Soft Condensed Matter: Introduction 2004/09/21 C. T. Shih Special Topics on Soft Condensed Matters.

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Presentation transcript:

Soft Condensed Matter: Introduction 2004/09/21 C. T. Shih Special Topics on Soft Condensed Matters

What is Soft Condensed Matter? One kind of condensed matter Different from simple liquids: viscoelasticity Different from crystalline solids: lack of long range order

Examples of Soft Matters Everyday life: glues, paints, soaps... Biological materials (human body is a “ soft machine ” ) Colloidal dispersions Polymer melts/solutions Liquid crystal etc....

Characteristics of Soft Matters Length scales: intermediate between atomic sizes and macroscopic scales (e.g. tens of nanometers) Coarse-grained models may be available (omitting the details of atomic-level structures) Fluctuations and Brownian motion are important The propensity to self-assemble