Secondhand Smoke Detector (IMAGE) Dartmouth College Caption Smaller and lighter than a cellphone and about the size of a Matchbox car, the device uses polymer films to collect and measure nicotine in the air. Credit Eli Burakian, Dartmouth Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.