Florida Sheriff's Office Uses Vaporized Gold to Reveal Invisible Fingerprints

Advanced Fingerprint Detection with Vaporized Gold

• 💡 The Pinellas County Sheriff’s Office employs a unique crime-fighting tool: vaporized gold dust to reveal latent fingerprints.
• 🔬 This technology is used within a vacuum metal deposition (VMD) chamber to make fingerprints visible that are otherwise imperceptible to the naked eye.

How Vacuum Metal Deposition Works

• 🛠️ Metals like gold, silver, or copper are heated in the VMD machine until they become a gas.
• 📌 This metal vapor then adheres to the background of the evidence, and is often followed by zinc to enhance contrast for easier viewing.
• ✅ The process transforms evidence from its original state to one where fingerprints are clearly visible, aiding in suspect identification.

Versatility and Limitations of VMD Technology

• 🎯 The VMD chamber is effective for processing a wide range of evidence, including bullet casings, and can handle both new and old prints.
• ⚠️ A key limitation is that the VMD cannot process items that are wet or pressurized.
• 📈 The Pinellas County Sheriff's Office has utilized VMD technology since 2000, upgrading to a larger, walk-in freezer-sized unit this year.
• 🌟 This advanced technology is rare, with only 9% of Florida sheriff's offices possessing such equipment.