Assessment of environmental spectral ellipsometry for characterising fluid-induced colour changes in natural photonic structures

Research output: Contribution to journalArticle

Abstract

Porous photonic structures found in several living organisms are known to display colour changes induced upon contact with liquids, vapours and gases. Usually these changes are due to physico-chemical phenomena such as the swelling of the structure enacted by the fluids, vapour physisorption on the pore walls, capillary condensation or a combination of them. Generally, the porous structures are open to outside, leading to fast fluid exchanges with the surrounding environment and consequently fast colour changes. In this article, we first introduce fluid-induced optical changes in living organisms exhibiting porous photonic structures. We explore then the potentiality of environmental ellipsometry for the first time in the context of natural photonic structures through the investigation of the optical response of the male cerulean chafer beetle Hoplia coerulea (Scarabaeidae) upon contact with water, 2-propanol and toluene vapours. In contrast with most of the investigated photonic structures, this beetle's structure is encased by an envelope that mediates liquid exchanges with the environment. Such a study is of great interest in order to understand the underlying biological functions behind these changes as well as in order to develop bioinspired applications such as gas sensors and other environment-responsive coatings.

Original languageEnglish
Pages (from-to)4987 - 4997
Number of pages11
JournalMaterials Today Proceedings
Volume4
Issue number4
DOIs
Publication statusPublished - 2017

Fingerprint

Ellipsometry
Photonics
Color
Fluids
Vapors
Contacts (fluid mechanics)
Physisorption
2-Propanol
Toluene
Liquids
Propanol
Chemical sensors
Swelling
Condensation
Gases
Coatings
Water

Keywords

  • Structural colours
  • photonic crystals
  • optical sensors
  • photonic bandgap materials
  • natural photonic crystal
  • colour
  • ellipsometry
  • Natural photonic crystal
  • Photonic crystals
  • Colour
  • Ellipsometry
  • Photonic bandgap materials
  • Optical sensors

Cite this

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title = "Assessment of environmental spectral ellipsometry for characterising fluid-induced colour changes in natural photonic structures",
abstract = "Porous photonic structures found in several living organisms are known to display colour changes induced upon contact with liquids, vapours and gases. Usually these changes are due to physico-chemical phenomena such as the swelling of the structure enacted by the fluids, vapour physisorption on the pore walls, capillary condensation or a combination of them. Generally, the porous structures are open to outside, leading to fast fluid exchanges with the surrounding environment and consequently fast colour changes. In this article, we first introduce fluid-induced optical changes in living organisms exhibiting porous photonic structures. We explore then the potentiality of environmental ellipsometry for the first time in the context of natural photonic structures through the investigation of the optical response of the male cerulean chafer beetle Hoplia coerulea (Scarabaeidae) upon contact with water, 2-propanol and toluene vapours. In contrast with most of the investigated photonic structures, this beetle's structure is encased by an envelope that mediates liquid exchanges with the environment. Such a study is of great interest in order to understand the underlying biological functions behind these changes as well as in order to develop bioinspired applications such as gas sensors and other environment-responsive coatings.",
keywords = "Structural colours, photonic crystals, optical sensors, photonic bandgap materials, natural photonic crystal, colour, ellipsometry, Natural photonic crystal, Photonic crystals, Colour, Ellipsometry, Photonic bandgap materials, Optical sensors",
author = "S{\'e}bastien Mouchet and {Van Hooijdonk}, Elo{\"i}se and Victoria Welch and Pierre Louette and Tijani Tabarrant and Peter Vukusic and St{\'e}phane Lucas and Jean-Fran{\cc}ois Colomer and Su, {Bao Lian} and Olivier Deparis",
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AU - Welch, Victoria

AU - Louette, Pierre

AU - Tabarrant, Tijani

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AU - Lucas, Stéphane

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AU - Su, Bao Lian

AU - Deparis, Olivier

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