[22p-A501-1~16] 6.5 Surface Physics, Vacuum

1:00 PM - 1:15 PM JST(4:00 AM - 4:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[22p-A501-1] Observation of nano-amorphous layers on solid surfaces by nonlinear vibrational spectroscopy

〇(M2)RYU YOSHIZAWA^1,2, ATSUNORI SAKURAI^1,2,3, TOSHIKI SUGIMOTO^1,2,3 (1.SOKENDAI, 2.IMS, 3.RIKENHARIMA)

Keywords:

nonlinear spectroscopy,amorphous,solid surface

In this study, a new highly sensitive and surface-sensitive nonlinear vibrational spectroscopy method was developed and applied to the measurement of nano-amorphous layers on solid surfaces. As a result, we succeeded in observing nanometer-order surface amorphous layers, including amorphous SiO₂ layers formed on Si surfaces by thermal oxidation, which are difficult to detect using existing methods. This technique also enables us to measure the distribution of the ring structure involved in the chemical activity of amorphous SiO₂, and we aim to correlate the structure of the nano-amorphous layer with its physical properties.