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Wearable Ring-Based Sensing Platform for Detecting Chemical Threats.

Juliane R Sempionatto1, Rupesh K Mishra1, Aida Martín1

  • 1Department of NanoEngineering, University of California, San Diego , La Jolla, California 92093, United States.

ACS Sensors
|October 12, 2017
PubMed
Summary

This study presents a wireless wearable chemical sensor ring for detecting explosives and nerve agents. The compact device offers rapid, multiplexed threat detection in both liquid and vapor forms.

Keywords:
electronic boardexplosivesorganophosphatesringwearable sensorwireless

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Area of Science:

  • Electrochemistry
  • Sensor Technology
  • Wearable Devices

Background:

  • Current methods for detecting chemical threats lack portability and speed.
  • Need for integrated, miniaturized sensors for real-time monitoring.

Purpose of the Study:

  • To develop a wireless wearable ring-based multiplexed chemical sensor.
  • To enable rapid electrochemical monitoring of explosive and nerve-agent threats.
  • To integrate advanced sensing capabilities into a compact, wearable platform.

Main Methods:

  • Utilized a 3D printed ring structure housing printed electrochemical sensors.
  • Integrated a miniaturized, battery-powered potentiostat for signal processing and wireless data transmission.
  • Employed fast square-wave voltammetry and chronoamperometry with interchangeable electrodes.

Main Results:

  • Demonstrated high analytical performance in a miniaturized wearable system.
  • Achieved sensitive and rapid detection of nitroaromatic and peroxide explosives.
  • Successfully performed amperometric biosensing of organophosphate (OP) nerve agents.

Conclusions:

  • The wearable sensor ring platform enables simultaneous detection of multiple chemical threats.
  • The system offers rapid monitoring in both liquid and vapor phases.
  • This technology shows promise for defense and security applications requiring real-time hazard alerts.