Fig. 1: Images of detected particles via PANORAMA and bright-field.

PANORAMA images of PS beads: a 750 nm, b 460 nm, c 300 nm, d 200 nm, e 100 nm, f 50 nm, and g 25 nm. Bright-field images of PS beads: h 750 nm, i 460 nm, j 300 nm, k 200 nm, and l 100 nm. The squared regions are where the background IR was calculated in Fig. 2l. Scale bar: 5 µm.