Fluorescent Carbon Dots from Cassava Peel Biomass for Enhanced Latent Fingerprint Visualization
Thai researchers converted cassava peel into fluorescent carbon dots by 360 W microwave pyrolysis for nine minutes. The dots emitted blue light at 470 nm under 365 nm excitation with 31% quantum yield. Incorporated into small-particle reagent, they visualised latent-fingerprint ridges and minutiae on glass under UV. This is a limited-surface proof of concept, not a blind forensic validation.