Visualization of Latent Fingerprints on Aluminum | Zendy

Rachel Fischer | Zendy; Marco Oetken | Zendy

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Visualization of Latent Fingerprints on Aluminum

Author(s) -

Rachel Fischer,

Marco Oetken

Publication year - 2019

Publication title -

chimia international journal for chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.387

H-Index - 55

eISSN - 2673-2424

pISSN - 0009-4293

DOI - 10.2533/chimia.2019.945

Subject(s) - copper , aluminium , visualization , materials science , electrolyte , ammonia , trace (psycholinguistics) , deposition (geology) , metallurgy , nanotechnology , inorganic chemistry , chemistry , computer science , electrode , data mining , paleontology , linguistics , philosophy , organic chemistry , sediment , biology

For aluminum, a new visualization method is presented in which copper is deposited electrochemically. The fingerprint on the aluminum (trace carrier) serves as an insulator as it prevents direct contact between electrolyte and aluminum. The decisive factor is the choice of an ammoniacal copper sulfate solution, which acts as a corrosion inhibitor due to the ammonia molecules. This enables uniform copper deposition on aluminum and thus the development of a clearly defined negative image.

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