External control of surface plasmons on strong-correlated electronic materials

2015 Fiscal Year Final Research Report

• Project/Area Number: 25600073
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Applied materials
• Research Institution: The University of Tokyo
• Principal Investigator: Matsui Hiroaki 東京大学, 工学(系)研究科(研究院), 講師 (80397752)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 機能性酸化物 / VO2 / 表面プラズモン / 相転移 / ナノ構造 / メモリー効果

Outline of Final Research Achievements

In this work, we carried out external control of surface plasmon resonance (SPRs) based on functional oxide (VO2) with a metal-insulator transition. In particular, we focused on SPR responses from the two-dimensional VO2 nanodot arrays fabricated using a top-down technique based on nanoimprint lithography. As a result, we demonstrated SPR properties of the VO2 nanodot arrays in the infrared range from the experimental and theoretical viewpoints, which were attributed to strong electron-electron interactions in the conduction band of VO2. Finally, we sufficiently showed the possibilities of external control of surface plasmons of the VO2 nanodot arrays from the temperature-dependent plasmonic responses.

Free Research Field

酸化物材料科学