Imaging Latent Fingerprints by Electrochemiluminescence


  • This work is supported by the National Natural Science Foundation of China (21005071) and Z.J.U.


original image

By exposing an electrode surface with a latent fingerprint to electrochemiluminescence (ECL)-generating luminophore, ECL is produced from the surface not covered by the fingerprint, generating a negative image (see picture, left). The fingerprint can also be pre-stained by luminophores, which generates ECL and yields a positive image (right). ITO=indium tin oxide.