Light bends when travelling through a concentration gradient of sugar in water. The top layer of liquid is pure water while the bottom layer is concentrated sugar water. In these layers, there is no ...

Among the various sensing modalities available for bioprocess operations, index of refraction (IoR) is intriguing for its simplicity and capability for sample-less, real-time readout. A group led by ...

Researchers in Korea have created a new metamaterial with the most extreme positive index of refraction yet – a whopping 38.6. The metamaterial operates at terahertz frequencies and the team believes ...

As cataract surgery evolves toward a precision refractive paradigm, the accuracy of postoperative refractive prediction for ...

South Korea's ETRI is developing a transparent element with a variable refractive index. The transforming lens developed by ETRI researchers. The lens's curvature changes when an electric current is ...