Reversionary rotation of actuated particles for microfluidic near-surface mixing

article



Derks, R.J.S.

Frijns, A.J.H.

Prins, M.W.J.

Dietzel, A.H.
The off-axis motion of particles actuated by axial magnetic or gravitational forces is studied in fluidic channels. Single actuated superparamagnetic micro-particles starting from channel walls travel towards the channel center and show unforeseen reversionary rotation phenomena. Different stages of co- and counter-rotation are observed in both micro- and macro-scale experiments and are analyzed by means of numerical fluid-dynamics models. The related microfluidic near-surface mixing performance of the rotating actuated particles is discussed. © 2011 American Institute of Physics.
Topics












Channel wallFluidic channelsGravitational forcesMacro scaleMicro-particlesMixing performanceMotion of particlesNear-surfaceOff-axisSuperparamagneticsMicrofluidicsSuperparamagnetismRotation
TNO Identifier
461443
Repository link
https://resolver.tno.nl/uuid:dabc7dda-7d32-4e10-aa37-19c6b9f64a19
ISSN
0003-6951
Source
Applied Physics Letters, 99(2)
Article nr.
No.: 024103
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