10 papers
Confinement-Induced Optimization of Fluctuation-Induced Forces in Active Fluids
Reza Shaebani, Hashem Fatemi, Hamidreza Khalilian +1
Active matter generates nonequilibrium fluctuations that mediate effective interactions between immersed objects. While fluctuation-induced (FI) forces in active fluids depend on a…
Geometry-Driven Segregation in Periodically Textured Microfluidic Channels
Fatemeh S. Ahmadi, Hossein Hamzehpour, Reza Shaebani
We investigate the transport dynamics of elongated microparticles in microchannel flows. While smooth-walled channels preserve the dependence of particle trajectories on initial or…
Mechanical Interactions Govern Self-Organized Ordering in Bacterial Colonies on Surfaces
Samaneh Rahbar, Ludger Santen, Reza Shaebani
Bacterial colonies growing on surfaces are shaped by mechanical stresses transmitted through the community, governed by the balance between cell growth and steric and cell-substrat…
Convective Flows in Sheared Packings of Spherical Particles
Mehran Erfanifam, Mahnoush Madani, Reza Shaebani +1
Understanding how granular materials respond to shear stress remains a central challenge in soft matter physics. We report direct observations of persistent granular convection in…
Inferring Tree Structure with Hidden Traps from First Passage Times
Fabian H. Kreten, Ludger Santen, Reza Shaebani
Tracking the movement of tracer particles has long been a strategy for uncovering complex structures. Here, we study discrete-time random walks on finite Cayley trees to infer key…
Optimal chirality enhances long-range fluctuation-induced interactions in active fluids
Hashem Fatemi, Hamidreza Khalilian, Jalal Sarabadani +1
Understanding interactions between chiral active particles -- self-propelling and self-rotating entities -- is crucial for uncovering how chiral active matter self-organizes into d…