607 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Chinese Academy of SciencesCN34 papers
- University of Chinese Academy of SciencesCN27 papers
- Fudan UniversityCN15 papers
- University of OregonUS15 papers
- Imperial College LondonGB13 papers
- Institute of High Energy PhysicsCN13 papers
- Shanghai Jiao Tong UniversityCN13 papers
- China University of Mining and Technology - Beijing11 papers
- Institute of Applied Physics and Computational MathematicsCN11 papers
- Ministry of Education of the People's Republic of ChinaCN10 papers
- Ningbo UniversityCN10 papers
- Peking UniversityCN10 papers
23 papers · 1 filter
The inconvenient truth about flocks
Leiming Chen, Patrick Jentsch, Chiu Fan Lee +3
We reanalyze the hydrodynamic theory of "flocks" that is, polar ordered "dry" active fluids in two dimensions. For "Malthusian" flocks, in which birth and death cause the density t…
Dynamics of packed swarms: time-displaced correlators of two dimensional incompressible flocks
Leiming Chen, Chiu Fan Lee, Ananyo Maitra +1
We analytically calculate the scaling exponents of a two-dimensional KPZ-like system: coherently moving incompressible polar active fluids. Using three different renormalization gr…
Hydrodynamic theory of two-dimensional incompressible polar active fluids with quenched and annealed disorder
Leiming Chen, Chiu Fan Lee, Ananyo Maitra +1
We study the moving phase of two-dimensional (2D) incompressible polar active fluids in the presence of both quenched and annealed disorder. We show that long-range polar order per…
Incompressible polar active fluids with quenched disorder in dimensions
Leiming Chen, Chiu Fan Lee, Ananyo Maitra +1
We present a hydrodynamic theory of incompressible polar active fluids with quenched disorder. This theory shows that such fluids can overcome the disruption caused by the quenched…
Packed swarms on dirt: two-dimensional incompressible flocks with quenched and annealed disorder
Leiming Chen, Chiu Fan Lee, Ananyo Maitra +1
We show that incompressible polar active fluids can exhibit an ordered, coherently moving phase even in the presence of quenched disorder in two dimensions. Unlike such active flui…
Alignment Destabilizes Crystal Orders in Active Systems
Chen Huang, Leiming Chen, Xiangjun Xing
We combine numerical and analytical methods to study two dimensional active crystals formed by permanently linked swimmers and with two distinct alignment interactions. The system…
A novel nonequilibrium state of matter: a expansion study of Malthusian flocks
Leiming Chen, Chiu Fan Lee, John Toner
We show that "Malthusian flocks" -- i.e., coherently moving collections of self-propelled entities (such as living creatures) which are being "born" and "dying" during their motion…
Moving, reproducing, and dying beyond Flatland: Malthusian flocks in dimensions
Leiming Chen, Chiu Fan Lee, John Toner
We show that "Malthusian flocks" -- i.e., coherently moving collections of self-propelled entities (such as living creatures) which are being "born" and "dying" during their motion…
Relationship between Characteristic Lengths and Effective Saffman Length in Colloidal Monolayers near a Water-Oil Interface
Na Li, Wei Zhang, Wei Chen
The hydrodynamic interactions (HIs) in colloidal monolayers are strongly influenced by the boundary conditions and can be directly described in terms of the cross-correlated diffus…
Anisotropic Characteristic Lengths of Colloidal Monolayers Near a Water-Air Interface
Na Li, Wei Zhang, Zehui Jiang +1
Near-interface colloidal monolayers have often been used as model systems for research on hydrodynamics in biophysics and microfluidic systems. Using optical microscopy and multipa…
Incompressible polar active fluids in the moving phase
Leiming Chen, Chiu Fan Lee, John Toner
We study universal behavior in the moving phase of a generic system of motile particles with alignment interactions in the incompressible limit for spatial dimensions . Using…
Squeezed in three dimensions, moving in two: Hydrodynamic theory of 3D incompressible easy-plane polar active fluids
Leiming Chen, Chiu Fan Lee, John Toner
We study the hydrodynamic behavior of three dimensional (3D) incompressible collections of self-propelled entities in contact with a momentum sink in a state with non-zero average…
Emergent smectic order in simple active particle models
Pawel Romanczuk, Hugues Chaté, Leiming Chen +2
Novel "smectic-P" behavior, in which self-propelled particles form rows and move on average along them, occurs generically within the orientationally-ordered phase of simple models…
Surprising mappings of 2D polar active fluids to 2D soap and 1D sandblasting
Leiming Chen, Chiu Fan Lee, John Toner
Active fluids and growing interfaces are two well-studied but very different non-equilibrium systems. Each exhibits non-equilibrium behavior quite different from that of their equi…
Multiple-relaxation-time lattice Boltzmann kinetic model for combustion
Aiguo Xu, Chuandong Lin, Guangcai Zhang +1
To probe both the Hydrodynamic Non-Equilibrium (HNE) and Thermodynamic Non-Equilibrium (TNE) in the combustion process, a two-dimensional Multiple-Relaxation-Time (MRT) version of…
Critical Phenomenon of the Order-Disorder Transition in Incompressible Flocks
Leiming Chen, John Toner, Chiu Fan Lee
We study incompressible systems of motile particles with alignment interactions. Unlike their compressible counterparts, in which the order-disorder (i.e., moving to static) transi…
Double-distribution-function discrete Boltzmann model for combustion
Chuandong Lin, Aiguo Xu, Guangcai Zhang +1
A 2-dimensional discrete Boltzmann model for combustion is presented. Mathematically, the model is composed of two coupled discrete Boltzmann equations for two species and a phenom…
Universality for Moving Stripes: A Hydrodynamic Theory of Polar Active Smectics
Leiming Chen, John Toner
We present a hydrodynamic theory of polar active smectics, for systems both with and without number conservation. For the latter, we find quasi long-ranged smectic order in d=2 and…
The Smectic A to C Phase Transition in Isotropic Disordered Environments
Leiming Chen, John Toner
We study theoretically the smectic A to C phase transition in isotropic disordered environments. Surprisingly, we find that, as in the clean smectic A to C phase transition, smecti…
The Smectic - Phase Transition in Biaxial Disordered Environments
Leiming Chen, John Toner
We study the smectic - phase transition in biaxial disordered environments, e.g. fully anisotropic aerogel. We find that both the and phases belong to the universalit…
Prandtl number effects in MRT Lattice Boltzmann models for shocked and unshocked compressible fluids
Feng Chen, Aiguo Xu, Guangcai Zhang +1
For compressible fluids under shock wave reaction, we have proposed two Multiple-Relaxation-Time (MRT) Lattice Boltzmann (LB) models [F. Chen, et al, EPL \textbf{90} (2010) 54003;…
Simulating liquid-vapor phase separation under shear with lattice Boltzmann method
Ce Wang, Aiguo Xu, Guangcai Zhang +1
We study liquid-vapor phase separation under shear via the Shan-Chen lattice Boltzmann model. Besides the rheological characteristics, we analyze the Kelvin-Helmholtz(K-H) instabil…
Two-Dimensional Lattice Boltzmann Model For Compressible Flows With High Mach Number
Yanbiao Gan, Aiguo Xu, Guangcai Zhang +2
In this paper we present an improved lattice Boltzmann model for compressible Navier-Stokes system with high Mach number. The model is composed of three components: (i) the discret…