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	Surface enhanced Raman scattering substrate with metallic nanogap array fabricated by etching the assembled polystyrene spheres array
	Xia, Liangping1,2; Yang, Zheng1,3; Yin, Shaoyun1; Guo, Wenrui2; Li, Shuhong3; Xie, Wanyi1; Huang, Deping1; Deng, Qiling1,2; Shi, Haofei1; Cui, Hongliang1
	2013-05-06
摘要	A sensitive surface enhanced Raman scattering (SERS) substrate with metallic nanogap array (MNGA) is fabricated by etching of an assembled polystyrene (PS) spheres array, followed by the coating of a metal film. The substrate is reproducible in fabrication and sensitive due to the nanogap coupling resonance (NGCR) enhancement. The NGCR is analyzed with the finite difference time domain (FDTD) method, and the relationship between the gap parameter and the field enhancement is obtained. Experimental measurements of R6G on demonstrate that the enhancement factor (EF) of the MNGA SERS substrate is increased by more than two fold compared with the control sample. (C) 2013 Optical Society of America
DOI	10.1364/OE.21.011349
发表期刊	OPTICS EXPRESS
ISSN	1094-4087
卷号	21期号:9页码:11349-11355
通讯作者	Xia, LP (reprint author), Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China.
收录类别	SCI
WOS记录号	WOS:000318906500123
语种	英语