Theoretical condition for transparency in mesoporous layered optical media: Application to switching of hygrochromic coatings

O. Deparis; M. N. Ghazzal; P. Simonis; S. Mouchet; H. Kebaili; J. De Coninck; E. M. Gaigneaux; J. P. Vigneron

doi:10.1063/1.4862658

Theoretical condition for transparency in mesoporous layered optical media: Application to switching of hygrochromic coatings

O. Deparis, M. N. Ghazzal, P. Simonis, S. Mouchet, H. Kebaili, J. De Coninck, E. M. Gaigneaux, J. P. Vigneron

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Abstract

Mesoporous Bragg stacks are able to change color upon infiltration or displacement of liquid compounds inside their porous structure. Reversible switching from transparency to coloration offers additional functionality. Based on Bruggeman's effective medium theory, we derive a transparency master equation, which is valid for bilayers of arbitrary host materials and pore-filling compounds. The transparency condition fixes pore volume fractions such that the effective refractive index is homogenized through the bilayer, hence, through arbitrary layered optical media built from this bilayer. This general concept is applied to the case of switching of hygrochromic coatings made of mesoporous mixed oxide Bragg stacks.

Original language	English
Article number	023704
Pages (from-to)	3704
Number of pages	4
Journal	Applied Physics Letters
Volume	104
Issue number	2
DOIs	https://doi.org/10.1063/1.4862658
Publication status	Published - 13 Jan 2014

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10.1063/1.4862658

Deparis, 2014, APLAccepted author manuscript, 967 KB

http://adsabs.harvard.edu/abs/2014ApPhL.104b3704D

Cite this

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title = "Theoretical condition for transparency in mesoporous layered optical media: Application to switching of hygrochromic coatings",

abstract = "Mesoporous Bragg stacks are able to change color upon infiltration or displacement of liquid compounds inside their porous structure. Reversible switching from transparency to coloration offers additional functionality. Based on Bruggeman's effective medium theory, we derive a transparency master equation, which is valid for bilayers of arbitrary host materials and pore-filling compounds. The transparency condition fixes pore volume fractions such that the effective refractive index is homogenized through the bilayer, hence, through arbitrary layered optical media built from this bilayer. This general concept is applied to the case of switching of hygrochromic coatings made of mesoporous mixed oxide Bragg stacks.",

author = "O. Deparis and Ghazzal, {M. N.} and P. Simonis and S. Mouchet and H. Kebaili and {De Coninck}, J. and Gaigneaux, {E. M.} and Vigneron, {J. P.}",

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T1 - Theoretical condition for transparency in mesoporous layered optical media: Application to switching of hygrochromic coatings

AU - Deparis, O.

AU - Ghazzal, M. N.

AU - Simonis, P.

AU - Mouchet, S.

AU - Kebaili, H.

AU - De Coninck, J.

AU - Gaigneaux, E. M.

AU - Vigneron, J. P.

PY - 2014/1/13

Y1 - 2014/1/13

N2 - Mesoporous Bragg stacks are able to change color upon infiltration or displacement of liquid compounds inside their porous structure. Reversible switching from transparency to coloration offers additional functionality. Based on Bruggeman's effective medium theory, we derive a transparency master equation, which is valid for bilayers of arbitrary host materials and pore-filling compounds. The transparency condition fixes pore volume fractions such that the effective refractive index is homogenized through the bilayer, hence, through arbitrary layered optical media built from this bilayer. This general concept is applied to the case of switching of hygrochromic coatings made of mesoporous mixed oxide Bragg stacks.

AB - Mesoporous Bragg stacks are able to change color upon infiltration or displacement of liquid compounds inside their porous structure. Reversible switching from transparency to coloration offers additional functionality. Based on Bruggeman's effective medium theory, we derive a transparency master equation, which is valid for bilayers of arbitrary host materials and pore-filling compounds. The transparency condition fixes pore volume fractions such that the effective refractive index is homogenized through the bilayer, hence, through arbitrary layered optical media built from this bilayer. This general concept is applied to the case of switching of hygrochromic coatings made of mesoporous mixed oxide Bragg stacks.

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DO - 10.1063/1.4862658

M3 - Letter

SN - 1077-3118

VL - 104

SP - 3704

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 2

M1 - 023704

ER -

Theoretical condition for transparency in mesoporous layered optical media: Application to switching of hygrochromic coatings

Abstract

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Tailored refractive index of inorganic mesoporous mixed-oxide Bragg stacks with bio-inspired hygrochromic optical properties

Porosity control and surface sensitivity of titania/silica mesoporous multilayer coatings: applications to optical Bragg resonance tuning and molecular sensing

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Cite this

Theoretical condition for transparency in mesoporous layered optical media: Application to switching of hygrochromic coatings

Abstract

Access to Document

Other files and links

Fingerprint

Research output

Tailored refractive index of inorganic mesoporous mixed-oxide Bragg stacks with bio-inspired hygrochromic optical properties

Porosity control and surface sensitivity of titania/silica mesoporous multilayer coatings: applications to optical Bragg resonance tuning and molecular sensing

Projects

HYGROCHROM: HYGROCHROM

Cite this