Liquid Marble Photosensor.

Autor: Adamatzky A; Unconventional Computing Laboratory, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK., Tsompanas MA; Unconventional Computing Laboratory, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK., Draper TC; Unconventional Computing Laboratory, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK., Fullarton C; Unconventional Computing Laboratory, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK., Mayne R; Unconventional Computing Laboratory, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK.; Department of Applied Sciences, University of the West of England, Coldharbour Lane, Bristol, BS16 1QY, UK.
Jazyk: angličtina
Zdroj: Chemphyschem : a European journal of chemical physics and physical chemistry [Chemphyschem] 2020 Jan 03; Vol. 21 (1), pp. 90-98. Date of Electronic Publication: 2019 Dec 09.
DOI: 10.1002/cphc.201900949
Abstrakt: A liquid marble is a liquid droplet coated by a hydrophobic powder. The liquid marble does not wet adjacent surfaces and therefore can be manipulated as a dry soft body. A Belousov-Zhabotinsky (BZ) reaction is an oscillatory chemical reaction exhibiting waves of oxidation. We demonstrate how to make a photo-sensor from BZ medium liquid marbles. We insert electrodes into a liquid marble, prepared from BZ solution and coated with polyethylene powder. The electrodes record a potential difference which oscillates due to oxidation wave-fronts crossing the electrodes. When the BZ marble is illuminated by a light source, the oxidation wave-fronts are hindered and, thus, the electrical potential recorded ceases to oscillate. We characterise several types of responses of BZ marble photosensors to various stimuli, and provide explanations of the recorded activity. BZ liquid marble photosensors may find applications in the fields of liquid electronics, soft robotics and unconventional computing.
(© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Databáze: MEDLINE
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