Controlled emission
A photograph of a photonic crystal that is about 2 millimetres across. The blue irridescence is caused by light reflections off the ordered stack of air spheres. (Credit: COPS)
A community website from IOP Publishing
A community website from IOP Publishing
A photograph of a photonic crystal that is about 2 millimetres across. The blue irridescence is caused by light reflections off the ordered stack of air spheres. (Credit: COPS)