Fig. 7
From: Highly sensitive ultrasound detection using nanofabricated polymer micro-ring resonators
(Reproduced with permission from [58])
a A schematic illustration of PAT setup with the polymer MRR. b 3D PA images (-6 dB iso-surface) of a 50-µm PS bead by using polymer MRRs with a diameter of 100 μm and 40 μm. c 2D colormap images (10-dB dynamic range) on the plane crossing the central position of the bead. Reproduced with permission from [57]. d A schematic illustration of PAM setup with the polymer MRR. e and f MAP PA images on x-y plane of the ex vivo images of the vasculature in a mouse bladder wall by using the polymer MRR ultrasound detector and conventional piezoelectric transducer (HNC-1500, Onda)