Colourful reaction

摘要

GE is taking inspiration from the nanostruc-ture of butterfly wings to develop sensors for detecting chemical weapons and explosives.rnThe US government-funded project involving scientists from Exeter University aims to create a device to alert users iflow levels of specific gases are present.rnAlthough it is being developed for the military, the sensor could also be used for monitoring power-plant emissions, water purification and food-safety testing, and breath analysis for disease detection.