Mechanically tuneable nonlinear signal in flexible semiconductor structures
We fabricated a flexible structure that can be stretched by 50% (see video).
Bottom-up grown array of GaAs nanowires (NWs) are embedded in polydimethylsiloxane (PDMS) and mechanically detached from the substrate using a razor blade.
The second-harmonic generation (SHG) intensity can be controlled through mechanical stretching, which changes the distance between the NWs and affects the collective resonance (Mie resonances’ overlap of individual NWs).
Check out our paper external page here!
Video demonstration: