Topic: photoacoustic membrane

Ultrasound stimulation of the retina was proposed as an alternative to retinal prostheses for visual restoration. Prior works have shown that the retina responds to mechanical stimulation, but no attempt on stimulating an ex vivo retina with a free-standing photoacoustic membrane had yet been made. Here, we report ultrahigh precision stimulation of the retina with optically generated focused ultrasound (OFUS). OFUS is generated with a photoacoustic membrane of embedded carbon nanoparticles in polydimetylsiloxane. Using ex vivo multielectrode array recording and pharmalogical approaches, we inv