Simple color-changing sensor quickly identifies poisonous gases

A durable, paper-based sensor array enables quick and accurate measurements within minutes

11-Aug-2025 - Not all poisonous gases have a smell or a color. But a tiny grid of pastel- and candy-colored squares that effectively “sniffs” out hazardous chemicals in the air such as chlorosarin — a highly toxic nerve agent — could help detect them. Researchers report in ACS Sensors that the colorful ...