Simulation of a Photoacoustic-Based Gold Authentication System for Tungsten Inclusion Detection Using COMSOL Multiphysics. Malaysian Journal of Science Health & Technology, [S. l.], v. 12, n. 1, p. 12–20, 2026. DOI: 10.33102/mjosht.506. Disponível em: https://mjosht.usim.edu.my/index.php/mjosht/article/view/506. Acesso em: 24 apr. 2026.