A property of a material that changes the speed of light, computed as the ratio of the speed of light in a vacuum to the speed of light through the material. When light travels at an angle between two ...

Researchers at Harvard University, working with collaborators at the University of Lisbon, discovered that low-index silica ...

A research team led by SUTD has created nanoscale glass structures with near-perfect reflectance, overturning long-held assumptions about what low-index materials can do in photonics. For decades, ...

Recent experiments that demonstrate the negative refraction of light could bring a heated scientific debate to a close, and give negative-index materials a positive future Figure 1: Negative-index ...

I hope you don’t need me to remind you, but Monday 16 May 2022 is the fifth International Day of Light. It marks the anniversary of the first successful operation of the laser on 16 May 1960 by ...