Novel in situ detection of alcohol in the exhale of human as a safety protocol

• Published in: Applied physics. A, Materials science & processing Vol. 130; no. 8
• Main Authors: Biswas, Rajib, Saha, D.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.08.2024; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Condensed Matter Physics; Ignition systems; Internet of Things; Machines; Manufacturing; Nanotechnology; Optical and Electronic Materials; Physics; Physics and Astronomy; Processes; Prototypes; Rapid Communications; Surfaces and Interfaces; Thin Films; Alcohol; Concentration; Breathalyzer; Smart sensor
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-024-07711-4

This paper presents here a novel electrical sensor for detecting alcohol concentration in the exhale of an individual. We highlight fabrication of the sensor followed by subsequent assemblage into a handheld unit. The prototype yields a remarkable sensitivity along with a linear range of ~ 250–800 ppm. Additionally, we demonstrate the implementation of it in the helmet of a biker—which is further validated by in situ results related to monitoring exhale activity of few subjects. Through proper tuning with the ignition control system, the prototype can act as a protective gear for drunken drivers. Once the concentration of alcohol is sensed above a permissible level, the ignition system can be momentarily stopped; thereby averting plausible accidents. We believe that this sensor can be upgraded to more advanced protocol via a little tweaking with Internet of Things.