Which modern technique involves the use of chemical vapor deposition to develop latent fingerprints on non-porous surfaces?
A. Vapor-phase cyanoacrylate fuming
B. Chemical vapor imaging
C. Vapor-phase metal deposition
D. Chemical vapor development
Answer:A
Which modern technique involves the use of chemical vapor deposition to develop latent fingerprints on non-porous surfaces?
A. Vapor-phase cyanoacrylate fuming B. Chemical vapor imaging C. Vapor-phase metal deposition D. Chemical vapor development
Explanation: Vapor-phase cyanoacrylate fuming is a modern technique used to develop latent fingerprints on non-porous surfaces. It involves the use of cyanoacrylate, a common adhesive, which is vaporized and then exposed to the surface containing the latent fingerprints. The cyanoacrylate vapors react with the fingerprint residues, forming a white polymerized material that visualizes the fingerprint ridges. This technique improves the visibility and quality of fingerprint development on non-porous surfaces, such as glass or plastic.