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Thermal switch of oscillation frequency in Belousov–Zhabotinsky liquid marbles

External control of oscillation dynamics in the Belousov–Zhabotinsky (BZ) reaction is important for many applications including encoding computing schemes. When considering the BZ reaction, there are limited studies dealing with thermal cycling, particularly cooling, for external control. Recently,...

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Detalles Bibliográficos
Autores principales: Adamatzky, Andrew, Fullarton, Claire, Phillips, Neil, De Lacy Costello, Ben, Draper, Thomas C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6502391/
https://www.ncbi.nlm.nih.gov/pubmed/31183147
http://dx.doi.org/10.1098/rsos.190078
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author Adamatzky, Andrew
Fullarton, Claire
Phillips, Neil
De Lacy Costello, Ben
Draper, Thomas C.
author_facet Adamatzky, Andrew
Fullarton, Claire
Phillips, Neil
De Lacy Costello, Ben
Draper, Thomas C.
author_sort Adamatzky, Andrew
collection PubMed
description External control of oscillation dynamics in the Belousov–Zhabotinsky (BZ) reaction is important for many applications including encoding computing schemes. When considering the BZ reaction, there are limited studies dealing with thermal cycling, particularly cooling, for external control. Recently, liquid marbles (LMs) have been demonstrated as a means of confining the BZ reaction in a system containing a solid–liquid interface. BZ LMs were prepared by rolling 50 μl droplets in polyethylene (PE) powder. Oscillations of electrical potential differences within the marble were recorded by inserting a pair of electrodes through the LM powder coating into the BZ solution core. Electrical potential differences of up to 100 mV were observed with an average period of oscillation ca 44 s. BZ LMs were subsequently frozen to −1°C to observe changes in the frequency of electrical potential oscillations. The frequency of oscillations reduced upon freezing to 11 mHz cf. 23 mHz at ambient temperature. The oscillation frequency of the frozen BZ LM returned to 23 mHz upon warming to ambient temperature. Several cycles of frequency fluctuations were able to be achieved.
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spelling pubmed-65023912019-06-10 Thermal switch of oscillation frequency in Belousov–Zhabotinsky liquid marbles Adamatzky, Andrew Fullarton, Claire Phillips, Neil De Lacy Costello, Ben Draper, Thomas C. R Soc Open Sci Physics External control of oscillation dynamics in the Belousov–Zhabotinsky (BZ) reaction is important for many applications including encoding computing schemes. When considering the BZ reaction, there are limited studies dealing with thermal cycling, particularly cooling, for external control. Recently, liquid marbles (LMs) have been demonstrated as a means of confining the BZ reaction in a system containing a solid–liquid interface. BZ LMs were prepared by rolling 50 μl droplets in polyethylene (PE) powder. Oscillations of electrical potential differences within the marble were recorded by inserting a pair of electrodes through the LM powder coating into the BZ solution core. Electrical potential differences of up to 100 mV were observed with an average period of oscillation ca 44 s. BZ LMs were subsequently frozen to −1°C to observe changes in the frequency of electrical potential oscillations. The frequency of oscillations reduced upon freezing to 11 mHz cf. 23 mHz at ambient temperature. The oscillation frequency of the frozen BZ LM returned to 23 mHz upon warming to ambient temperature. Several cycles of frequency fluctuations were able to be achieved. The Royal Society 2019-04-24 /pmc/articles/PMC6502391/ /pubmed/31183147 http://dx.doi.org/10.1098/rsos.190078 Text en © 2019 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.
spellingShingle Physics
Adamatzky, Andrew
Fullarton, Claire
Phillips, Neil
De Lacy Costello, Ben
Draper, Thomas C.
Thermal switch of oscillation frequency in Belousov–Zhabotinsky liquid marbles
title Thermal switch of oscillation frequency in Belousov–Zhabotinsky liquid marbles
title_full Thermal switch of oscillation frequency in Belousov–Zhabotinsky liquid marbles
title_fullStr Thermal switch of oscillation frequency in Belousov–Zhabotinsky liquid marbles
title_full_unstemmed Thermal switch of oscillation frequency in Belousov–Zhabotinsky liquid marbles
title_short Thermal switch of oscillation frequency in Belousov–Zhabotinsky liquid marbles
title_sort thermal switch of oscillation frequency in belousov–zhabotinsky liquid marbles
topic Physics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6502391/
https://www.ncbi.nlm.nih.gov/pubmed/31183147
http://dx.doi.org/10.1098/rsos.190078
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