Cornell University researchers have demonstrated nanoscale techniques they say enabled the world's first silicon chip that switches optical wavelengths. The key is a ring-shaped nanoscale cavity whose ...

Although negative-refractive-index materials do not occur naturally, several groups have successfully made them. But so far these materials have only operated at microwave frequencies. The new ...

Gradient refractive index (GRIN) optics represent a transformative approach in optical design whereby the refractive index varies continuously within a material rather than remaining uniform.

Novel silicon etching technique crafts 3-D gradient refractive index micro-optics Date: November 29, 2016 Source: University of Illinois College of Engineering Summary: A multi-institutional ...

TheFIS4WavefrontSensorhashighprecisionandhigh-resolutionmeasurementcapabilities,enablingdetectionandcali… ...

Refractive index - the ratio of the speed of electromagnetic radiation in a medium to its speed in a vacuum - can be modulated fast enough to generate photonic time crystals (PTCs) in the near ...

Scientists have unveiled a groundbreaking discovery: a material capable of bending light in unprecedented ways. This advancement opens up possibilities for innovations in optics, including superlenses ...

Orad Reshef, who is now at the University of Ottawa, says he was inspired to investigate materials with zero refractive index because “zero was such an abstract concept”. But, more practically, he ...

Research & Development New metamaterial enables refractive index of zero 20 Oct 2015 Development by Harvard SEAS offers "new possibilities" for integrated optics, telecoms applications and research.