Скачать или смотреть How to Lift Fingerprints: Cyanoacrylate Super Glue Fuming

This video explains the science behind the cyanoacrylate fuming process and how it is used for latent fingermark detection. Cyanoacrylate superglue reacts with the traces of amino acids, fatty acids, and proteins in the latent fingerprint and the moisture in the air to produce a visible, white poly cyanoacrylate that forms along the ridges of the fingerprint. This reaction takes place faster when the cyanoacrylate is heated inside a chamber with some water inside to provide humidity. Fingerprint powders can potentially contaminate the evidence and ruin the opportunity to perform other techniques that could turn up a hidden print or additional information. Therefore, investigators may examine the area with an alternate light source or perform cyanoacrylate (superglue) fuming before using powders.

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Latent prints are not readily visible to the naked eye and must be developed in some way to increase their visibility and contrast. The method shown in this video is to physically enhance the latent prints by using a homemade cyanoacrylate fuming chamber. The fuming chamber can be made fairly easily or be substituted with a glass aquarium or clear plastic container.

Materials:
Super Glue: https://amzn.to/3xfBxdE
Small Aluminum Dishes: https://amzn.to/3l3yJ0R
Zephyr Brush: https://amzn.to/3qbbr9z
Lightning Powder: https://amzn.to/3o8TN4j
Ultra Clear Tape: https://amzn.to/37jHWty
Fingerprint Cards: https://amzn.to/3qinLEG

Timestamps:
0:00 Intro
1:39 How It Works
3:02 The Fuming Chamber
4:57 Developing The Prints
6:17 Post-Processing and Analysis
7:57 Outro

Music:
YouTube Audio Library:
Tracks: Night Run Away, by An Jone. Grut, by Patrick Patrikios
Other:
Meizong - Salt Mines by Argofox is X is licensed under a Creative Commons License.

#Fingerprint #Cyanoacrylate #Forensics
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