SERS devices with 'hedgehog-like' nanosphere arrays for detection of trace pesticides

Autor: Yang Liu, Xin Li, Jie Cheng, Na Zhou, Lingqian Zhang, Haiyang Mao, Chengjun Huang
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Journal of Innovative Optical Health Sciences, Vol 14, Iss 4, Pp 2141005-1-2141005-10 (2021)
Druh dokumentu: article
ISSN: 1793-5458
1793-7205
17935458
DOI: 10.1142/S1793545821410054
Popis: The development of surface-enhanced Raman scattering (SERS) devices for detection of trace pesticides has attracted more and more attention. In this work, a large-area self-assembly approach assisted with reactive ion etching (RIE) is proposed for preparing SERS devices consisting of Ag-covered “hedgehog-like” nanosphere arrays (Ag/HLNAs). Such a SERS device has an enhancement factor of 2.79×107, a limit of detection (LOD) up to 10−12M for Rhodamine 6G (R6G) analytes, and a relative standard deviation (RSD) smaller than 10%, demonstrating high uniformity. Besides, for pesticide detections, the device achieves an LOD of 10−8M for thiram molecules. It indicates that the proposed SERS device has a promising opportunity in detecting toxic organic pesticides.
Databáze: Directory of Open Access Journals