Gel with energy dissipation in the acoustic frequency range.
Note:
A ringing gel is often a hydrogel with a surfactant as a third component and has a composition within an isotropic,
one-phase region of its ternary phase diagram.
Source:
PAC, 2007, 79, 1801
(Definitions of terms relating to the structure and processing of sols, gels, networks,
and inorganic-organic hybrid materials (IUPAC Recommendations 2007))
on page 1808