Infrared negative refractive index

2007/05/01 Elhuyar Zientzia Iturria: Elhuyar aldizkaria

• Materialak
• Fisika

Non-opaque materials for light have a positive refractive index. If there were materials with negative refractive index, the world of optics would have new possibilities, but at the moment there is no such material. It is not found in the frequencies of light, but in radiations of greater wavelength, those of the microwaves. And over time, physicists expect to be at the frequencies of light. Some American physicists have obtained negative refraction for infrared radiation frequencies at the visible light limit.