By Dongqing Li
Covering all points of delivery phenomena at the nano- and micro-scale, this encyclopedia gains over 750 entries in 3 alphabetically-arranged volumes together with the main up to date examine, insights, and utilized suggestions throughout all components. insurance contains electric double-layers, optofluidics, DNC lab-on-a-chip, nanosensors, and more.
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Additional resources for Encyclopedia of Microfluidics and Nanofluidics
A variety of new effects could become important, such as steric effects of finite molecular sizes, viscoelectric effects, discrete electrostatic correlations, dissociation and de-solvation kinetics, and/or Faradaic electrochemical reactions passing current through the surface. In particular, Faradaic charging (as opposed to capacitive charging, described above) has been proposed to explain experimentally observed flow reversal at high voltage , although this has not yet been borne out in a complete mathematical model of ACEO.
Dielectrophoretic traps and optical dielectrophoresis can assemble groups of like particles. Electro-orientation techniques have been used to align and connect nanowires between electrodes. Functionalized particles can be implemented with dielectrophoresis Lab-on-a-Chip systems to create biological sensory or assembly systems. Dielectrophoresis, therefore, is a very versatile engineering tool. Future Directions for Research As a nonmechanical and minimally invasive process, dielectrophoresis presents as a tool to be used in Lab-ona-Chip systems to manipulate particles and cells.
B) Experimental optimization of the step height for 3D ACEO pumping of dilute KCl (reproduced from ) AC Electro-Osmotic Flow, Figure 7 (a) Collection of E. Coli bacteria in tap water along the stagnation lines of ACEO flow on Au microelectrodes at low frequency (100 Hz) and moderate voltage (1 V). (b) Preferential particle trapping by asymmetric polarization ACEO on electrodes with positive DC bias at higher voltage (> 3 V) (reproduced from ) 14 Acoustic Droplet Ejection mixing, flow fragmentation, or manipulation of colloids and cells.