Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have created a chip-scale device ...

Most space missions rely on chemical rockets for propulsion. Rockets must carry fuel, which increases spacecraft mass and limits their speed and travel distance. For decades, researchers have explored ...

Photonic crystals (or photonic bandgap materials) are fascinating materials which have the characteristics of presenting periodic changes in refractive index. Such types of systems can be found in ...

Researchers from Tuskegee University, Alabama, have developed a new photonic crystal (a kind of ...

Engineers created a MEMS-tunable twisted bilayer photonic crystal chip that dynamically adjusts twist angle and spacing to ...

“This work could lead to the first experimental realization of photonic time crystals, propelling them into practical applications and potentially transforming industries," says Professor Viktar ...

Controlling light with light is a long-sought goal for computing and communication technologies. Achieving this capability ...

Photonic time crystals consist of materials with uniform composition in space but properties that vary periodically over time. With this periodic variation, the spectral composition of light can be ...

For decades, researchers have explored light sails as an alternative. These devices use radiation pressure—the force exerted when light reflects from a surface—to generate thrust. When driven by a ...

An international research team has for the first time designed realistic photonic time crystals – materials that exponentially amplify light. The achievement offers several possibilities across fields ...