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Coalescence of viscous two-dimensional smectic islands
N S Shuravin1, P V Dolganov1, V K Dolganov1
1Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow Region 142432, Russia.
Physical Review. E
|July 24, 2019
Summary
Freestanding smectic films enable the study of two-dimensional (2D) coalescence. This research analyzes island coalescence in these films, confirming theoretical predictions and demonstrating scaling arguments for domain dynamics.
Area of Science:
- Materials Science
- Fluid Dynamics
- Condensed Matter Physics
Background:
- Freestanding smectic films offer a unique platform for studying two-dimensional coalescence.
- Island coalescence, driven by dislocation tension, is a key phenomenon in thin films.
Purpose of the Study:
- To experimentally investigate the coalescence of islands in freestanding smectic films.
- To analyze the dynamics of 2D coalescence in the Stokes regime and compare with theoretical models.
Main Methods:
- Experimental investigations of freestanding smectic films.
- Detailed analysis of island coalescence dynamics.
- Comparison of experimental results with theoretical predictions and scaling arguments.
Main Results:
- Experimental data confirm the driving force of island coalescence is dislocation tension.
- The study demonstrates the applicability of scaling arguments to describe domain dynamics.
- The coalescence process is accurately described by an adapted analytical solution.
Conclusions:
- Freestanding smectic films provide a viable system for studying 2D coalescence.
- Theoretical models and scaling arguments effectively describe the observed coalescence phenomena.
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