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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,...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society
2019
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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. |
format | Online Article Text |
id | pubmed-6502391 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society |
record_format | MEDLINE/PubMed |
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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