Colloidal photonic glasses offer an appealing way to produce vivid colors without any chemical dyes—but so far, a stubborn optical effect has long prevented them from generating a true red color. Now, ...
Researchers made nanoporous SiO2 coatings for ultraviolet laser optics, achieving uniform large area films and higher damage ...
When researchers want to uncover what atoms make up a material, they turn to a number of tried-and-true spectroscopy methods. Spectroscopy works by shining a specific type of light onto a substance ...
Scientists in China developed a method for preparing porous SiO2 materials by combining electron beam co-evaporation with selective chemical etching. Based on this method, all-silica ultraviolet laser ...
Our understanding of the electromagnetic spectrum goes back to Isaac Newton, but astronomers are still finding new ways to ...
Atomic-scale MoOCl2 bends light with record strength, enabling ultrathin optics for smart contact lenses, AR glasses, and invisible wearables.
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What is the refraction of a wave and how can you draw it? VideoWhat is the refraction of a wave and how can you draw it? Dr George Dransfield explains how refraction works and how to draw the ...
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