Fig. 1. Schematic figure of the dual-camera acoustofludic nanoscope.
a A 50:50 beam splitter delivered two image planes with two different focal points. A transmitted white light source with a green bandpass filter delivered illumination with minimized chromatic aberration. b Schematic and experimental result of the dual-camera imaging planes: (i) Camera #1 focused at the center height of microspheres, as shown by the pink focal point, (ii) Camera #2 focused on the virtual image plane, as shown by the yellow focal point. Each scale bar is 5 µm. c Schematic figure of the acoustofluidic nanoscope device. A circular-shape piezoelectric transducer is bonded onto a glass cover slip. Induced acoustic energy pushed microspheres to scan the sample surface.