Xufei Liu, Dan'ao Han, Hui Guo, Yonglai Zhang. Surface Enhanced Raman Scattering Substrates Based on Femtosecond Laser Structured Polytetrafluoroethylene[J]. Laser & Optoelectronics Progress, 2021, 58(23): 2314011
- Laser & Optoelectronics Progress
- Vol. 58, Issue 23, 2314011 (2021)
Fig. 1. Laser preparation of surface enhanced Raman substrate. (a) Illustration of sample processing; (b) laser processing route
Fig. 2. Confocal laser scanning microscopy images. (a) Surface of material; (b)(c) height profile of surface of material; (d) 3D topography
Fig. 3. Confocal laser scanning microscopy images. (a) Surface of material; (b)(c) height profile of surface of material; (d) 3D topography
Fig. 4. Scanning electron microscope images. (a) Surface of L-PTFE-1-Ag; (b) surface of L-PTFE-2-Ag; (c) enlarged image of L-PTFE-2-Ag
Fig. 5. Contact angle data
Fig. 6. Raman signal enhancement effect. (a) Raman signal enhancement effect of one-dimensional and two-dimensional grating structure; effects of (b) period, (c) power, and (d) scanning speed on SERS performance
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