Heat transfer properties of <i>Morpho</i> butterfly wings and the dependence of these properties on the wing surface structure

Kawabe, Mari; Maeda, Hirotaka; Kasuga, Toshihiro

doi:10.1039/c9ra09990e

Cited by 7 publications

(3 citation statements)

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“…37 In the present work, using this silica-coated honeycomb film as a template, we prepared Mg 2 Si honeycomb films via a Mg vapor annealing treatment. 31 The effect of the annealing temperature on the structural and chemical composition of the annealed samples is discussed, and we demonstrate the synthesis of highly porous Mg 2 Si via a simple UV−O 3 annealing treatment.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, we found that silica-coated honeycomb films can be prepared by simple coating of tetraethyl orthosilicate (TEOS) onto polymer honeycomb films, followed by ultraviolet–ozone (UV–O 3 ) treatment . In the present work, using this silica-coated honeycomb film as a template, we prepared Mg 2 Si honeycomb films via a Mg vapor annealing treatment . The effect of the annealing temperature on the structural and chemical composition of the annealed samples is discussed, and we demonstrate the synthesis of highly porous Mg 2 Si via a simple UV–O 3 annealing treatment.…”

Section: Introductionmentioning

confidence: 99%

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Highly Porous Magnesium Silicide Honeycombs Prepared by Magnesium Vapor Annealing of Silica-Coated Polymer Honeycomb Films toward Ultralightweight Thermoelectric Materials

et al. 2020

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Magnesium silicide (Mg2Si) is one of the few thermoelectric materials that is composed of high Clark number elements and exhibits an optimum temperature near 700 K. The advantage of Mg2Si is that it is composed of universal elements and can be synthesized at low cost. However, it has the disadvantage of low efficiency in converting heat flow to electricity due to its high thermal conductivity. In this paper, Mg vapor annealing of silica-coated 1,2-polybutadiene honeycomb films enables the formation of a Mg2Si honeycomb supported by amorphous carbon. The annealing temperature should be greater than 998 K to obtain Mg2Si honeycombs, and we confirmed through detailed chemical analysis that a silica layer can be converted to a Mg2Si layer via formation of Si. Furthermore, the honeycomb structure eventually reduced the thermal diffusivity even though only a single layer of the honeycomb structure formed on the surface. The obtained Mg2Si honeycombs are good candidates for effective and low-cost thermoelectric materials for use in high-temperature applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highly Porous Magnesium Silicide Honeycombs Prepared by Magnesium Vapor Annealing of Silica-Coated Polymer Honeycomb Films toward Ultralightweight Thermoelectric Materials

et al. 2020

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“…Control of the wettability of rough surfaces such as separation membranes can be achieved by mimicking the structures of living organisms. Surface structures that mimic various organisms' surfaces that exhibit high water repellency (e.g., lotus leaves, [23] water strider legs, [24] butterfly scales) [25] and high water wetting ability (e.g., fish scales, [26] dung beetle surfaces [27] ) have been proposed. This basic research has revealed that nano-and microstructures of surface structures impart these biomimetic surfaces with superhydrophobic/superhydrophilic character.…”

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confidence: 99%

Amphiphilic Perforated Honeycomb Films for Gravimetric Liquid Separation

Chen

Wada

Yabu

2021

Adv Materials Inter

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The separation of oil and water is an important technology for solving a wide range of water‐related problems such as purification of industrial wastewater. Herein, the fabrication of an extremely thin oil–water separation membrane is reported by precisely controlling the wettability of a honeycomb (HC) porous membrane. The developed membrane can easily separate water and oil by gravity and capillary force. The method of wettability control by UV–O3 treatment and the resultant change in the separated liquid are discussed. Amphiphilic perforated HC films with controlled wettability can be used in membranes that can separate different liquids according to their densities when the initial liquid added to the surface of the HC film is changed.

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Exploration of Biologically-Inspired Nanostructures: Review on the Sensing Potential and Technological Integration of the Morpho Butterfly Wing

Ahmed,

Hu,

Shi

et al. 2024

Photonic Sens

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The surge in demand for cost-effective, lightweight, and rapidly responsive sensors has propelled research in various fields, and traditional sensors face limitations in performing up to the mark due to their intrinsic properties and a lack of innovative fabrication techniques. Consequently, over the last decade, a notable shift has been toward harnessing naturally existing nanostructures to develop efficient and versatile sensing devices. One such nanostructure in morpho butterfly wings has attracted attention because of its vibrant uniqueness and diverse sensing properties. This review will explore recent interdisciplinary research endeavors on the nanostructure, including chemical, vapor, and acoustic detection. Furthermore, its potential as an infrared sensor, considerations related to heat transfer properties, and a brief overview of various replication techniques and challenges encountered in reproducing the intricate nanostructure are discussed.

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Heat transfer properties of Morpho butterfly wings and the dependence of these properties on the wing surface structure

Abstract: The heat transfer properties of Morpho butterfly wings (red line) were higher than those of Cithaerias wings (blue line) due to their surface structure and emissivity.

Cited by 7 publications

References 30 publications

Highly Porous Magnesium Silicide Honeycombs Prepared by Magnesium Vapor Annealing of Silica-Coated Polymer Honeycomb Films toward Ultralightweight Thermoelectric Materials

Highly Porous Magnesium Silicide Honeycombs Prepared by Magnesium Vapor Annealing of Silica-Coated Polymer Honeycomb Films toward Ultralightweight Thermoelectric Materials

Amphiphilic Perforated Honeycomb Films for Gravimetric Liquid Separation

Exploration of Biologically-Inspired Nanostructures: Review on the Sensing Potential and Technological Integration of the Morpho Butterfly Wing

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