Enhancement of near-field thermal radiative heat transfer by micro-nano structures

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630065
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Thermal engineering
• Research Institution: Nagaoka University of Technology
• Principal Investigator: YAMADA Noboru 長岡技術科学大学, 工学(系)研究科(研究院), 准教授 (90321976)
• Co-Investigator(Renkei-kenkyūsha): AKETAGAWA Masato 長岡技術科学大学, 大学院工学研究科, 教授 (10231854) ; TAKAHARA Junichi 大阪大学, 工学(系)研究科(研究院), 教授 (90273606)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: ふく射 / 近接場 / 熱輸送 / エネルギー変換

Outline of Final Research Achievements

Recently, the advanced control of thermal radiation by using micro-nano structures is of interest. A breakthrough technique is necessary to drastically enhance the radiative heat transfer because the radiative heat transfer flux is generally limited by Planck's law.
In this study, we focused on the combination of a metal micro-cavity structure with near-field effect. As a result of experiment, 30 times greater radiative heat flux was demonstrated between parallel plates with micro-scale gap. This is the first experimental demonstration of near-field thermal radiation with micro-nano structures.

Free Research Field

熱工学