Invisible light beyond the range of human vision plays a vital role in communication technologies, medical diagnostics, and ...

Researchers have built a paper-thin chip that converts infrared light into visible light and directs it precisely, all ...

The invention of tiny devices capable of precisely controlling the direction and behavior of light is essential to the ...

Ultraviolet and near-infrared light are widely used in modern technologies but are invisible to the human eye. Researchers ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists in Switzerland have developed an ultra-thin metalens that converts invisible infrared light into visible light by ...

Metasurfaces in which nonlocal light-matter interactions take place are a potentially useful variant of traditional ...

The aim was to show how powerful surveillance technology such as face recognition appears when used on individuals controlled ...

IR sensors rely on an emitter (IR LED) and a detector (photodiode or photoresistor) to measure infrared light and convert it into electrical signals. There are two main types of sensors: ...

Former Xinjiang government engineer Nureli Abliz, who saw firsthand how surveillance technology flagged thousands of people in China for detention, even when they had committed no crime, is ...

When you unlock a phone, step into view of a security camera or drive past a license plate reader at night, beams of infrared light – invisible to the naked eye — shine onto the unique contours of ...