Dynamical attributes of nanocatalyzed self-oscillating reactions via bifurcation analyses

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dc.contributor.author Rajput, Vandana
dc.contributor.author Dayal, Pratyush
dc.coverage.spatial United States of America
dc.date.accessioned 2012-09-26T18:43:25Z
dc.date.available 2012-09-26T18:43:25Z
dc.date.issued 2021-08
dc.identifier.citation Rajput, Vandana and Dayal, Pratyush, "Dynamical attributes of nanocatalyzed self-oscillating reactions via bifurcation analyses", The Journal of Chemical Physics, DOI: 10.1063/5.0060509, vol. 155, no. 6, Aug. en_US
dc.identifier.issn 0021-9606
dc.identifier.issn 1089-7690
dc.identifier.uri https://doi.org/10.1063/5.0060509
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/6824
dc.description.abstract Self-oscillating chemical reactions that undergo reaction-diffusion (RD) phenomena have shown great potential for designing stimuli-responsive materials. Belousov-Zhabotinsky (BZ) reactions are one such class of reactions that exhibit nonlinear chemical oscillations due to redox cycles of the metal-ion catalyst by virtue of Hopf bifurcation. Using bifurcation analyses, here we investigate the BZ reactions, catalyzed by 0D-2D catalytic nanomats and bare nanosheets, which are known to exhibit enhanced dynamic response due to catalysts'heterogeneity. Specifically, we incorporate the nanocatalysts' activity in the kinetic model of the BZ reactions and, subsequently, use catalysts' activity as the bifurcation parameter for analyses. By computing higher-order Lyapunov and frequency coefficients, we have revealed new oscillatory regimes in the bifurcation diagram, including re-entrant regions where sustained oscillations are unexpectedly suppressed, even with high catalytic activity. In addition, we also calculate the amplitude and frequency of BZ oscillations in each of these regions as a function of nanocatalysts' activity. We believe that our current findings can be used to harness the nonlinearity of RD-based dynamical systems to provide unique functionalities to active stimuli-response systems.
dc.description.statementofresponsibility by Vandana Rajput and Pratyush Dayal
dc.format.extent vol. 155, no. 6
dc.language.iso en_US en_US
dc.publisher American Institute of Physics en_US
dc.title Dynamical attributes of nanocatalyzed self-oscillating reactions via bifurcation analyses en_US
dc.type Article en_US
dc.relation.journal The Journal of Chemical Physics

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