A crystal of the lead-free double perovskite Cs₂BiAgBr₆, for which the scientists observed the generation of shear hypersound pulses under femtosecond laser excitation. [Image: Dirk Schemionek]
Hypersound, which refers to acoustic…
A crystal of the lead-free double perovskite Cs₂BiAgBr₆, for which the scientists observed the generation of shear hypersound pulses under femtosecond laser excitation. [Image: Dirk Schemionek]
Hypersound, which refers to acoustic…