195 citations · 1.1k across the 51 of their papers we have counts for
26 papers · 1 filter
Active coating of a water drop by an oil film using a MHz-frequency surface acoustic wave
Avital Reizman, Amihai Horesh, Lou Kondic +1
We employ a millimeter-scale piezoelectric acoustic actuator, which generates MHz-frequency surface acoustic waves (SAWs) in a solid substrate, to actively coat a drop of water by…
Stochastic methods for slip prediction in a sheared granular system
Philip Bretz, Lou Kondic, Miro Kramar
We consider a sheared granular system experiencing intermittent dynamics of stick-slip type via discrete element simulations. The considered setup consists of a two-dimensional sys…
On intermittency in sheared granular systems
Miroslav Kramar, Chao Cheng, Rituparna Basak +1
We consider a system of granular particles, modeled by two dimensional frictional elastic disks, that is exposed to externally applied time-dependent shear stress in a planar Couet…
Network-based membrane filters: Influence of network and pore size variability on filtration performance
Binan Gu, Lou Kondic, Linda J. Cummings
We model porous membrane filters as networks of connected cylindrical pores via a random network generation protocol, and their initial pore radii via a uniform distribution of wid…
Two approaches to quantification of force networks in particulate systems
Rituparna Basak, C. Manuel Carlevaro, Ryan Kozlowski +6
The interactions between particles in particulate systems are organized in `force networks', mesoscale features that bridge between the particle scale and the scale of the system a…
Correlating the force network evolution and dynamics in slider experiments
Chao Cheng, Aghil Abed Zadeh, Lou Kondic
The experiments involving a slider moving on top of granular media consisting of photoelastic particles in two dimensions have uncovered elaborate dynamics that may vary from conti…
Effects of spatially-varying substrate anchoring on instabilities and dewetting of thin Nematic Liquid Crystal films
M. Lam, L. Kondic, L. Cummings
Partially wetting nematic liquid crystal (NLC) films on substrates are unstable to dewetting-type instabilities due to destablizing solid/NLC interaction forces. These instabilitie…
Failure of confined granular media due to pullout of an intruder: From force networks to a system wide response
Srujal Shah, Chao Cheng, Payman Jalali +1
We investigate computationally the pullout of a spherical intruder initially buried at the bottom of a granular column. The intruder starts to move out of the granular bed once the…
Intruder in a two-dimensional granular system: Effects of dynamic and static basal friction on stick-slip and clogging dynamics
C. Manuel Carlevaro, Ryan Kozlowski, Luis A. Pugnaloni +3
We discuss the results of simulations of an intruder pulled through a two-dimensional granular system by a spring, using a model designed to lend insight into the experimental find…
Dynamics of a grain-scale intruder in a two-dimensional granular medium with and without basal friction
Ryan Kozlowski, C. Manuel Carlevaro, Karen E. Daniels +5
We report on a series of experiments in which a grain-sized intruder is pushed by a spring through a 2D granular material comprised of photoelastic disks in a Couette geometry. We…
Interaction network analysis in shear thickening suspensions
Marcio Gameiro, Abhinendra Singh, Lou Kondic +2
Dense, stabilized, frictional particulate suspensions in a viscous liquid undergo increasingly strong continuous shear thickening (CST) as the solid packing fraction, , increase…
Properties of Interaction Networks in Compressed Two and Three Dimensional Particulate Systems
L. Kovalcinova, A. Taranto, L. Kondic
We consider two (2D) and three (3D) dimensional granular systems exposed to compression, and ask what is the influence of the number of physical dimensions on the properties of the…
Characterizing Granular Networks Using Topological Metrics
Joshua A. Dijksman, Lenka Kovalcinova, Jie Ren +4
We carry out a direct comparison of experimental and numerical realizations of the exact same granular system as it undergoes shear jamming. We adjust the numerical methods used to…
Stability of thin fluid films characterised by a complex form of structural/effective disjoining pressure
Michael-Angelo Y. -H. Lam, Linda J. Cummings, Lou Kondic
We discuss instabilities of fluid films of nanoscale thickness, with a particular focus on films where the destabilising mechanism allows for linear instability, metastability, and…
Evolution of force networks in dense granular matter close to jamming
Lou Kondic, Miroslav Kramar, Lenka Kovalcinova +1
When dense granular systems are exposed to external forcing, they evolve on the time scale that is typically related to the externally imposed one (shear or compression rate, for e…
Energy dissipation in sheared wet granular assemblies
L. Kovalcinova, S. Karmakar, M. Schaber +6
Energy dissipation in sheared dry and wet granulates is considered in the presence of an externally applied confining pressure. Discrete element simulations reveal that for suffici…
Granular Impact: A Grain-scale Approach
Abram H. Clark, Alec Petersen, Lou Kondic +2
This work summarizes a series of studies on two-dimensional granular impact, where an intruding object strikes a granular material at high speed. Many previous studies on granular…
Instability of nanometric fluid films on a thermally conductive substrate
Nanyi Dong, Lou Kondic
We consider thin fluid films placed on thermally conductive substrates and exposed to time-dependent spatially uniform heat source. The evolution of the films is considered within…
Steady Flow Dynamics during Granular Impact
Abram H. Clark, Lou Kondic, Robert P. Behringer
We study experimentally and computationally the dynamics of granular flow during impacts, where intruders strike a collection of disks from above. In the regime where granular forc…
Nonlinear Force Propagation during Granular Impact
Abram H. Clark, Alec J. Petersen, Lou Kondic +1
We experimentally study nonlinear force propagation into granular material during impact from an intruder, and we explain our observations in terms of the nonlinear grain-scale for…
Particle Scale Dynamics in Granular Impact
Abram. H. Clark, Lou Kondic, Robert P. Behringer
We perform an experimental study of granular impact, where intruders strike 2D beds of photoelastic disks from above. High-speed video captures the intruder dynamics and the local…
Signal propagation through dense granular systems
L. Kondic, O. M. Dybenko, R. P. Behringer
The manner in which signals propagate through dense granular systems in both space and time is not well understood. In order to learn more about this process, we carry out discrete…
Stabilization of nonlinear velocity profiles in athermal systems undergoing planar shear flow
Ning Xu, Corey S. O'Hern, Lou Kondic
We perform molecular dynamics simulations of model granular systems undergoing boundary-driven planar shear flow in two spatial dimensions with the goal of developing a more comple…
On velocity profiles, stresses and Bagnold scaling of sheared granular system in zero gravity
Oleh Baran, Lou Kondic
We report the results of three-dimensional molecular dynamics simulations of sheared granular system in a Couette geometry.\cite{movies} The simulations use realistic boundary cond…