Fig. 5: Reconfiguring the refractive index profile.
From: Ultrasonically sculpted virtual relay lens for in situ microimaging
a Peaks and troughs of the ultrasonically sculpted refractive index profile change with the applied input electric potential at fres = 832 kHz. b Increasing the intensity of the ultrasonic waves results in an increase of the NA of the virtual ultrasonically sculpted GRIN lens. Inset: variation of the NA for the input electric voltages used in our experiments
