan;Wei Zhang;Z. Zho
DOI:
10.1007/s00340-009-3535-7
发表时间:
2009-05
期刊:
Applied Physics B
影响因子:
--
作者:
Dajian Wu;Dajian Wu;Ying Cheng;Xiaojun Liu
通讯作者:
Dajian Wu;Dajian Wu;Ying Cheng;Xiaojun Liu
影响因子:
2.4
作者:
Xu, HX;Aizpurua, J;Apell, P
通讯作者:
Apell, P