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Updated: Jun 19, 2026

Insights into the Interactions of Amino Acids and Peptides with Inorganic Materials Using Single-Molecule Force Spectroscopy
Published on: March 6, 2017
An amino acid model for latent fingerprints on porous surfaces
1KT 41-2 Research, Development and Testing of Fingerprint Detection Methods, Kriminaltechnisches Institut des Bundeskriminalamts, 65173 Wiesbaden, Germany. Lothar.Schwarz@bka.bund.de
Abstract:
Analytical standards are needed in latent fingerprint detection for research and development as well as for quality control in routine work because normal fingerprints are too varied for comparison studies and tests. One way is to create latent fingerprints. For the amino acid sensitive detection method this can be achieved by coating test items with an amino acid solution using a modified commercial office bubble jet printer. Besides low costs, fast and easy preparation, the main advantage of a bubble jet printer is that the amino acid loading per area on the test item can be calculated by weighing the cartridge on a balance. This opens the possibility to determine the deviation for every printing series. The reproducibility of prints in a printing series made by one cartridge has a deviation of 2-16% and of prints made by different cartridges 20-25%.
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