Abstract

Electrically modulated surface enhanced Raman scattering (E-SERS) can be able to regulate the plasmon resonance peak of metal nanostructures, further improve the detection sensitivity of the SERS substrate. However, the E-SERS substrates require auxiliary equipment to provide the electrical potential, and most of them are non-flexible structure, which limits the application of E-SERS in the portable, in-situ and fast detection area. Here, we developed an electric field-modulated SERS substrate based on the piezoelectric effect by combining the PVDF (piezoelectric-modulated layer) and Ag nanowires (AgNWs) (SERS active layer) and investigated the SERS activity in experiment and theory. The enhanced electric field and the tunable plasmon resonance induced by the piezoelectric effect provide the additional enhancement for the SERS signal. Furthermore, we fabricated a SERS active ring with a piezoelectric field-modulated substrate and achieved the in-situ detection of glucose with a non-invasive method. This work provided innovation for the E-SERS and could greatly promote the development of the in-situ, wearable and intelligent sensors.

Details

Title
Electric Field-Modulated Surface Enhanced Raman Spectroscopy by PVDF/Ag Hybrid
Author
Lu Jiajun 1 ; Song Yuzhi 1 ; Fengcai, Lei 2 ; Du Xuejian 1 ; Huo Yanyan 1 ; Xu Shicai 3 ; Li, Chonghui 1 ; Tingyin, Ning 1 ; Yu, Jing 1 ; Zhang, Chao 1 

 Collaborative Innovation Center of Light Manipulations and Applications & Institute of Materials and Clean Energy, School of Physics and Electronics, Shandong Normal University, Jinan, P.R. China (GRID:grid.410585.d) 
 College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, P.R. China (GRID:grid.410585.d) 
 Shandong Key Laboratory of Biophysics, College of Physics and Electronic Information, Institute of Biophysics, Dezhou University, Dezhou, China (GRID:grid.440709.e) (ISNI:0000 0000 9870 9448) 
Publication year
2020
Publication date
2020
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2382600104
Copyright
This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.