Abstract
When micron-sized particles are trapped in a linear periodic array, for example, by using optical tweezers, they interact only through the hydrodynamic forces between them. This couples the motion of the spheres and it has been predicted that an extended system might behave as an elastic medium that could support underdamped propagating waves. In practice, these underdamped modes can be observed only with massive particles in very stiff traps and very low viscosity fluids. We have been able to realize these conditions by trapping water droplets in air. Even with a system of just two particles we were able to observe the coupled oscillatory motion predicted: underdamping of the symmetric (collective) mode and overdamping of the asymmetric (relative) mode.
| Original language | English |
|---|---|
| Article number | 053007 |
| Pages (from-to) | - |
| Number of pages | 8 |
| Journal | New Journal of Physics |
| Volume | 11 |
| DOIs | |
| Publication status | Published - 19 May 2009 |
Cite this
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Underdamped modes in a hydrodynamically coupled microparticle system. / Yao, A. M.; Keen, S. A. J.; Burnham, D. R.; Leach, J.; Di Leonardo, R.; McGloin, D.; Padgett, M. J.
In: New Journal of Physics, Vol. 11, 053007, 19.05.2009, p. -.Research output: Contribution to journal › Article
TY - JOUR
T1 - Underdamped modes in a hydrodynamically coupled microparticle system
AU - Yao, A. M.
AU - Keen, S. A. J.
AU - Burnham, D. R.
AU - Leach, J.
AU - Di Leonardo, R.
AU - McGloin, D.
AU - Padgett, M. J.
PY - 2009/5/19
Y1 - 2009/5/19
N2 - When micron-sized particles are trapped in a linear periodic array, for example, by using optical tweezers, they interact only through the hydrodynamic forces between them. This couples the motion of the spheres and it has been predicted that an extended system might behave as an elastic medium that could support underdamped propagating waves. In practice, these underdamped modes can be observed only with massive particles in very stiff traps and very low viscosity fluids. We have been able to realize these conditions by trapping water droplets in air. Even with a system of just two particles we were able to observe the coupled oscillatory motion predicted: underdamping of the symmetric (collective) mode and overdamping of the asymmetric (relative) mode.
AB - When micron-sized particles are trapped in a linear periodic array, for example, by using optical tweezers, they interact only through the hydrodynamic forces between them. This couples the motion of the spheres and it has been predicted that an extended system might behave as an elastic medium that could support underdamped propagating waves. In practice, these underdamped modes can be observed only with massive particles in very stiff traps and very low viscosity fluids. We have been able to realize these conditions by trapping water droplets in air. Even with a system of just two particles we were able to observe the coupled oscillatory motion predicted: underdamping of the symmetric (collective) mode and overdamping of the asymmetric (relative) mode.
U2 - 10.1088/1367-2630/11/5/053007
DO - 10.1088/1367-2630/11/5/053007
M3 - Article
VL - 11
SP - -
JO - New Journal of Physics
JF - New Journal of Physics
SN - 1367-2630
M1 - 053007
ER -