Magnetism and Microfluidics

Algebraic Equations (DAEs) in a system repre- Magnetic field-based microfluidic devices sentation and describe the dynamic response of Microfluidics and magnetism the system. 

Magnetic field-based microfluidic devices Microfluidics and magnetism... 

M. A.M. Gijs Magnetic bead handling on-chip new opportunihes for analytical applicahons. Microfluidics and Nanoflnidics 1, 22 0 (2004)... 

F. Lacharme, C. Vandevyver, and M.A.M. Gijs Magnetic beads retention device for sandwich immunoassay comparison of off-chip and on-chip antibody incubation Microfluidics and Nanofluidics 479 87 (2009)... 

N.T. Nguyen, A. Beyzavi, K.M. Ng, and X.Y. Huang Kinematics and deformation of ferrofluid droplets under magnetic actuation Microfluidics and Nanofluidics 3, 571-579 (2007). 

The indirect methods include ultrasonic Doppler, magnetic resonance imaging (MRI) and thermal anemometry, which measure the shear stress indirectly by correlating this parameter to flow rate. The ultrasonic Doppler method and MRI are non-invasive however, the spatial resolution near the wall is not as good. Another indirect method is to correlate shear stress with convective cooling of a heated element based on the heat transfer principle. The advent of MEMS technology has made possible advances in microfluidics and biomedical applications. The advantages of MEMS thermal anemometry are twofold ... 

Regiart, M., Ferndndez-Baldo, M.A., Spotorno, V.G. et al. (2013) Ultra sensitive microfluidic immunosensor for determination of clenbuterol in bovine hair samples using electrodeposited gold nanoparticles and magnetic micro particles as bio-affinity platform. Biosens. Bioelectron., 41,211-217. 

Wang, Y, Ye, Z., Ping, J., Jing, S., Ying, Y., 2014b. Development of an aptamer-based impedi-metric bioassay using microfluidic system and magnetic separation for protein detection. Biosensors and Bioelectronics 59,106-111. 

The assessment of RBCs deformability can also be performed by active methods, through the application of external force fields, such as acoustic, optical, electrical, and magnetic ones. Acoustic radiation force has been reported for fast and direct measurement of the mechanical properties of cells in a microfluidic chip. This method is based on the formation of an acoustic standing wave within a straight microchannel that moves the cells to the acoustic pressure nodes, with a movement speed dependent on the compressibility (Hartono et al., 2011). 

Flexible electronic devices are increasingly capturing the attention of researchers in radio frequency (RF) technologies and metamaterials physics, and are not limited to electronics applications such as light emitting diodes (7). These devices are driven by the pliable, conformal, and stretchable characteristics of elastomeric substrates [7-13], Examples of RF and terahertz devices demonstrated on flexible device platforms include curved antennas [12], millimeter-wave patch flexible antennas and coupled line filters [13], coplanar waveguide antenna [14], stretchable microfluidic RF antenna [15], frequency selective surfaces and metamaterials [8], microwave frequency switches [16], tunable metamaterials [17, 18], and tunable dielectric and magnetic properties [10]. 

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