Fig. 5.

(a) Photoacoustic projection image of two crossed porcine bristles. The bristles have a diameter in the range of 120-145 µm and are embedded in agarose/Intralipid. The red lines indicate where the profiles for the averaged profile in (b) are taken from. The 10% to 90% edge responses of the average profile are 85 µm and 102 µm respectively. The full-width-at-half-maximum is 257 µm.