Fig. 4From: Rapid visualization of latent fingermarks using gold seed-mediated enhancementOptical images of latent fingermarks (a) collected immediately and b 24 h after deposition using professional forensic tape after treatment with Au seed-mediated enhancement. Both samples used the same experimental conditions. The treatment time of LBA-Au NPs (200 µL) and Au+-complex solution (300 µL) for fingermarks were 5 and 3 min, respectivelyBack to article page