Nanowerk June 27, 2022
An international team of researchers (Australia, Saudi Arabia) has demonstrated a sprayable on-site sensing tool, Spry-n-Sense, which consists of chromogen-doped polymer that is sprayed out in the form of nanofibers using a simple nebulization method. The nebulization method allows for nanofibers to be sprayed onto any surface. The sprayable nanofibers sensors only require compressed gas, making it possible to spray nanofibers even on non-conducting surfaces. The application performs on-site image analysis of the visually quantifiable color or fluorescence changes on the area of analyte exposure by calculating relative pixel intensity per ppm from photographs of the nanofibers exposed to the analyte.
To enable on-site detection and quantification of analytes they designed and developed a compatible smartphone-based application. The chromogenic dopants in the polymer matrix chosen for this work can be easily switched to make the sprayable sensors selective to different target analytes…read more. TECHNICAL ARTICLE