【摘 要】
：
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 prepari
【机 构】
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InstituteofMicroelectronicsofChineseAcademyofSciences,Beijing100029,P.R.ChinaUniversityofChineseAcad
【出 处】
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JournalofInnovativeOpticalHealthSciences
论文部分内容阅读
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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