#Shaking light with sound
“#Shaking light with sound” Integrated silicon nitride photonic chips with aluminium nitride actuators. Credit: Jijun He, Junqiu Liu (EPFL) Piezoelectric materials can convert electrical voltage to mechanical displacement and vice versa. They are ubiquitous in modern wireless communication networks such as in cellphones. Today, piezoelectric devices, including filters, transducers and oscillators, are used in billions…