• Journal of Innovative Optical Health Sciences
  • Vol. 14, Issue 4, 2141005 (2021)
Yang Liu1、2, Xin Li1、2, Jie Cheng1、2, Na Zhou1、2, Lingqian Zhang1, Haiyang Mao1、2、3、*, and Chengjun Huang1、2
Author Affiliations
  • 1Institute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, P. R. China
  • 2University of Chinese Academy of Sciences Beijing 100049, P. R. China
  • 3Wuxi Internet of Things Innovation Center Co. Ltd. Advanced Sensing Department, Wuxi 214001, P. R. China
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    Abstract

    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.
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    Yang Liu, Xin Li, Jie Cheng, Na Zhou, Lingqian Zhang, Haiyang Mao, Chengjun Huang. SERS devices with "hedgehog-like" nanosphere arrays for detection of trace pesticides[J]. Journal of Innovative Optical Health Sciences, 2021, 14(4): 2141005
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    Received: Apr. 26, 2021
    Accepted: May. 19, 2021
    Published Online: Aug. 23, 2021
    The Author Email: Mao Haiyang (maohaiyang@ime.ac.cn)