Wearable Ring-Based Sensing Platform for Detecting Chemical Threats

Journal: ACS SENSORS

Author: J. R. Sempionatto and Joseph Wang et al.

Affiliation: University of California, United States

Publication date: 2017.10.11

Summarized by Inyeol Yun

 

– Ring-based Chemical Sensor (Fig. 1)
v. Explosives (DNT, H2O2) and nerve agent (MPOx) sensor
v. Printing fabrication (Fig. 2)
v. Sensing principle: redox reaction between working electrode and chemical (Fig. 3)

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Fig. 1

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Fig. 2

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Fig. 3

 

– Materials
v. Working electrode: carbon ink (1), carbon-Prussian blue ink (2)
v. Reference, counter electrode: Ag/AgCl ink
v. All inks were purchased

 

– Result
v. Liquid-phase threat detection at the ring-based electrochemical system (Fig. 4)
v. Vapor-phase threat detection at the ring-based electrochemical system (Fig. 5)
v. Selectivity test (Fig. 6)

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Fig. 4

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Fig. 5

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Fig. 6

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