[16p-K103-1~11] Frontiers of Optical Science and Innovative Photonics

3:25 PM - 3:50 PM JST(6:25 AM - 6:50 AM UTC)

[16p-K103-6] Isotope analysis using atomic-scale vibrational spectroscopy

〇Ryosuke Senga^1,2, Katsumi Hagita³, Tomohiro Miyata⁴, Hsiao-Fang Wang⁴, Koichi Mayumi⁵, Hiroshi Jinnai⁴, Kazu Suenaga² (1.AIST, 2.Osaka Univ., 3.NDA, 4.Tohoku Univ., 5.Tokyo Univ.)

Keywords:

EELS,Isotope,TEM

In this study, we have developed sub-nanoscale isotope detection using EELS for vibrational spectroscopy, which has been difficult to achieve with existing techniques. By selectively detecting high-angle scattered electrons, we were able to track the self-diffusion of carbon isotopes in graphene at the atomic level. We were also able to visualize deuterium-labeled organic molecules at the nanoscale, even in polymer samples with no crystalline structure.