A shape-anisotropic reflective polarizer in a stomatopod crustacean

Thomas M Jordan, David Wilby, Tsyr-Huei Chiou, Kate D Feller, Roy Caldwell, TW Cronin, Nicholas W Roberts

Research output: Contribution to journalArticle (Academic Journal)peer-review

11 Citations (Scopus)
388 Downloads (Pure)


Many biophotonic structures have their spectral properties of reflection ‘tuned’ using the (zeroth-order) Bragg criteria for phase constructive interference. This is associated with a periodicity, or distribution of periodicities, parallel to the direction of illumination. The polarization properties of these reflections are, however, typically constrained by the dimensional symmetry and intrinsic dielectric properties of the biological materials. Here we report a linearly polarizing reflector in a stomatopod crustacean that consists of 6-8 layers of hollow, ovoid vesicles with principal axes of ~550nm, ~250nm and ~150nm. The reflection of unpolarized normally incident light is blue/green in colour with maximum reflectance wavelength of 520 nm and a degree of polarization greater than 0.6 over most of the visible spectrum. We demonstrate that the polarizing reflection can be explained by a resonant coupling with the first-order, in-plane, Bragg harmonics. These harmonics are associated with a distribution of periodicities perpendicular to the direction of illumination, and, due to the shape-anisotropy of the vesicles, are different for each linear polarization mode. This control and tuning of the polarization of the reflection using shape-anisotropic hollow scatterers is unlike any optical structure previously described and could provide a new design pathway for polarization-tunability in man-made photonic devices.
Original languageEnglish
Article number21744
Number of pages8
JournalScientific Reports
Publication statusPublished - 17 Feb 2016


  • Behavioural ecology
  • Biophotonics
  • Photonic crystals


Dive into the research topics of 'A shape-anisotropic reflective polarizer in a stomatopod crustacean'. Together they form a unique fingerprint.

Cite this