[16p-K101-1~9] Is it feasible to develop high-quality sensors utilizing ultrathin materials? ~Current status and challenges in molecular sensors based on nanotubes and two-dimensional materials~

2:50 PM - 3:05 PM JST(5:50 AM - 6:05 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16p-K101-5] Effect of Hydrogen Annealing on Surface-Enhanced Raman Scattering in Graphene

〇(M2)Yanjun Heng¹, Yugo Tagawa¹, Chao Tang², Hirokazu Fukidome², Akira Satou², Taiichi Otsuji², Takashi Uchino¹ (1.Tohoku Inst. Tech., 2.Tohoku Univ.)

Keywords:

graphene,SERS,biochemical sensor

We have previously reported on applying ELISA fabricated on graphene substrates as a biosensor utilizing surface-enhanced Raman scattering (SERS). In that study, we highlighted that two-dimensional materials such as graphene and h-BN are well-suited for biological applications due to their superior chemical stability against oxidation and other reactions and their excellent biocompatibility compared to conventional metal nanoparticle-based SERS substrates. However, a drawback of two-dimensional materials is their lower SERS enhancement factor, which leads to lower sensitivity. To address this issue, we found that hydrogen annealing of graphene SERS substrates at temperatures above 350 °C resulted in an improved sensitivity surpassing that of metal nanostructured SERS substrates. In more detail, this study investigates the hydrogen annealing effect on SERS in graphene.