P1OS.8 - Fabrication and SERS property of Ag-coated hierarchical polyvinylpyrrolidone fibers
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
- P-1 - Optical Sensors
- X. He, X. Fan, J. Li, X. Gao, J. Jia, Z. Qi - State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, Beijing (China)
- 631 - 632
A new and facile strategy to fabricate Ag-coated hierarchical polyvinylpyrrolidone (PVP) fibers as a Surface-enhanced Raman scattering (SERS) substrate has been successfully developed. The fabrication process includes PVP fibers electrospinning, oxygen plasma treatment and Ag film sputtering. The effect of plasma treatment and sputtering on the morphology and the SERS activity were investigated. Because of high specific surface area and the nanoscale gaps, the SERS activity of the hierarchical fibers substrate is 16 times more than that of the raw ones. The SERS signal can still be observed with Nile Blue (NB) molecules concentration of 10-10 M. The SERS substrate with Agcoated hierarchical PVP fibers has enhanced sensitivity and good uniformity and shows a promising potential for practical application.