Collective cell motility is crucial to many biological processes including morphogenesis,
wound healing, and cancer invasion. Recently, the biology and biophysics communities …

Active glassy matter has recently emerged as a novel class of non-equilibrium soft matter,
combining energy-driven, active particle movement with dense and disordered glass-like …

As an injury heals, an embryo develops or a carcinoma spreads, epithelial cells
systematically change their shape. In each of these processes cell shape is studied …

Despite the diversity of materials designated as active matter, virtually all active systems
undergo a form of dynamic arrest when crowding and activity compete, reminiscent of the …

We present an approach to understand geometric-incompatibility–induced rigidity in
underconstrained materials, including subisostatic 2D spring networks and 2D and 3D …

As developing tissues grow in size and undergo morphogenetic changes, their material
properties may be altered. Such changes result from tension dynamics at cell contacts or …

Structural defects control the kinetic, thermodynamic and mechanical properties of glasses.
For instance, rare quantum tunneling two-level systems (TLS) govern the physics of glasses …

Epithelia have distinct cellular architectures which are established in development,
reestablished after wounding, and maintained during tissue homeostasis despite cell …

Epithelial tissues act as barriers and, therefore, must repair themselves, respond to
environmental changes and grow without compromising their integrity. Consequently, they …

Fragility is an empirical property that describes how abruptly a glass-forming material
solidifies upon supercooling. The degree of fragility carries important implications for the …