Phase Behavior of Active Swimmers in Depletants: Molecular Dynamics and Integral Equation Theory

✍ Scribed by Das, Subir K.; Egorov, Sergei A.; Trefz, Benjamin; Virnau, Peter; Binder, Kurt

• Book ID: 124075070
• Publisher: The American Physical Society
• Year: 2014
• Tongue: English
• Weight: 841 KB
• Volume: 112
• Category: Article
• ISSN: 0031-9007
• DOI: 10.1103/PhysRevLett.112.198301

✦ Synopsis

We study the structure and phase behavior of a binary mixture where one of the components is selfpropelling in nature. The interparticle interactions in the system are taken from the Asakura-Oosawa model for colloid-polymer mixtures for which the phase diagram is known. In the current model version, the colloid particles are made active using the Vicsek model for self-propelling particles. The resultant active system is studied by molecular dynamics methods and integral equation theory. Both methods produce results consistent with each other and demonstrate that the Vicsek model-based activity facilitates phase separation, thus, broadening the coexistence region.