Title :
Two dimensional magnetic manipulation of microdroplets on a chip
Author :
Lehmann, U. ; Hadjidj, S. ; Parashar, V.K. ; Rida, A. ; Gijs, M.A.M.
Author_Institution :
Inst. of Microelectron. & Microsystems, Ecole Polytech. Fed. de Lausanne, Switzerland
Abstract :
In this paper we describe the two-dimensional (2D) magnetic manipulation of aqueous droplets suspended in silicone oil over the chip surface. The magnetic actuation is based on the force imposed on superparamagnetic microparticles inside the droplets. These can be displaced, merged, mixed and separated by changing the topology of the magnetic field created by a multilayer set of coils. The magnetic manipulation forces are generated on our chip without the use of external moving magnets. Our results demonstrate the potential of the proposed system in droplet-based biomedical analysis methods on a chip.
Keywords :
biomedical engineering; drops; magnetic multilayers; microactuators; microfluidics; silicones; superparamagnetism; 2D magnetic manipulation; aqueous droplets; chip surface; droplet-based biomedical analysis; magnetic actuation; microdroplets; multilayer coils; silicone oil; superparamagnetic microparticles; two dimensional magnetic manipulation; Coils; Magnetic analysis; Magnetic fields; Magnetic levitation; Magnetic multilayers; Magnetic separation; Magnets; Petroleum; Topology; Two dimensional displays;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05. The 13th International Conference on
Print_ISBN :
0-7803-8994-8
DOI :
10.1109/SENSOR.2005.1496363
