# Difference between revisions of "Substrate Curvature Resulting from the Capillary Forces of a Liquid Drop"

Entry by Emily Redston, AP 226, Spring 2012

Work in Progress

## Reference

Substrate curvature resulting from the capillary forces of a liquid drop by F. Spaepen. J. Mech. Phys. Solids 44, 675 – 681 (1996)

## Introduction

We typically characterize the surface of solids using two thermodynamic quantities:

• surface tension $\gamma$, which is a scalar equal to the work required to create a unit area of new interface and constant strain in the solid
• surface stress $f_{ij}$, which is a 2x2 tensor defined such that the surface work require to strain a unit surface elastically by $d {\epsilon}_{ij}$ is $f_{ij} d {\epsilon}_{ij}$