Hierarchical optical antenna: Gold nanoparticle-modified photonic crystal for highly-sensitive label-free DNA detection

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	Hierarchical optical antenna: Gold nanoparticle-modified photonic crystal for highly-sensitive label-free DNA detection
	Shen, WZ ; Li, MZ ; Wang, BL ; Liu, J ; Li, ZY ; Jiang, L ; Song, YL
刊名	JOURNAL OF MATERIALS CHEMISTRY
	2012
卷号	22 期号:16 页码:8127
关键词	SURFACE-PLASMON RESONANCE MOLECULAR BEACON BIOSENSORS COLORIMETRIC DETECTION ENHANCED FLUORESCENCE SPONTANEOUS EMISSION SLOW PHOTONS SPECTROSCOPY OPAL OLIGONUCLEOTIDES NANOWIRES
ISSN号	0959-9428
通讯作者	Li, MZ: Chinese Acad Sci, Inst Chem, New Mat Lab, Key Lab Organ Solids,BNLMS, Beijing 100190, Peoples R China.
中文摘要	Metallic nanoparticles combined with 3D photonic crystals (PC) are anticipated to achieve high light-use efficiency, which stimulates their promising applications as optical antenna. Here, we propose a hierarchical optical antenna from an inverse opal photonic crystal modified with gold nanoparticles (GNPs) and exploit it for highly-sensitive bio-sensing. Metallic nanostructures can induce efficient light-harvesting and boost the light-matter interaction through localized surface plasmon resonance (LSPR). Photonic crystals are also efficient optical antennas with the ability to manipulate incident light. The 3D photonic crystal can localize the excitation energy and induce intense LSPR of GNPs for fluorescent enhancement when the PC band edge agrees with the LSPR absorption wavelength of the GNPs and the excitation wavelength of the light source. The feasibility of our approach is demonstrated by label-free DNA detection of SARS and HIV, and the GNP-modified inverse opal gives rise to one magnitude enhancement of the signal intensity and the detection sensitivity. This hierarchical antenna is an interesting prospect for highly effective light harvesting through the optimized combination of the superior properties of photonic crystals and plasmonic materials.
收录类别	SCI
资助信息	National Nature Science Foundation [21003132, 21073203, 21004068, 91127038, 51103004, 51173190]; 973 Program [2007CB936403, 2009CB930404, 2011CB932303, 2011CB808400]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/39159]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Shen, WZ,Li, MZ,Wang, BL,et al. Hierarchical optical antenna: Gold nanoparticle-modified photonic crystal for highly-sensitive label-free DNA detection[J]. JOURNAL OF MATERIALS CHEMISTRY,2012,22(16):8127.
APA	Shen, WZ.,Li, MZ.,Wang, BL.,Liu, J.,Li, ZY.,...&Song, YL.(2012).Hierarchical optical antenna: Gold nanoparticle-modified photonic crystal for highly-sensitive label-free DNA detection.JOURNAL OF MATERIALS CHEMISTRY,22(16),8127.
MLA	Shen, WZ,et al."Hierarchical optical antenna: Gold nanoparticle-modified photonic crystal for highly-sensitive label-free DNA detection".JOURNAL OF MATERIALS CHEMISTRY 22.16(2012):8127.