 Article highlights using two laser wavelengths and different silver concentrations lead to the synthesis BNPs with different sizes and structures. High silver concentrations are limited due to oxidation and instability in the last sample. Synthesis of stable BNPs with controlled shell thickness is possible with the applied PLAO method. This article was authored by Shag Hayadibamini, Amir Hosein Sari, and Davood Durranyan.