Applications of soft matter

Applications of soft matter use materials such as polymers, gels, colloids, foams, and liquid crystals, whose structures respond readily to thermal fluctuations and modest forces.

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Liquid-crystal display: An electronic display that controls light using electrically reoriented liquid crystals. Liquid crystals turn soft-matter ordering into controllable pixels.
Viscoelasticity: Mechanical behavior combining elastic energy storage with time-dependent viscous flow. It explains why polymers and gels can both rebound and slowly deform.
Polymer: A substance made of molecules containing many covalently linked repeating units. Polymers form the basis of plastics, elastomers, fibers, and many gels.
Microfluidics: The manipulation of small fluid volumes through channels typically measured in micrometers. Soft polymers make inexpensive, shapeable chips for controlling tiny fluid samples.
Hydrogel: A water-swollen polymer network that retains its shape while holding large quantities of water. Hydrogels support contact lenses, wound dressings, and controlled drug release.
Self-assembly: The spontaneous organization of components into ordered structures through their interactions. Self-assembly creates useful nanoscale patterns without individually placing each component.
Colloidal dispersion: A system of small particles distributed through a continuous liquid or gas phase. Its particle interactions govern stability in inks, coatings, and formulations.
Tissue engineering: The design of biological substitutes that restore, maintain, or improve tissue function. Soft scaffolds can provide cells with supportive, tissue-like surroundings.
Colloid: A mixture in which particles or droplets remain dispersed through another substance without quickly settling. Colloidal stability shapes products such as paints, inks, and emulsified foods.
Surface tension: The energy cost per unit area of creating a liquid interface. Interfacial forces shape droplets, foams, coatings, and microfluidic flows.