To control color, the team sandwiched the polymer between two gold films. Light bounces off these films and interferes in ...

A flexible optical identifier uses polarized emission from self-assembled crystal films to create two stable states that support tri modal authentication and improve reliability in secure device ...

The color change, driven by hormones, seems aimed at preventing males from accidentally mating with each other. Two Asian common toad couples mating in Karnataka, India. The yellow toads pictured are ...

NTT’s research division has developed what it claims to be the world’s first programmable nonlinear photonic waveguide capable of switching between multiple nonlinear-optical functions on a single ...

When driving on Florida streets, the law is clear on 'running' a yellow light. According to 2025 Florida Statute Chapter 316, Subsection 316.075, the meaning of the steady yellow light found in a ...

The visible patterns produced by the time crystals could be used for data storage and anti-counterfeiting designs. When you purchase through links on our site, we may earn an affiliate commission.

It may not be great on the eyes, but it could be a new way to take care of those pit stains. By Andrew Paul Published Sep 3, 2025 10:00 AM EDT Get the Popular Science daily newsletter💡 Breakthroughs, ...

We all have that favorite piece of clothing, and we're all familiar with the sinking feeling when we spill something on it. But now, new reports have revealed a simple way to remove pesky stains. ACS ...

When Vincent Van Gogh moved to Paris from the Netherlands in 1886, he began chronicling his life in letters to his brother Theo. His regular dispatches covered nearly 700 correspondences throughout ...

Sweat and food stains can ruin your favorite clothes. But bleaching agents such as hydrogen peroxide or dry-cleaning solvents that remove stains aren’t options for all fabrics, especially delicate ...

“Supermode” is controllable pattern brighter than combined separate devices. 940 nm dual-cavity photonic crystal VCSEL array. Click for info. Today, VCSELs (vertical cavity surface-emitting lasers) ...