Enríquez-Sánchez, N., Vilchis-Nestor, A.R., Camacho-López, S., Camacho-López, M.A. and Camacho-López, M. 2024. Photoluminescent carbon colloids prepared by laser fragmentation of carbon from waste coffee grounds. Superficies y Vacío. 37, (Sep. 2024), 240901. DOI:https://doi.org/10.47566/2024_syv37_1-240901.