[17a-A34-1~9] 4.1 Plasmonics and Nanophotonics

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)English Presentation

[17a-A34-6] Bessel Beam-Instigated Two-Fold SERS Enhancement in AuNP Structures Compare to Drop Casting

〇(D)Riya Choudhary¹, Kaushal Vairagi², Samir K. Mondal², Sachin K. Srivastava^1,3 (1.Dept. of Physics, IIT Roorkee, 2.micro-NOC, CSIR-CSIO, 3.CPQCT, IIT Roorkee)

Keywords:

Bessel beam illumination,Surface enhanced Raman scattering,AuNP structures

In this study, we have shown the surface enhanced Raman scattering (SERS) on Si/Ag/AuNPs and coverslip/AuNPs substrates for 4-aminothiophenol (4-ATP) and rhodamine-6G (R6G) molecule respectively. We have fabricated SERS substrates by arranging the gold nanoparticles (AuNPs) with Bessel beam illumination and without illumination of light. We found two-fold enhancement in Raman signal of 4-ATP and R6G with Bessel beam illumination in comparison to drop casting method.