DataVXSmall StructuresPaper
journal article·2026-03Open access

Focused Thermal Emission From a Radiative Metasurface

Tsuyoshi Kawaida, Kazuki Wada, Kazuma Sekiya, Megumi Tanaka, Thoko Ogata, Yasutaka Matsuo, Saulius Juodkazis, Yoshiaki Nishijima

Small Structures· Volume 7· Issue 3
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Source abstract

Abstract

In the field of mid‐infrared (m‐IR) applications, a need exists to control thermal radiation from metal‐insulator‐metal (MIM) metasurfaces without any additional optical components. Here, we introduce the metalens concept for radiation control from MIM metasurfaces. A finite‐difference time‐domain (FDTD) simulation is used to design the radiative metasurface to focus its thermal radiation. Electron‐beam lithography is implemented to fabricate a 5‐mm‐diameter radiative metalens. Experiments to measure the thermal radiation from metasurfaces validate the focusing performance of the metalens by direct measurement of the 3D spatial distribution of thermal radiation. These findings form the basis for engineering metasurfaces for focusing thermal radiation and can be applied in areas such as gas sensor design, semiconductor device cooling, and energy harvesting.
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Research context

Electronic materials

OpenAlex topics: Thermal Radiation and Cooling Technologies · Metamaterials and Metasurfaces Applications · Acoustic Wave Phenomena Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Electrical and Computer Engineering Graduate School of Engineering Yokohama National University Yokohama Kanagawa Japan

Research Institute for Electronic Science Hokkaido University Sapporo Hokkaido Japan

Optical Sciences Centre Swinburne University of Technology Hawthorn Victoria Australia

Institute of Advanced Sciences Yokohama National University Yokohama Kanagawa Japan

Laser Research Centre Physics Faculty Vilnius University Vilnius Lithuania

Institute for Multidisciplinary Sciences Yokohama National University Yokohama Kanagawa Japan

PRESTO JST Japan

Funding

Japan Science and Technology Agency · Ministry of Education, Culture, Sports, Science and Technology

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