Chemo-Mechanical Coupling and Pattern Formation in a Complex Reaction System
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O. Steinbock
We report experimental results on the formation of macroscopic concentration patterns in the polyacrylamide-methylene blue-oxygen-sulfide (PA-MBO) reaction. The patterns have the geometry of stripes or hexagons. The latter transform to more complicated structures within the gelled medium. For the case of hexagons, the pattern wavelength (here 1-5 mm) shows a nearly proportional dependence on the height of the reaction layer. The system generates colloidal particles (average diameter 30 µm) that we use to monitor the physical changes within the medium. Our results reveal three distinct phases of particle movement. The first one is caused by hydrodynamic flows within the pre-gel solution, whereas the third, and possibly the second, phase arises from localized volume changes within the gel matrix.
Articles in the same Issue
- Fluorescence Excitation Spectrum, Lifetimes and Photoisomerization of Jet-Cooled Conformers of 1,1´-bi(benzocyclobutylidene)
- On the possibility of the Observation of Intramolecular Reaction Dynamics in Liquids by Time-resolved X-ray Scattering
- Femtosecond Fluorescence Anisotropy Kinetics as a Signature of Ultrafast Electronic Energy Transfer in Bichromophoric Molecules
- On the sudden Limit in the Capture of Particles for Long-Range Anisotropic Interactions
- Particle Entropies and Entropy Quanta. III. The van der Waals Gas
- Formation of Carbon Nanoparticle in Carbon Suboxide Pyrolysis behind Shock Waves
- Quantum Cluster Equilibrium Theory of Liquids: Isotopically substituted QCE/3-21G Model Water
- Kinematical Description of Meandering Spiral Waves in Active Media
- Chemo-Mechanical Coupling and Pattern Formation in a Complex Reaction System
- Relative Electrical Resistance of Pd Saturated by Gaseous Deuterium in a Wide Pressure Range at 298 K
- Book Reviews
Articles in the same Issue
- Fluorescence Excitation Spectrum, Lifetimes and Photoisomerization of Jet-Cooled Conformers of 1,1´-bi(benzocyclobutylidene)
- On the possibility of the Observation of Intramolecular Reaction Dynamics in Liquids by Time-resolved X-ray Scattering
- Femtosecond Fluorescence Anisotropy Kinetics as a Signature of Ultrafast Electronic Energy Transfer in Bichromophoric Molecules
- On the sudden Limit in the Capture of Particles for Long-Range Anisotropic Interactions
- Particle Entropies and Entropy Quanta. III. The van der Waals Gas
- Formation of Carbon Nanoparticle in Carbon Suboxide Pyrolysis behind Shock Waves
- Quantum Cluster Equilibrium Theory of Liquids: Isotopically substituted QCE/3-21G Model Water
- Kinematical Description of Meandering Spiral Waves in Active Media
- Chemo-Mechanical Coupling and Pattern Formation in a Complex Reaction System
- Relative Electrical Resistance of Pd Saturated by Gaseous Deuterium in a Wide Pressure Range at 298 K
- Book Reviews
