2025-06-12 東京大学
熱分解炭素被膜でコートされたモスアイ構造の様子
＜関連情報＞
- https://www.s.u-tokyo.ac.jp/ja/press/10826/
- https://advanced.onlinelibrary.wiley.com/doi/10.1002/adom.202500948
炭素コーティングされたモスアイ構造：超広帯域THz-DUVのほぼ完璧な吸収体 Carbon-Coated Moth-Eye Structure: An Ultrabroadband THz-DUV Near-Perfect Absorber
Yuki Hakamada, Maria Cojocari, Mizuho Matoba, Shotaro Kawano, Haruyuki Sakurai, Kuniaki Konishi, Daniil Pashnev, Surya Revanth Ayyagari, Vytautas Janonis, Andrzej Urbanowicz …
Advanced Optical Materials Published: 12 June 2025
DOI:https://doi.org/10.1002/adom.202500948
Abstract
A nearly perfect absorber across an ultrabroad frequency range from 1 to 1200 THz is reported that combines a silicon moth-eye structure with a thin layer of pyrolytic carbon (PyC). The moth-eye design provides a perfect impedance match with air via gradual change of the refractive index at low frequencies and simultaneously serves as a multiple scatterer at high frequencies while coating the moth-eye structure with PyC enables ultrabroad band absorption. The combination of the strong absorption in the PyC conductive film and moth-eye surface allows to create a material capable of absorbing over 98% incident radiation across the entire THz–deep ultraviolet (DUV) frequency range. This makes this moth-eye/PyC structure a promising material for a wide range of applications including energy harvesting, electromagnetic shielding, and the development of an ideal blackbody radiation source.
