Citation: Gang Qin, Mei-Qin Zhang, Yang Zhang, Yu Zhu, Shou-Liang Liu, Wen-Jin Wu, Xue-Ji Zhang. Visualization of latent fingerprints using Prussian blue thin films[J]. Chinese Chemical Letters, ;2013, 24(2): 173-176. shu

Visualization of latent fingerprints using Prussian blue thin films

1.
Research Center for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China

Corresponding author: Mei-Qin Zhang,
Received Date: 15 November 2012
Available Online: 12 December 2012
Fund Project:

Herein, a facile and effective approach was proposed for visualizing latent fingerprints (LFPs) on two kinds of conductive surfaces by spatially selective electrochemical deposition of Prussian blue (PB) thin films. This strategy exploited the fingerprint residue as an insulating mask and the PB thin films were only generated on the bare surface including the valleys between the papillary ridges, which produced a negative image of LFPs with high resolution up to the third level information. The surface morphology of PB films was characterized by the field emission scanning electron microscopy (FE-SEM). This enhancement technique showed promising performance in selected materials of practical interest.
- Forensic science,
- Prussian blue,
- Electrodeposition,
- Latent fingerprints
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