  All phases of matter, solid, liquid or gas, present some excess energy,
compared to their bulk, at their interfaces with other materials. This excess
of energy, known as the surface energy, is a fundamental property of matter and
is involved in virtually all interface problems in science, from the shape of
bubbles, crystals and biological cells to the delicate motion of some insects
on water or the fluttering of red blood cells. Because of their high cohesive
internal energies, the surface energies of solids differ fundamentally from
those of fluids and depend on the solid deformations. This effect, known as the
Shuttleworth effect, is well established for metals but is highly debated for
amorphous materials such as glasses, elastomers or biological tissues with
recent experimental results yielding strictly opposite conclusions with regards
to its very existence. Using a combination of analytical results and numerical
simulations, we show in this paper that those seemingly opposite results can be
reconciled due to the existence of an analog of the Peach-Koehler force acting
on the elastocapillary ridge and conclude that: i) there is no large
Shuttleworth effect in soft elastomers and ii) the Neumann construction does
not hold in elastowetting.
