2014/12/31 by Rituparno Mandal, Pranab Jyoti Bhuyan, Madan Rao +1 · 4 citations
Chemistry · Materials Science · Physics and Astronomy · #Chemical physics #Chemistry #Colloid #Condensed matter physics #Fluidization #Material Dynamics and Properties #Materials science #Mechanics #Micro and Nano Robotics #Phase (matter) #Physical chemistry #Physics #Pickering emulsions and particle stabilization #Soft matter #Statistical physics #Thermodynamics #cond-mat.soft
paper · pdf · doi:10.1039/c5sm02950c
published as Soft Matter, 2016, 12, 6268 - 6276 · 8 pages, 9 figures
openalex publication_date 2016/01/01 · arxiv created 2016/07/29 · arxiv updated 2016/08/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Dense soft glasses show strong collective caging behavior at sufficiently low temperatures. Using molecular dynamics simulations of a model glass former, we show that the incorporation of activity or self-propulsion, f0, can induce cage breaking and fluidization, resulting in the disappearance of the glassy phase beyond a critical f0. The diffusion coefficient crosses over from being strongly to weakly temperature dependent as f0 is increased. In addition, we demonstrate that activity induces a crossover from a fragile to a strong glass and a tendency of active particles to cluster. Our results are of direct relevance to the collective dynamics of dense active colloidal glasses and to recent experiments on tagged particle diffusion in living cells.