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Reflection of Multilayered Surfaces Measured

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Technique reliably determines the refractive index of a beetle’s exocuticle.

Michael J. Lander

Beetles’ rigid forewings, called elytra, often display multilayered structures and iridescent metallic colors. As one might imagine, their refractive index proves hard to measure accurately. To help address this challenge, Joseph A. Noyes and colleagues at the University of Exeter in the UK have developed a system that could allow more effective characterization and design of multilayered surfaces. Scientists measured the refractive index of all the individual layers that make up Chrysochroa raja’s colorful forewings during illumination with white and laser light. Prior to collection...Read full article

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    Published: June 2007
    Glossary
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    fiber opticsmetallicMicroscopymultilayered structuresphotonicsResearch & TechnologyspectroscopyTech PulseUniversity of Exeter

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