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. Author manuscript; available in PMC: 2020 Jul 2.
Published in final edited form as: Opt Laser Technol. 2019 Mar 4;115:459–464. doi: 10.1016/j.optlastec.2019.02.055

Fig. 6.

Fig. 6.

(a) Metal hex nut (as defect) on the surface of ceramic paste layer before laser scanning. (b) Metal hex nut (as defect) on the surface of ceramic paste layer after laser scanning. (c) The PA image obtained during the laser scanning process.