Unveiling spatial correlations in biophotonic architecture of transparent insect wings

TL;DR

This study introduces a non-invasive optical method to analyze the complex microstructures of transparent insect wings, revealing long-range spatial correlations and symmetry with high sensitivity and efficiency.

Contribution

The paper presents a novel, real-time optical diffraction technique that uncovers spatial correlations in insect wing microstructures, comparable to SEM but more efficient and suitable for broad applications.

Findings

Reproducible diffraction patterns reveal structural symmetry.

Long-range spatial correlations identified across various wing types.

Method matches SEM sensitivity while offering real-time analysis.

Abstract

We probe the natural complex structures in the transparent insect wings by a simple, non-invasive, real time optical technique using both monochromatic and broadband femtosecond lasers. A stable, reproducible and novel diffraction pattern is observed unveiling long range spatial correlations and structural-symmetry at various length scales for a large variety of wings. While matching the sensitivity of SEM for such microstructures, it is highly efficient for extracting long range structural organization with potentially broad applicability.