It was recently shown that large-aperture lens antennas can be designed by using gradient-index (GRIN) metamaterials and that higher directivity and gain can be obtained than with traditional ...

Novel silicon etching technique crafts 3-D gradient refractive index micro-optics. ScienceDaily. Retrieved December 1, 2025 from www.sciencedaily.com / releases / 2016 / 11 / 161129153525.htm ...

A new design of artificial lens intended to demonstrate refractive properties similar to those inherently shown by many natural lenses been developed by a US team of researchers. Based around a ...

Created from a 3-D printed metamaterial, the new lens could be used for biomedical research and security imaging. From visible light to radio waves, most people are familiar with the different ...

Terahertz radiation is a growing field of technology that enables faster materials analysis than X-ray examination, and provides non-destructive, internal analysis of a raft of different types of ...

The eyes of squid and fish are miracles of evolution, producing bright, sharp images with limited light. How they do this, however, has been a mystery. But now researchers in the US have analysed the ...

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent gradient refractive index (GRIN) ...

From visible light to radio waves, most people are familiar with the different sections of the electromagnetic spectrum. But one wavelength is often forgotten, little understood, and, until recently, ...

(Nanowerk News) From visible light to radio waves, most people are familiar with the different sections of the electromagnetic spectrum. But one wavelength is often forgotten, little understood, and, ...