Energy conversion using spectral controlled near-field radiation by Plasmon resonance along nano-scaled periodical structured surfaces

2014 Fiscal Year Final Research Report

• Project/Area Number: 24246037
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Thermal engineering
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: HANAMURA Katsunori 東京工業大学, 理工学研究科, 教授 (20172950)
• Co-Investigator(Kenkyū-buntansha): MAKINO Toshiro 京都大学, 工学(系)研究科, 教授 (30111941) ; MIYAZAKI Koji 九州工業大学, 工学(系)研究科(研究院), 教授 (70315159) ; TAKAHARA Junichi 大阪大学, 工学(系)研究科, 教授 (90273606) ; MORIMOTO Kenichi 東京大学, 工学(系)研究科, 講師 (90435777) ; WAKABAYASHI Hidenobu 京都大学, 工学(系)研究科, 助教 (00273467)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 近接場光 / 波長選択 / 表面プラズモン / プラズモン共鳴器 / エネルギー変換

Outline of Final Research Achievements

In this study, spectral control of near-field radiation transfer was investigated through numerical simulation for pillar array structured surfaces with a low aspect ratio channel. The near-field radiation transfer was enhanced by interference of Surface Plasmon Polaritons, in which a short distance and a long distance propagating modes contributed to peak radiation fluxes at different frequencies in a range of near infrared ray. The peak radiation flux increased by a factor of three compared with the smooth surfaces. Moreover, near-field radiation transfer for s-polarized wave with a low frequency was suppressed compared with that with a high frequency by using the pillar array structured surface. In addition, a split ring resonator array surface manufactured could convert electricity into visible light with conversion efficiency of 20% that was two times higher than the conventional tungsten filament lighting fixture.

Free Research Field

熱工学