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Development of Whispering Gallery Mode Polymeric Micro-optical Electric Field Sensors
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Liquid Marble Photosensor.

Andrew Adamatzky1, Michail-Antisthenis Tsompanas1, Thomas C Draper1

  • 1Unconventional Computing Laboratory, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK.

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry
|November 8, 2019
PubMed
Summary
This summary is machine-generated.

Researchers created a novel photosensor using liquid marbles containing a Belousov-Zhabotinsky (BZ) reaction medium. This BZ liquid marble photosensor detects light by changes in its oscillating electrical potential, offering potential applications in soft robotics and computing.

Keywords:
Belousov-Zhabotinsky reactionchemical sensorliquid electronicsliquid marblesphotoresponse

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Area of Science:

  • Chemical reactions
  • Materials science
  • Sensor technology

Background:

  • Liquid marbles are liquid droplets coated in hydrophobic powder, allowing manipulation as dry bodies.
  • The Belousov-Zhabotinsky (BZ) reaction is a well-known oscillatory chemical reaction that produces oxidation waves.
  • Developing novel sensors with unique properties is crucial for advancements in various technological fields.

Purpose of the Study:

  • To demonstrate the fabrication of a photosensor using Belousov-Zhabotinsky (BZ) medium liquid marbles.
  • To investigate the light-sensing capabilities of these BZ liquid marble photosensors.
  • To explore potential applications of these novel sensors.

Main Methods:

  • Liquid marbles were prepared using a BZ reaction solution and coated with polyethylene powder.
  • Electrodes were inserted into the liquid marbles to record potential differences.
  • The effect of light illumination on the oscillating electrical potential of the BZ liquid marbles was characterized.

Main Results:

  • Oscillating potential differences were recorded due to oxidation wave-fronts crossing the electrodes in the BZ liquid marbles.
  • Illumination by a light source hindered the oxidation wave-fronts, causing the electrical potential oscillations to cease.
  • Various responses to different stimuli were characterized, with explanations provided for the observed electrical activity.

Conclusions:

  • BZ liquid marble photosensors can be effectively fabricated and demonstrate light-sensing capabilities.
  • The photosensor's response is based on the light-induced alteration of the BZ reaction's oscillatory behavior.
  • Potential applications include liquid electronics, soft robotics, and unconventional computing.