Ordered gold-coated glass nano-sting array with large density tips as highly SERS-active chips for detection of trace organophosphorous toxicant

doi:10.1088/1361-6528/ab9eda

	Ordered gold-coated glass nano-sting array with large density tips as highly SERS-active chips for detection of trace organophosphorous toxicant
	Zhao, Qian; Liu, Guangqiang; Zhang, Hongwen; Cai, Weiping
刊名	NANOTECHNOLOGY
	2020-10-09
卷号	31
关键词	gold-coated glass nano-sting arrays high density nano-tips colloidal template reactive ion etching high performance sers chips ultrasensitive detection of toxic organophosphorus molecules
ISSN号	0957-4484
DOI	10.1088/1361-6528/ab9eda
通讯作者	Cai, Weiping(wpcai@issp.ac.cn)
英文摘要	A simple and cost-effective route to fabricating gold-coated glass nano-stings' arrays is presented for highly efficient surface enhanced Raman spectroscopy (SERS) chips via reactive ion etching of the glass slide covered with polystyrene (PS) colloidal monolayer and sputtering deposition of gold on it. The as-fabricated SERS chips consist of the nearly-hemispherical particles with submicron-size, which are hexagonally arranged into the ordered arrays. There are many short and long Au-coated glass nano-stings standing vertically on the hemispherical particles, showing high density tips (up to 7.0 x 10(3)mu m(-2)). The formation of such gold-coated glass hierarchically structured array is attributed to the geometry of PS colloidal monolayer and the nanoscale roughness of glass slide's surface. Further, it has been demonstrated that such gold-coated glass array chip is highly SERS-active and can be utilized to detect trace organophosphorous toxicant with the limit below ppt level and good reproducibility in measurements. The intensity of the Raman peak shows the linear relation, in logarithmic scale, with the organophosphorous concentration from ppt to ppm level, exhibiting the possibility of quantitative detection in a large concentration range. This work has demonstrated the cost-effective method to fabricate the high performance SERS chips for trace detection of toxic molecules.
资助项目	National Key Research and Development Program of China[2017YFA0207101] ; National Natural Science Foundation of China[51801204] ; National Natural Science Foundation of China[51531006] ; National Natural Science Foundation of China[11974352] ; National Natural Science Foundation of China[51771182] ; CAS/SAF International Partner-ship Program for Creative Research Teams
WOS关键词	RAMAN-SPECTROSCOPY ; SILVER ; FABRICATION ; NANOPARTICLES ; PATTERNS
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000553444900001
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; CAS/SAF International Partner-ship Program for Creative Research Teams
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/102923]
专题	中国科学院合肥物质科学研究院
通讯作者	Cai, Weiping
作者单位	Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Qian,Liu, Guangqiang,Zhang, Hongwen,et al. Ordered gold-coated glass nano-sting array with large density tips as highly SERS-active chips for detection of trace organophosphorous toxicant[J]. NANOTECHNOLOGY,2020,31.
APA	Zhao, Qian,Liu, Guangqiang,Zhang, Hongwen,&Cai, Weiping.(2020).Ordered gold-coated glass nano-sting array with large density tips as highly SERS-active chips for detection of trace organophosphorous toxicant.NANOTECHNOLOGY,31.
MLA	Zhao, Qian,et al."Ordered gold-coated glass nano-sting array with large density tips as highly SERS-active chips for detection of trace organophosphorous toxicant".NANOTECHNOLOGY 31(2020).