Cuticle network and orientation preference of photonic crystals in the scales of the weevil Lamprocyphus augustus

R. Ebihara, H. Hashimoto, Jun Kano, T. Fujii, S. Yoshioka

Research output: Contribution to journalArticle

Abstract

This paper reports the structural and optical investigations of the structural colour of the weevil Lamprocyphus augustus. The photonic crystal structure within the weevil’s scales was investigated using sequential focused ion-beam milling and scanning electron microscopy imaging. We carefully analysed the reconstructed three-dimensional structure to determine the unit cell of the photonic crystal. It was found that the cuticle network of the cubic unit cell perfectly matches the previously reported diamond-based network. However, different results were obtained for the crystal orientations of the small crystal domains that comprise the entire photonic crystal structure in the scales:,111. directions are highly preferred along the surface normal of the scale. This finding explains the fact that the scale is almost uniformly coloured despite the multi-domain structure. It is confirmed experimentally and theoretically that the wavelength range of the reflection band corresponds to the gap of the photonic band.

Original languageEnglish
Article number20180360.
JournalJournal of the Royal Society Interface
Volume15
Issue number145
DOIs
Publication statusPublished - Jan 1 2018

Fingerprint

Optics and Photonics
Weevils
Photonic crystals
Crystal orientation
Crystal structure
Diamond
Focused ion beams
Photonics
Diamonds
Electron Scanning Microscopy
Color
Imaging techniques
Wavelength
Crystals
Scanning electron microscopy
Ions

Keywords

  • Photonic crystal
  • Structural colour
  • Weevil

ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • Bioengineering
  • Biomaterials
  • Biochemistry
  • Biomedical Engineering

Cite this

Cuticle network and orientation preference of photonic crystals in the scales of the weevil Lamprocyphus augustus. / Ebihara, R.; Hashimoto, H.; Kano, Jun; Fujii, T.; Yoshioka, S.

In: Journal of the Royal Society Interface, Vol. 15, No. 145, 20180360., 01.01.2018.

Research output: Contribution to journalArticle

@article{54b25bf265074b69a489535766563d5d,
title = "Cuticle network and orientation preference of photonic crystals in the scales of the weevil Lamprocyphus augustus",
abstract = "This paper reports the structural and optical investigations of the structural colour of the weevil Lamprocyphus augustus. The photonic crystal structure within the weevil’s scales was investigated using sequential focused ion-beam milling and scanning electron microscopy imaging. We carefully analysed the reconstructed three-dimensional structure to determine the unit cell of the photonic crystal. It was found that the cuticle network of the cubic unit cell perfectly matches the previously reported diamond-based network. However, different results were obtained for the crystal orientations of the small crystal domains that comprise the entire photonic crystal structure in the scales:,111. directions are highly preferred along the surface normal of the scale. This finding explains the fact that the scale is almost uniformly coloured despite the multi-domain structure. It is confirmed experimentally and theoretically that the wavelength range of the reflection band corresponds to the gap of the photonic band.",
keywords = "Photonic crystal, Structural colour, Weevil",
author = "R. Ebihara and H. Hashimoto and Jun Kano and T. Fujii and S. Yoshioka",
year = "2018",
month = "1",
day = "1",
doi = "10.1098/rsif.2018.0360",
language = "English",
volume = "15",
journal = "Journal of the Royal Society Interface",
issn = "1742-5689",
publisher = "Royal Society of London",
number = "145",

}

TY - JOUR

T1 - Cuticle network and orientation preference of photonic crystals in the scales of the weevil Lamprocyphus augustus

AU - Ebihara, R.

AU - Hashimoto, H.

AU - Kano, Jun

AU - Fujii, T.

AU - Yoshioka, S.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - This paper reports the structural and optical investigations of the structural colour of the weevil Lamprocyphus augustus. The photonic crystal structure within the weevil’s scales was investigated using sequential focused ion-beam milling and scanning electron microscopy imaging. We carefully analysed the reconstructed three-dimensional structure to determine the unit cell of the photonic crystal. It was found that the cuticle network of the cubic unit cell perfectly matches the previously reported diamond-based network. However, different results were obtained for the crystal orientations of the small crystal domains that comprise the entire photonic crystal structure in the scales:,111. directions are highly preferred along the surface normal of the scale. This finding explains the fact that the scale is almost uniformly coloured despite the multi-domain structure. It is confirmed experimentally and theoretically that the wavelength range of the reflection band corresponds to the gap of the photonic band.

AB - This paper reports the structural and optical investigations of the structural colour of the weevil Lamprocyphus augustus. The photonic crystal structure within the weevil’s scales was investigated using sequential focused ion-beam milling and scanning electron microscopy imaging. We carefully analysed the reconstructed three-dimensional structure to determine the unit cell of the photonic crystal. It was found that the cuticle network of the cubic unit cell perfectly matches the previously reported diamond-based network. However, different results were obtained for the crystal orientations of the small crystal domains that comprise the entire photonic crystal structure in the scales:,111. directions are highly preferred along the surface normal of the scale. This finding explains the fact that the scale is almost uniformly coloured despite the multi-domain structure. It is confirmed experimentally and theoretically that the wavelength range of the reflection band corresponds to the gap of the photonic band.

KW - Photonic crystal

KW - Structural colour

KW - Weevil

UR - http://www.scopus.com/inward/record.url?scp=85053023838&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053023838&partnerID=8YFLogxK

U2 - 10.1098/rsif.2018.0360

DO - 10.1098/rsif.2018.0360

M3 - Article

C2 - 30089688

AN - SCOPUS:85053023838

VL - 15

JO - Journal of the Royal Society Interface

JF - Journal of the Royal Society Interface

SN - 1742-5689

IS - 145

M1 - 20180360.

ER -