Nicotine Monitoring with a Wearable Sweat Band

Li Chia Tai, Christine Heera Ahn, Hnin Yin Yin Nyein, Wenbo Ji, Mallika Bariya, Yuanjing Lin, Lu Li, Ali Javey*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


The tobacco epidemic is a public health threat that has taken a heavy toll of lives around the globe each year. Smoking affects both the smokers and those who are exposed to secondhand smoke, and careful tracking of exposure can be key to mitigating the potential hazards. For smokers, the variation of chemical compositions between commercial cigarettes has led to ambiguity in estimating the health risks, both for active smokers and others involuntarily exposed to tobacco smoke and byproducts. In this regard, sweat possesses an attractive opportunity to monitor smoke exposure due to sweat's abundance in biomolecules and its great accessibility. Here, we present a wearable sweat band to monitor nicotine, a prominent ingredient in cigarettes, as a viable way to quantitatively assess a wearer's exposure to smoking. Both smokers and normal subjects are tested to demonstrate the use of this device for smoke-related health monitoring. Our results exhibit confirmable and elevated nicotine levels in sweat for subjects inhaling cigarette smoke. This continuous and personalized sweat sensing device is leverage to monitor smoke pollution for a potentially broad population.

Original languageEnglish
Pages (from-to)1831-1837
Number of pages7
JournalACS Sensors
Issue number6
StatePublished - 26 Jun 2020


  • electrochemical devices
  • flexible electronics
  • nanodendrites
  • nicotine monitoring
  • self-assembled monolayer
  • wearable sweat sensors


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