33 citations · 181 across the 15 of their papers we have counts for
15 papers
Controlled drop generation via ligament extraction from a static or vibrating liquid bath
Johnathan Hoggarth, Daniel M. Harris, John W. M. Bush +1
We introduce a simple method for generating droplets at the surface of a liquid bath by rapidly stretching a liquid ligament with a spring-loaded cylindrical probe. By varying the…
Drag on a partially immersed sphere at the capillary scale
Robert Hunt, Ze Zhao, Eli Silver +3
We study the drag on a centimetric sphere in a uniform flow in the presence of a free surface as a function of submergence depth. Through direct force measurements in a custom benc…
Slamming Forces During Water Entry of a Simple Harmonic Oscillator
John T. Antolik, Jesse L. Belden, Nathan B. Speirs +1
When a blunt body impacts an air-water interface, large hydrodynamic forces often arise, a phenomenon many of us have unfortunately experienced in a failed dive or "belly flop." Be…
Hydrodynamic irreversibility of non-Brownian suspensions in highly confined duct flow
John T. Antolik, Amanda Howard, Fernando Vereda +3
The irreversible behavior of a highly confined non-Brownian suspension of spherical particles at low Reynolds number in a Newtonian fluid is studied experimentally and numerically.…
Theoretical modeling of capillary surfer interactions on a vibrating fluid bath
Anand U. Oza, Giuseppe Pucci, Ian Ho +1
We present and analyze a theoretical model for the dynamics and interactions of "capillary surfers," which are millimetric objects that self-propel while floating at the interface…
Bidirectional Wave-Propelled Capillary Spinners
Jack-William Barotta, Stuart J. Thomson, Luke F. L. Alventosa +2
When a solid body floats at the interface of a vibrating liquid bath, the relative motion between the object and interface generates outwardly propagating surface waves. It has rec…
Impact of a rigid sphere onto an elastic membrane
Elvis A. Agüero, Luke Alventosa, Daniel M. Harris +1
We study the axisymmetric impact of a rigid sphere onto an elastic membrane theoretically and experimentally. We derive governing equations from first principles and impose natural…
Inertio-capillary rebound of a droplet impacting a fluid bath
Luke F. L. Alventosa, Radu Cimpeanu, Daniel M. Harris
The rebound of droplets impacting a deep fluid bath is studied both experimentally and theoretically. Millimetric drops are generated using a piezoelectric droplet-on-demand genera…
SurferBot: A wave-propelled aquatic vibrobot
Eugene Rhee, Robert Hunt, Stuart J. Thomson +1
Nature has evolved a vast array of strategies for propulsion at the air-fluid interface. Inspired by a survival mechanism initiated by the honeybee (Apis mellifera) trapped on the…
Force and torque-free helical tail robot to study low Reynolds number microorganism swimming
Asimanshu Das, Matthew Styslinger, Daniel M. Harris +1
Helical propulsion is used by many microorganisms to swim in viscous-dominated environments. Their swimming dynamics are relatively well understood, but detailed study of the flow…
Dispersion control in pressure-driven flow through bowed rectangular microchannels
Garam Lee, Alan Luner, Jeremy Marzuola +1
In fully-developed pressure-driven flow, the spreading of a dissolved solute is enhanced in the flow direction due to transverse velocity variations in a phenomenon now commonly re…
Capillary surfers: wave-driven particles at a vibrating fluid interface
Ian Ho, Giuseppe Pucci, Anand U. Oza +1
We present an experimental study of capillary surfers, a new fluid-mediated active system that bridges the gap between dissipation- and inertia-dominated regimes. Surfers are wave-…
Capillary-scale solid rebounds: experiments, modelling and simulations
Carlos A. Galeano-Rios, Radu Cimpeanu, Isabelle A. Bauman +3
A millimetre-size superhydrophobic sphere impacting on the free surface of a quiescent bath can be propelled back into the air by capillary effects and dynamic fluid forces, whilst…
Taylor dispersion of elongated rods
Ajay Harishankar Kumar, Stuart J. Thomson, Thomas R. Powers +1
Particles transported in fluid flows, such as cells, polymers, or nanorods, are rarely spherical. In this study, we numerically and theoretically investigate the dispersion of an i…
Cluster formation and self-assembly in stratified fluids: a novel mechanism for particulate aggregation
Roberto Camassa, Daniel M. Harris, Robert Hunt +2
An extremely broad and important class of phenomena in nature involves the settling and aggregation of matter under gravitation in fluid systems. Some examples include: sedimenting…