Beilstein Arch. 2019, 201989. https://doi.org/10.3762/bxiv.2019.89.v1
Published 20 Aug 2019
Nanostructures and nanoparticles are two typical structures which have already been widely employed as the Surface Enhanced Raman Scattering (SERS) substrates. In most studies, they are employed separately as SERS substrates. Recently, the hierarchical structures including nanostructures and nanoparticles present better SERS characteristics. However, how to machine such hierarchical structures is a big problem. In the present study, a novel method integrating the nanoindentation process and chemical redox reaction to machine the hierarchical SERS substrate is provided. Micro/nanostructures are formed on the Cu(110) plane first, and then Ag nanoparticles are generated on the structured Copper surface. Effects of parameters of the indentation process and the corrosion times in the AgNO3 solutions on the Raman intensities of the SERS substrate with hierarchical structures are experimentally studied. The intensity and distribution of the electric field of single and multi Ag nanoparticles on the surface of plane and micro/nanostructures are studied with the COMSOL software. The feasibility of the hierarchical SERS substrate is verified using R6G molecules. Finally, the enhancement factor of malachite green molecules can reach to 5.089×109, which proves that the method is simple, replicable and low cost method for machining the hierarchical SERS substrate.
Keywords: Ag nanoparticles, nanostructures, R6G, malachite green molecules, SERS, hierarchical substrates
|Format: DOC||Size: 4.1 MB||Download|
When a peer-reviewed version of this preprint is available, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:
Zhang, J.; Jia, T.; Yan, Y.; Wang, L.; Miao, P.; Han, Y.; Zhang, X.; Shi, G.; Geng, Y.; Weng, Z.; Laipple, D.; Wang, Z. Beilstein Arch. 2019, 201989. doi:10.3762/bxiv.2019.89.v1
Citation data can be downloaded as file using the "Download" button or used for copy/paste from the text window below.
Citation data in RIS format can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Zotero.
© 2019 Zhang et al.; licensee Beilstein-Institut.
This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the authors and source are credited.
The license is subject to the Beilstein Archives terms and conditions: (https://www.beilstein-archives.org/xiv/terms)