A sensitive and selective terahertz sensor for the fingerprint detection of lactose

doi:10.1016/j.talanta.2018.09.029

	A sensitive and selective terahertz sensor for the fingerprint detection of lactose
	Han, Baojuan 1; Han, Zhanghua 2; Qin, Jianyuan 1; Wang, Yongmei 3; Zhao, Zongshan 3
刊名	TALANTA
	2019-01-15
卷号	192 页码:1-5
关键词	Split-ring resonators Terahertz Lactose Detection
ISSN号	0039-9140
DOI	10.1016/j.talanta.2018.09.029
英文摘要	Special recognition to molecules is essential for many biochemical processes, thus highly sensitive sensing methods for molecule recognition are strongly demanded. Recently, metamaterials present a unique platform for sensing applications owing to their exotic properties. In the current work, a metamaterial sensor for enhanced fingerprint detection of lactose based on resonant coupling of plasmonic modes of split-ring resonators (SRRs) and terahertz characteristic modes of lactose was theoretically and experimentally demonstrated. Large electric field enhancement (about 120 times) at the gap of SRRs allows for the highly sensitive detection. A narrow transmittance peak in the broader transmittance dip which corresponded to the characteristic modes of lactose was observed due to the resonant coupling, and the differential transmittance enhanced as the lactose concentration increased. The experimental result agreed well with the theoretical analysis. Moreover, the selectivity of this SRRs sensor for the target molecule was also verified by using fructose. A low amount of lactose, as small as 20 mg/mL was successfully detected in the experiment. Our study opens a new avenue to exploit new materials or devices for molecule sensing with high sensitivity and selectivity.
资助项目	National Natural Science Foundation of China[61705213]
WOS关键词	INDUCED TRANSPARENCY ; METAMATERIALS ; MEDIA
WOS研究方向	Chemistry
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000449443900001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/11001]
专题	中国科学院青岛生物能源与过程研究所
通讯作者	Qin, Jianyuan
作者单位	1.China Jiliang Univ, Lab Terahertz Photon, Hangzhou 310018, Peoples R China 2.Nanjing Univ Sci & Technol, Adv Launching Coinnovat Ctr, Nanjing 210094, Jiangsu, Peoples R China 3.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China
推荐引用方式 GB/T 7714	Han, Baojuan,Han, Zhanghua,Qin, Jianyuan,et al. A sensitive and selective terahertz sensor for the fingerprint detection of lactose[J]. TALANTA,2019,192:1-5.
APA	Han, Baojuan,Han, Zhanghua,Qin, Jianyuan,Wang, Yongmei,&Zhao, Zongshan.(2019).A sensitive and selective terahertz sensor for the fingerprint detection of lactose.TALANTA,192,1-5.
MLA	Han, Baojuan,et al."A sensitive and selective terahertz sensor for the fingerprint detection of lactose".TALANTA 192(2019):1-5.