表面科学
Online ISSN : 1881-4743
Print ISSN : 0388-5321
ISSN-L : 0388-5321
特集:有機・バイオナノテクノロジー
生命体の微細構造と熱物性の制御
宮崎 康次
著者情報
ジャーナル フリー

2006 年 27 巻 2 号 p. 86-89

詳細
抄録

We control thermal properties such as thermal radiative properties and thermal conductivity by using bio-inspired nano-structures. It is well known that the colors of Morpho butterfly wings are due to interactions between light waves and periodic structures of sub-micron scale. By incorporating micron periodic structures into other materials, we can control thermal radiative properties. The micro structures are fabricated on a 4-inch silicon wafer by using self-assembly of the colloidal silica particles under the specific condition. The reflectivity of the fabricated samples is determined by using a FT-IR (Fourier Transform-Infrared Spectroscopy). The spectral reflectivity is enhanced at a specific wavenumber. An analogous interaction between waves and nano-structures can be used to control the thermal conductivity of semiconductors and insulators. Nano-structures can reduce the conductivity by impeding the lattice vibrations that carry heat. We conducted phonon transport numerical analysis to study the reduction of thermal conductivity. The results of the numerical analysis show that the thermal conductivity can be reduced to less than 10% of the bulk value by using nano-structures.

著者関連情報

この記事はクリエイティブ・コモンズ [表示 - 非営利 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by-nc/4.0/deed.ja
前の記事 次の記事
feedback
Top