A biomimicry design for nanoscale radiative cooling applications inspired by Morpho didius butterfly

Name: A biomimicry design for nanoscale radiative cooling applications inspired by Morpho didius butterfly
Author: Didari, Azadeh, Mengüç, Mustafa Pınar

İsim	A biomimicry design for nanoscale radiative cooling applications inspired by Morpho didius butterfly
Yazar	Didari, Azadeh, Mengüç, Mustafa Pınar
Basım Tarihi:	2018-11-15
Basım Yeri	- Nature Publishing Group
Konu	Selective surfaces, Photonic crystals, Perfect absorber, Wing scales, Absorption, Films, Field, Plasmons
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	2045-2322
Kayıt Numarası	ef5c50e5-eec0-441a-a7ad-97e175912085
Lokasyon	Mechanical Engineering
Tarih	2018-11-15
Notlar	TÜBİTAK ; Ozyegin University
Örnek Metin	In nature, novel colors and patterns have evolved in various species for survival, recognizability or mating purposes. Investigations of the morphology of various butterfly wings have shown that in addition to the pigmentation, micro and nanostructures within the wings have also allowed better communication systems and the pheromone-producing organs which are the main regulators of the temperature within butterfly wings. Within the blue spectrum (450–495 nm), Morpho didius butterfly exhibit iridescence in their structure-based wings’ color. Inspired by the rich physics behind this concept, we present a designer metamaterial system that has the potential to be used for near-field radiative cooling applications. This biomimicry design involves SiC palm tree-like structures placed in close proximity of a thin film in a vacuum environment separated by nanoscale gaps. The near-field energy exchange is enhanced significantly by decreasing the dimensions of the tree and rotating the free-standing structure by 90 degrees clockwise and bringing it to the close proximity of a second thin film. This exchange is calculated by using newly developed near-field radiative transfer finite difference time domain (NF-RT-FDTD) algorithm. Several orders of enhancement of near-field heat flux within the infrared atmospheric window (8–13 μm bandwidth) are achieved. This spectrally selective enhancement is associated with the geometric variations, the spatial location of the source of excitation and the material characteristics, and can be tuned to tailor strong radiative cooling mechanisms.
DOI	10.1038/s41598-018-35082-3
Cilt	8

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A biomimicry design for nanoscale radiative cooling applications inspired by Morpho didius butterfly

Yazar Didari, Azadeh, Mengüç, Mustafa Pınar

Basım Tarihi 2018-11-15

Basım Yeri - Nature Publishing Group

Konu Selective surfaces, Photonic crystals, Perfect absorber, Wing scales, Absorption, Films, Field, Plasmons

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 2045-2322

Kayıt Numarası ef5c50e5-eec0-441a-a7ad-97e175912085

Lokasyon Mechanical Engineering

Tarih 2018-11-15

Notlar TÜBİTAK ; Ozyegin University

Örnek Metin In nature, novel colors and patterns have evolved in various species for survival, recognizability or mating purposes. Investigations of the morphology of various butterfly wings have shown that in addition to the pigmentation, micro and nanostructures within the wings have also allowed better communication systems and the pheromone-producing organs which are the main regulators of the temperature within butterfly wings. Within the blue spectrum (450–495 nm), Morpho didius butterfly exhibit iridescence in their structure-based wings’ color. Inspired by the rich physics behind this concept, we present a designer metamaterial system that has the potential to be used for near-field radiative cooling applications. This biomimicry design involves SiC palm tree-like structures placed in close proximity of a thin film in a vacuum environment separated by nanoscale gaps. The near-field energy exchange is enhanced significantly by decreasing the dimensions of the tree and rotating the free-standing structure by 90 degrees clockwise and bringing it to the close proximity of a second thin film. This exchange is calculated by using newly developed near-field radiative transfer finite difference time domain (NF-RT-FDTD) algorithm. Several orders of enhancement of near-field heat flux within the infrared atmospheric window (8–13 μm bandwidth) are achieved. This spectrally selective enhancement is associated with the geometric variations, the spatial location of the source of excitation and the material characteristics, and can be tuned to tailor strong radiative cooling mechanisms.

DOI 10.1038/s41598-018-35082-3

Cilt 8