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

doi:10.1039/c2jm16655k

CORC > 化学研究所 > 中国科学院化学研究所

	Hierarchical optical antenna: Gold nanoparticle-modified photonic crystal for highly-sensitive label-free DNA detection
	Shen, Weizhi 1; Li, Mingzhu 1; Wang, Benli 2; Liu, Jian 1; Li, Zhiyuan 2; Jiang, Lei 1; Song, Yanlin 1
刊名	JOURNAL OF MATERIALS CHEMISTRY
	2012
卷号	22 期号:16 页码:8127-8133
ISSN号	0959-9428
DOI	10.1039/c2jm16655k
英文摘要	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.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000302026100068
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/49635]
专题	中国科学院化学研究所
通讯作者	Li, Mingzhu
作者单位	1.Chinese Acad Sci, Inst Chem, New Mat Lab, Key Lab Organ Solids,BNLMS, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Phys, Lab Opt Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Shen, Weizhi,Li, Mingzhu,Wang, Benli,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):8127-8133.
APA	Shen, Weizhi.,Li, Mingzhu.,Wang, Benli.,Liu, Jian.,Li, Zhiyuan.,...&Song, Yanlin.(2012).Hierarchical optical antenna: Gold nanoparticle-modified photonic crystal for highly-sensitive label-free DNA detection.JOURNAL OF MATERIALS CHEMISTRY,22(16),8127-8133.
MLA	Shen, Weizhi,et al."Hierarchical optical antenna: Gold nanoparticle-modified photonic crystal for highly-sensitive label-free DNA detection".JOURNAL OF MATERIALS CHEMISTRY 22.16(2012):8127-8133.