Nowadays understanding the link between macroscopic observables and
microscopic interactions among particles remains a key challenge in the physics of
supercooled liquids.
We developed a brand-new model class of liquids for which the interactions are
directly related to the inherent geometrical properties of Voronoi tessellations [1,2].
These so-called Voronoi liquids whose interactions are intrinsically many-body
possess new and original microscopic properties in comparison to usual pairpotential
based glass formers. These exotic features lead to non standard scaling
and thermodynamic properties which can be used as new probes to investigate the
different theoretical scenarios.
We will focus mainly here on the bidisperse Voronoi liquid tailored as to avoid
crystallization [3]. By studying this model theoretically and numerically for a wide
bunch of temperatures at constant density, we observed indeed a glass transition
which on the one hand displays the usual slowing down signatures common to all
glass formers but also quite peculiar dynamical features, notably in the crucial
mesoscopic range where unusually large relaxation times emerge.
[1] J. Farago et al. EPJE, 37, 2014 [2] C.Ruscher et al. EPL, 112, 2015 [3] C.Ruscher et al. PRE, 97, 2018 |