15-20 June 2014
Laurentian University / Université Laurentienne
America/Toronto timezone
Welcome to the 2014 CAP Congress! / Bienvenue au congrès de l'ACP 2014!

Surface tension effects in soft composites

17 Jun 2014, 16:30
30m
A-226 (Laurentian University / Université Laurentienne)

A-226

Laurentian University / Université Laurentienne

Sudbury, Ontario
Invited Speaker / Conférencier invité Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) (T3-5) Biophysics/Soft Condensed Matter II: Soft Interfaces - DCMMP-DMBP / Biophysique et matière condensée molle II : Interfaces molles - DPMCM-DPMB

Speaker

Dr Robert Style (Yale University)

Description

Solid surface tension is typically ignored, but can be very important in soft solids. It acts to minimise surface area, and can significantly change how the solids behave. I will talk about its role in determining the mechanical properties of soft composites. We make soft composites by embedding small inclusions in soft gels - with the aim of understanding how the composite microstructure controls is mechanical properties. Classical theory for composite behaviour works when the inclusions are sufficiently large, but below a critical lengthscale, it breaks down: surprisingly, making small holes in a soft material can actually stiffen, rather than soften the material. I will demonstrate how these strange effects are caused by solid surface tension.

Primary author

Dr Robert Style (Yale University)

Presentation Materials