Wearable Nicotine Sensors

  • Author: ChemistryViews
  • Published: 18 December 2021
  • Copyright: Wiley-VCH GmbH
  • Associated Societies: American Chemical Society (ACS), USA
thumbnail image: Wearable Nicotine Sensors

Nicotine, an addictive substance in cigarettes and e-cigarettes ("vapes"), increases the risk of, e.g., cardiovascular and respiratory disorders. Assessing nicotine exposure under real-world conditions can be challenging. Current methods for measuring ambient nicotine levels are usually carried out in laboratory settings and require large sample volumes and days to weeks of sampling. Portable, practical, real-time nicotine monitoring devices could help to get a full understanding of the health effects of nicotine and allow researchers to measure the exposure of both vapers and those exposed via second-hand smoke.

Md. Ataur Rahman, Madhu Bhaskaran, RMIT University (Royal Melbourne Institute of Technology), Melbourne, Australia, Philipp Gutruf, University of Arizona, Tucson, USA, have developed a lightweight, battery-free, wearable sensor that can detect nicotine in real time and send the data wirelessly to electronic devices such as a smartphone. The team used vanadium dioxide (VO2) on a polyimide substrate as the basis for their sensor. They showed that nicotine can bond covalently to a thin film of VO2 and change the film's conductivity to an extent that depends on nicotine concentration. The sensor was integrated into a small, flexible, near-field communication (NFC)-enabled device that can harvest the small amounts of energy that it needs wirelessly during readout.

The device detects the change in conductivity, amplifies the signal, and then transmits it wirelessly to a smartphone. When applied to the skin, the battery-free sensor can measure the wearer's exposure to vaporized nicotine in open air. According to the researchers, this approach expands the use of wearable electronics for real-time monitoring of hazardous substances in the environment.



Article Views: 1768

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission and consult our permission guidance prior to making your request

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH