Atomic clocks are more accurate than those used to define the second, suggesting the definition might need to change ...

Researchers at the University of Twente have solved a long-standing problem: trapping optically-generated sound waves in a standard silicon photonic chip. This discovery, published as a featured ...

In a study published in Optics Express, a research group led by Prof. Fu Yuxi from Xi'an Institute of Optics and Precision ...