Transport-driven chemical oscillations: a review

Area of Science:

• Physical Chemistry
• Chemical Engineering
• Materials Science

Background:

• Chemical oscillators are crucial for understanding complex systems and designing smart materials.
• Oscillatory phenomena are typically driven by chemical reactions, but physical instabilities can also induce them.

Purpose of the Study:

• To review and classify chemical oscillatory phenomena driven by transport instabilities.
• To explore mechanisms where physical nonlinearities, rather than chemical reactions, cause dynamical complexity.
• To propose new systems and research directions for physically driven oscillations.

Main Methods:

• Literature review and classification of existing examples.
• Analysis of phenomenology, properties, and modeling of transport-induced oscillations.
• Presentation of proof-of-concept systems based on preliminary studies.

Main Results:

• Identified and categorized oscillatory phenomena originating from transport instabilities in chemical systems.
• Demonstrated that physical nonlinearities can drive chemical oscillations, broadening their applicability.
• Highlighted the common theoretical underpinnings of many physically driven oscillatory systems.

Conclusions:

• Physically driven chemical oscillations offer versatile pathways for spontaneous instabilities with broad applications.
• These phenomena can be harnessed for smart materials, synthetic functions, and addressing fundamental/applied problems.
• Further research into physically driven oscillations can impact fields from origin of life studies to environmental processes.