Abstract
A tapered fiber decorated by Ag nanoparticles is prepared as a surface-enhanced Raman scattering (SERS) substrate. There are two key parameters during the preparation process, the fiber cone angle and the density of decorated AgNPs on the fiber tip surface. Their theoretical analysis on the forming mechanism and the optimization process is studied in detail. The tapered fibers with angles from 0.5 to 30° are successfully prepared, with a chemical method in a small tube using a bending interface. AgNPs with different densities are decorated on the surface of the tapered fibers with an electrostatic adsorption method. The optimized tapered fiber SERS probe with an angle of 12° and AgNPs density of 26.67% provides the detection of Rhodamine 6G (R6G) with 10−10 mol/L.
Highlights
Raman spectroscopy is a vibrational spectroscopy technology that can provide molecular fingerprint information for chemical identification
With the progress of corrosion process, the diameter of the optical fiber decreased gradually due to the function of HF
The decrease of the diameter caused the height of the meniscus to decrease to h2
Summary
Raman spectroscopy is a vibrational spectroscopy technology that can provide molecular fingerprint information for chemical identification. The currently applicable structures include rough metal electrodes [10,11,12,13,14], polymerized thin films [15], metal islands with different morphologies [16,17,18], etc. When it comes to flexible detection, in situ monitoring or remote sensing in confined places, the above structures will no longer be suitable. 2. Preparation of the Tapered Fiber SERS (Surface-Eenhanced Raman Scattering) Probe
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
