The 68th JSAP Spring Meeting 2021

Presentation information

Oral presentation

3 Optics and Photonics » 3.12 Nanoscale optical science and near-field optics

[19a-Z08-1~11] 3.12 Nanoscale optical science and near-field optics

Fri. Mar 19, 2021 9:00 AM - 12:00 PM Z08 (Z08)

Toshihiro Okamoto(Tokushima Univ.), Yoshiaki Kanamori(Tohoku Univ.)

9:00 AM - 9:15 AM

[19a-Z08-1] Casimir-Lifshitz Force Dominated Minimum Spacing of Single Crystal Silicon Cleavage Plane Nanogap

〇(D)Masaki Shimofuri1, Yoshikazu Hirai1, Toshiyuki Tsuchiya1 (1.Kyoto Univ.)

Keywords:Casimir-Lifshitz force, nanogap, MEMS

It was difficult to fabricate and sustain the plate-plate nanogap with a gap of few to tens nm which has a large facing area and uniform spacing. In this study, a single crystal silicon beam was cleaved by MEMS to fabricate a nanogap with large-area smooth surface, and the phenomenon that the minimum spacing was limited by the Casimir-Lifshitz force was observed and evaluated by measuring the pull-in characteristic of the gap. In the experiment, pull-in occurred at a gap of 10-15 nm, which was in good agreement with the numerical calculation.