A simple yet brilliant sensor made with dye‑coated silica squares changes color upon exposure to 12 toxic gases, identifying them with 99% accuracy in just five minutes. It’s low‑cost, durable, and humidity‑proof—a practical breakthrough for environmental safety.

(c) Max Muselmann/Unspaolsh CC0

August 7, 2025

Farbwechselnder Papiersensor erkennt giftige Gase in Minuten

PHYS

Ein einfacher Sensor aus farbigen Silikaflächen erkennt 12 gefährliche Gase in nur fünf Minuten mit 99 % Genauigkeit. Kostengünstig, stabil und resistent gegen Luftfeuchtigkeit – ein praktischer Schritt für unsere Umwelt- und Sicherheitstechnik. 

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