Complex Oscillatory Behavior of the Mercury Beating Heart System

Castillo-Rojas, Susana; Burillo, Guillermina; Vicente, Luís

doi:10.1007/s00897020558a

Cited by 7 publications

(7 citation statements)

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“…Castillo-Rojas et al had reported , that the MBH system exhibits nonlinear dynamics. The redox time series in their work shows both aperiodic and periodic oscillations.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

“…The mechanical excitations of the Hg drop have also been observed for linear and ring-shaped geometries by systematically varying the potential of the metal tip by Smolin et al They observed standing waves in a linear geometry wherein the locations of the nodes were dependent on the potential of the metal tip while the solitary waves were circulating in the ring. In the works of Castillo-Rojas et al, , the authors found self-sustained oscillations for the MBH system in an acidic solution with [Ce IV (SO 4 ) 3 ] 2– being used as the strong oxidizing agent. They reported oscillations of period-1, period-3, and period-2 periodicities in the redox potential as well as different topological configurations of the mercury drop in a watch glass geometry.…”

Section: Introductionmentioning

confidence: 99%

“…Subsequently, dynamics of the MBH system were studied experimentally − both in the presence and in the absence of an applied (external) constant potential (potentiostatic). The mechanical excitations of the Hg drop have also been observed for linear and ring-shaped geometries by systematically varying the potential of the metal tip by Smolin et al They observed standing waves in a linear geometry wherein the locations of the nodes were dependent on the potential of the metal tip while the solitary waves were circulating in the ring.…”

Section: Introductionmentioning

confidence: 99%

“…To the best of our knowledge, this is the first time that such an experimental configuration for the MBH system, in an acidic solution, has been analyzed. A set of possible reactions taking place for our system, on the basis of previous investigations, ,, has been proposed.…”

Section: Introductionmentioning

confidence: 99%

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Potential-Dependent Topological Modes in the Mercury Beating Heart System

2013

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We study the dynamics of the mercury beating heart (MBH) system in an acidic solution in the absence of a strong oxidant. Furthermore, the system is subjected to an external square wave potential. It was observed that different shapes (circular, elliptical, triangular, and multilobed stars) of the mercury drop could be stabilized as the frequency of the external potential and the volume of the mercury were varied. The redox potential time series for this forced MBH system, corresponding to the different stabilized topological configurations, were also recorded, and their power spectra were analyzed. The obtained results, involving the different topological modes, were fairly reproducible and sustainable. A possible oxidation-reduction mechanism for these experimental observations is provided.

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“…Castillo-Rojas et al had reported , that the MBH system exhibits nonlinear dynamics. The redox time series in their work shows both aperiodic and periodic oscillations.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Potential-Dependent Topological Modes in the Mercury Beating Heart System

2013

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“…The MBH phenomenon was first reported by Lippmann in 1873 . Afterward, various beating heart systems were explored extensively. − ,− The traditional MBH demonstration is carried out by placing a mercury drop onto a watch glass, and then covering it with a sulfuric acid solution. Potassium dichromate is used as an oxidizing agent. ,, When the iron nail touches the mercury drop, mechanical oscillations are triggered, thus demonstrating redox reactions in a clearly observable way.…”

Section: Introductionmentioning

confidence: 99%

Direct Current (DC) Electric Field-Enabled Beating Heart of Ga-Based Liquid Metal

Wang

Jiang

et al. 2022

J. Chem. Educ.

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Mercury beating heart (MBH) is a well-known demonstration of redox processes. However, the development and application of the MBH system are significantly restricted due to its safety issues. Here, a direct current electric field-enabled gallium-based liquid metal heartbeat in a salt solution or alkaline solution is introduced as a demonstration appropriate for undergraduate general chemistry. The former oscillation occurs on the cathode, the latter on the anode. The objective is to achieve a visually appealing effect in the classroom and motivate students to understand the underlying concepts. Students are encouraged to assemble the instrument and perform the demonstration under supervision. Apart from the gallium-based liquid metal and a helping-hand stand, the demonstration utilizes common laboratory apparatus, and the materials for the solutions can be obtained in an undergraduate general chemistry laboratory.

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A Safer Alternative for the Mercury Beating Heart Demonstration

et al. 2022

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The mercury beating heart is a classic demonstration to introduce redox reactions in the classroom. Here we report a new, safer demonstration: the Galinstan beating heart. Galinstan is a commercially available eutectic alloy composed of gallium (68.5%), indium (21.5%), and tin (10%) that has low toxicity. When an iron nail touches the Galinstan drop in a sulfuric acid solution, a steady beating heart behavior is observed. The mechanism of the Galinstan beating heart was attributed to electron transfer from the Galinstan drop to the iron nail, which induces a charge redistribution and an interfacial tension gradient on the drop.

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Complex Oscillatory Behavior of the Mercury Beating Heart System

Cited by 7 publications

References 1 publication

Potential-Dependent Topological Modes in the Mercury Beating Heart System

Potential-Dependent Topological Modes in the Mercury Beating Heart System

Direct Current (DC) Electric Field-Enabled Beating Heart of Ga-Based Liquid Metal

A Safer Alternative for the Mercury Beating Heart Demonstration

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