  We experimentally investigate the valley-Hall effect for interfacial edge
states, highlighting the importance of the modal patterns, between
geometrically distinct regions within a structured elastic plate. These
experiments, for vibration, are at a scale where detailed measurements are
taken throughout the system and not just at the input/output ports; this
exposes the coupling between geometrically distinct modes that underlie the
differences between wave transport around gentle and sharp bends.
