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Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
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Domain Formations and Pattern Transitions via Instabilities in Soft Heterogeneous Materials.

Jian Li1, Tarkes Dora Pallicity2, Viacheslav Slesarenko1

  • 1Department of Aerospace Engineering, Technion-Israel Institute of Technology, Haifa, 32000, Israel.

Advanced Materials (Deerfield Beach, Fla.)
|February 15, 2019
PubMed
Summary
This summary is machine-generated.

Researchers observed domain formation and pattern transitions in soft composites. These patterns in particulate composites can be controlled by adjusting initial microstructure, offering new design possibilities.

Keywords:
domain formationsheterogeneous materialsinstabilitiespattern transitions

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Area of Science:

  • Materials Science
  • Mechanics of Materials
  • Composite Materials

Background:

  • Soft particulate composites exhibit complex microstructural behavior under large deformations.
  • Elastic instabilities drive significant changes in material microstructure.
  • Understanding these transitions is crucial for designing advanced materials.

Purpose of the Study:

  • To experimentally observe and analyze domain formation and pattern transitions in soft particulate composites.
  • To investigate the influence of initial microstructural parameters on pattern evolution.
  • To demonstrate the ability to tailor emergent patterns through controlled initial conditions.

Main Methods:

  • Experimental observation of microstructure evolution under large deformations.
  • Analysis of domain formation and pattern transitions.
  • Numerical simulations to complement experimental findings.
  • Systematic variation of initial microstructural periodicity and inclusion concentration.

Main Results:

  • Observed formation of microstructures with antisymmetric domains.
  • Documented geometrically tailored evolution into various patterns of cooperative particle rearrangements.
  • Demonstrated that emergent patterns are controllable by tuning initial periodicity and inclusion concentration.
  • Established a direct link between initial microstructure and final pattern formation.

Conclusions:

  • The study successfully demonstrates the controlled formation of specific patterns in soft particulate composites.
  • Initial microstructural parameters (periodicity, inclusion concentration) are key to tailoring emergent patterns.
  • Fine-tuning the initial microstructure provides a pathway to achieve desired, fully determined patterns in these materials.