Diamond Sensor Catches Magnetic Signal from a Living Cell ⚡ экспресс
Original: "Spin-based magnetic detection of optically trapped single cell in microfluidic channel"
Scientists replaced unreliable glowing tags with a stable magnetic 'compass' to study single cells more precisely.
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Fluorescent tags in microscopes blink and 'burn out,' obscuring cellular processes. The new approach uses magnetic nanoparticles and diamond sensors — like a metal detector finding a coin in the sand. Even a single tagged cell gave a clear magnetic signal of 89 microtesla, with noise of just 3.9. This 'magnetic eye' will enable ultra-precise disease diagnostics right inside the body.
🎯 Diamond NV centers are engineered defects: a nitrogen atom sitting next to a vacancy in the crystal. Their sensitivity can capture the magnetic field of a single electron from several nanometers away.
🎬 This precision brings us closer to sci-fi medical scanners — like the tricorder from Star Trek, which diagnoses diseases one cell at a time.