Emergent Synchronous Volumetric Oscillation in Hierarchically Structured Self-Oscillating Gel Clusters

Area of Science:

• Chemical Oscillations
• Soft Matter Physics
• Systems Biology

Background:

• Synchronization and emergent properties are key in biological systems.
• Belousov-Zhabotinsky (BZ) oscillators serve as models for studying these phenomena.
• Self-oscillating gels offer a platform to investigate emergent properties at a fundamental level.

Purpose of the Study:

• To experimentally examine synchronous and emergent properties in a self-oscillating gel system.
• To investigate how clustering influences oscillatory behavior.
• To understand the fundamental hierarchical level of synchronization and emergence.

Main Methods:

• Incorporation of acrylic acid (AAc) moieties into the gel network.
• Formation of gel clusters through hydrogen bonding in an acidic BZ substrate.
• Observation and analysis of oscillatory behavior in homogeneous and heterogeneous gel assemblies during the BZ reaction.

Main Results:

• Clustered gel assemblies (double to quadruple clusters) showed increased and synchronized periods and amplitudes during the BZ reaction.
• Homogeneous and heterogeneous gel clusters exhibited enhanced oscillatory dynamics.
• In heterogeneous clusters, initially low-amplitude gel units synchronized with higher-amplitude units, demonstrating an emergent property.

Conclusions:

• Self-oscillating gel clusters can effectively model emergent and synchronous properties observed in biological oscillators.
• The findings provide insights into the fundamental mechanisms of synchronization and emergence in hierarchical systems.
• This research may advance the understanding of biological oscillators like cardiomyocytes.