Belousov-Zhabotinsky reaction in liquid marbles

Fullarton, C; Draper, TC; Phillips, N; de Lacy Costello, BPJ; Adamatzky, A

Abstract

In Belousov–Zhabotinsky (BZ) type reactions, chemical oxidation waves can be exploited to produce reaction-diffusion processors. This paper reports on a new method of encapsulating BZ solution in a powder coating of either polyethylene (PE) or polytetrafluoroethylene (PTFE), to produce BZ liquid marbles (LMs). BZ LMs have solid-liquid interfaces compared to previously reported encapsulation systems, BZ emulsions and BZ vesicles. Oscillation studies on individual LMs established PE-coated LMs were easier to prepare and more robust than PTFE-coated LMs. Therefore, this coating was used to study BZ LMs positioned in ordered and disordered arrays. Sporadic transfer of excitation waves was observed between LMs in close proximity to each other. These results lay the foundations for future studies on information transmission and processing arrays of BZ LMs. Future work aims to elucidate the effect of other physical stimuli on the dynamics of chemical excitation waves within
these systems.

• Journal Article Type: Article
• Acceptance Date: Nov 1, 2018
• Deposit Date: Nov 16, 2018
• Publicly Available Date: Nov 16, 2018
• Journal: Journal of Physics: Materials
• Print ISSN: 2515-7639
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 2
• Issue: 1
• DOI: https://doi.org/10.1088/2515-7639/aaed4c
• Keywords: liquid marbles, Belousov-Zhabotinsky (BZ) reaction, chemical excitation wave propagation
• Public URL: https://uwe-repository.worktribe.com/output/853767
• Publisher URL: http://dx.doi.org/10.1088/2515-7639/aaed4c
• Related Public URLs: http://iopscience.iop.org/article/10.1088/2515-7639/aaed4c
• Contract Date: Nov 16, 2018