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

doi:10.1016/j.talanta.2018.09.029

QIBEBT-IR

	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
	2019-01-15
发表期刊	TALANTA
ISSN	0039-9140
卷号	192 页码:1-5
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.
关键词	Split-ring resonators Terahertz Lactose Detection
DOI	10.1016/j.talanta.2018.09.029
关键词[WOS]	INDUCED TRANSPARENCY ; METAMATERIALS ; MEDIA
语种	英语
资助项目	National Natural Science Foundation of China[61705213]
WOS研究方向	Chemistry
项目资助者	National Natural Science Foundation of China
WOS类目	Chemistry, Analytical
WOS记录号	WOS:000449443900001
出版者	ELSEVIER SCIENCE BV
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/11002
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.