Novel tunable ultrasonic liquid crystal light diffuser paves the way for next-gen indoor lighting

https://phys.org/news/2024-07-tunable-ultrasonic-liquid-crystal-diffuser.html

"LEDs smaller than traditional light sources, necessitating diffusers spreading light over larger area, but diffusion directivity unchangeable... now, tunable ultrasonic liquid crystal (LC) light diffuser without mechanical parts... non-coaxial resonant flexural vibration generation controlling molecular orientation/ refractive-index distribution of nematic LC layer sandwiched between 2 glass disks, and ultrasonic piezoelectric transducing vibrations on glass disks providing control over diffusion angle and direction"