Sensor (IMAGE) ETH Zurich Caption The millimeter-sized black dot in the center of the gold section is the alcohol sensor. Credit Van den Broek J et al. <i>Nature Communications</i> 2019 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.