Chemical Resonance, Beats, and Frequency Locking in Forced Chemical Oscillatory Systems.,The Journal of Physical Chemistry Letters

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Chemical Resonance, Beats, and Frequency Locking in Forced Chemical Oscillatory Systems.
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2020-03-27 , DOI: 10.1021/acs.jpclett.0c00586
Hugh Shearer Lawson ₁ , Gábor Holló ₂ , Robert Horvath ₃ , Hiroyuki Kitahata ₄ , István Lagzi _{1,

2}

Affiliation

Resonance, beats, and synchronization are general and fundamental phenomena in physics. Their existence and their in-depth understanding in physical systems have led to several applications and technological developments shaping our world today. Here we show the existence of chemical resonance, chemical beats, and frequency locking phenomena in periodically forced pH oscillatory systems (sulfite–hydrogen peroxide and sulfite–formaldehyde–gluconolactone pH oscillatory systems). Periodic forcing was realized by a superimposed sinusoidal modulation on the inflow rates of the reagents in the continuous-flow stirred tank reactor. The dependence of the time period of beats follows the relation known from classical physics for forced physical oscillators. Our developed numerical model describes qualitatively the resonance and beat phenomena experimentally revealed. Application of periodic forcing in autonomously oscillating systems can provide new types of oscillators with a controllable frequency and new insight into controlling irregular chemical oscillation regimes.

中文翻译：

强制化学振荡系统中的化学共振、节拍和频率锁定。

共振、节拍和同步是物理学中普遍且基本的现象。它们的存在以及对物理系统的深入理解导致了多种应用和技术的发展，塑造了我们当今的世界。在这里，我们展示了周期性强制 pH 振荡系统（亚硫酸盐 - 过氧化氢和亚硫酸盐 - 甲醛 - 葡萄糖酸内酯 pH 振荡系统）中化学共振、化学拍频和锁频现象的存在。通过对连续流搅拌釜反应器中的试剂流入速率叠加正弦调制来实现周期性强迫。节拍时间周期的依赖性遵循经典物理学中已知的受迫物理振荡器的关系。我们开发的数值模型定性地描述了实验揭示的共振和拍频现象。在自主振荡系统中应用周期性力可以提供具有可控频率的新型振荡器，并为控制不规则化学振荡机制提供新的见解。

更新日期：2020-04-24

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