The Study of the Structural Colouration Observed in the Papilio crino Fabricius, 1792 WingsSackey J1,2*, Nuru ZY1,2, Dompreh KA3 and Maaza M1,2
- *Corresponding Author:
- Juliet Sackey
UNESCO-UNISA Africa Chair in Nanosciences/ Nanotechnology
College of Graduate Studies, University of South Africa (UNISA)
Muckleneuk ridge, P.O. Box 392, Pretoria, South Africa
E-mail: [email protected]
Received date: June 22, 2016; Accepted date: July 05, 2016; Published date: July 12, 2016
Citation: Sackey J, Nuru ZY, Dompreh KA, Maaza M (2016) The Study of the Structural Colouration Observed in the Papilio crino Fabricius, 1792 Wings. J Nanomed Nanotechnol 7:387. doi:10.4172/2157-7439.1000387
Copyright: © 2016 Sackey J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The research on nano-photonics has been on the increase recently. Among the materials that exhibit stunning optical properties are the nano-photonic materials found in nature such as those on butterfly wings. The wing scales of papilio crino was analysed using the Scanning Electron Microscopy (SEM), UV-Vis-NIR spectrometer, and Optical Microscopy (OPM). Under the OPM, the wing scales was imaged both in normal and polarized (45°) light. The SEM images reveal concave surfaces separated by repeating pattern of ridges and cross ribs. The variation in colour across the concave surface modulation was evident from the optical microscopy images. Through the numerical simulation and CIELab colour space, it was shown that the green colour seen on the wings is a combination of yellow and blue light reflected from different microscopic regions on the wing concave surface. This shows application in the bio-mimicks of retroflection sensors for the detection and classification of optical systems.