Biomimetic macroscopic hierarchical moire gratings

Mahyar Mazloumi; Mahyar Mazloumi; Yazan Bdour; Carlos Escobedo; Ribal Georges Sabat

doi:10.1364/AO.461446

Applied Optics
Vol. 61,
Issue 18,
pp. 5428-5434
(2022)
•https://doi.org/10.1364/AO.461446

Biomimetic macroscopic hierarchical moire gratings

Mahyar Mazloumi, Yazan Bdour, Carlos Escobedo, and Ribal Georges Sabat

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Mahyar Mazloumi, Yazan Bdour, Carlos Escobedo, and Ribal Georges Sabat, "Biomimetic macroscopic hierarchical moire gratings," Appl. Opt. 61, 5428-5434 (2022)

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Abstract

Large-scale hierarchical macroscopic moire gratings resembling the surface structure of Peruvian lily flower petals are fabricated on azobenzene molecular glass thin films using a Lloyd’s mirror interferometer. It is shown that nanostructured linear and crossed moire gratings can be made with pitch values reaching a few millimeters. Also, using atomic force microscopy, scanning electron microscopy, optical microscopy, and surface profilometry techniques, it is shown that the obtained moire gratings have two-fold or three-fold hierarchical structures fabricated using a simple all optical technique.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Sample ID	$Λ_{1}$ [nm]	$Λ_{2}$ [nm]	$Λ_{L}$ [µm]	$Λ_{s}$ [nm]
${M 2 L G}_{1}$	1151.0	1150.2	1655.0	1150.6
${M 2 L G}_{2}$	1151.0	1149.3	778.0	1150.2
${M 2 L G}_{3}$	1151.0	1147.4	367.0	1149.2

Pitch Values	${M 3 L G}_{1}$	${M 3 L G}_{2}$	${M 3 L G}_{3}$	${M 3 L G}_{4}$	${M 3 L G}_{5}$	${M 3 L G}_{6}$
$Λ_{L}^{S . P .} [µ m]$	752.0	753.0	758.0	760.0	768.0	776.0
$Λ_{m}^{L . D .} [µ m]$	5.5	7.7	12.4	26.3	44.8	151.1
$Λ_{s}^{AFM} [n m]$	1148.0	1141.0	1141.0	1148.0	1147.0	1147.0
$Λ_{s}^{L . D .} [n m]$	1148.0	1147.0	1147.0	1148.0	1147.0	1147.0

Sample ID	$Λ_{1}$ [nm]	$Λ_{2}$ [nm]	$Λ_{L}$ [µm]	$Λ_{s}$ [nm]
${M 2 L G}_{1}$	1151.0	1150.2	1655.0	1150.6
${M 2 L G}_{2}$	1151.0	1149.3	778.0	1150.2
${M 2 L G}_{3}$	1151.0	1147.4	367.0	1149.2

Pitch Values	${M 3 L G}_{1}$	${M 3 L G}_{2}$	${M 3 L G}_{3}$	${M 3 L G}_{4}$	${M 3 L G}_{5}$	${M 3 L G}_{6}$
$Λ_{L}^{S . P .} [µ m]$	752.0	753.0	758.0	760.0	768.0	776.0
$Λ_{m}^{L . D .} [µ m]$	5.5	7.7	12.4	26.3	44.8	151.1
$Λ_{s}^{AFM} [n m]$	1148.0	1141.0	1141.0	1148.0	1147.0	1147.0
$Λ_{s}^{L . D .} [n m]$	1148.0	1147.0	1147.0	1148.0	1147.0	1147.0

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Applied Optics