[8p-C212-1~16] 3.1 Basic optics and frontier of optics

5:45 PM - 6:00 PM JST(8:45 AM - 9:00 AM UTC)

[8p-C212-14] Investigation of Cr₂N as a thermoplasmonic material

〇Kenji Setoura¹, Tomoya Oshikiri², Mamoru Tamura^3,4, Takuya Iida^5,4, Yasutaka Matsuo⁶ (1.Univ. Hyogo, 2.Tohoku Univ., 3.Kwansei Gakuin Univ., 4.OMU (RILACS), 5.OMU (Sch. Sci.), 6.Hokkaido Univ.)

Keywords:

thermoplasmonics,plasmonic heating,transition metal nitride

In thermoplasmonics, controlling surface temperature patterns in nanostructures has been difficult because of the high thermal conductivity of noble metals. In this study, we focus on hexagonal chromium nitride (Cr₂N), a plasmonic material with low thermal conductivity, and compare its dielectric function with those of Au and TiN. The results indicate that Cr₂N is a promising material for nanoscale temperature control. We also report polarization-dependent switching of surface temperature patterns in U-shaped Cr₂N nanostructures.