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Electrokinetic Microfluidics and Nanofluidics

Part of the Fluid Mechanics and Its Applications Book Series (volume 133)

DOI: 10.1007/978-3-031-16131-5

ISBN: 978-3-031-16130-8

Publisher: Springer International Publishing - Springer Journals

Nov 19, 2022

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Basics of Interfacial Electrokinetics

Li, Dongqing

Pages: 1 –36

[All electrokinetic microfluidic and nanofluidic phenomena and processes are results of the interaction of the applied electrical field with the electrostatic surface charges or induced surface charges at the solid–liquid interfaces or liquid-fluid (liquid or gas) interfaces. The objective of...
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Induced Charge Electrokinetic Transport Phenomena

Li, Dongqing

Pages: 37 –76

[As we have discussed in Chap. 1, the electric double layer results from the interaction of the charged ions in the electrolyte solution with the electrostatic charges on a surface of an electrically non-conductive object. Consequently, the electroosmotic flow is generated by the interaction of...
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DC-Dielectrophoresis in Microfluidic Chips

Li, Dongqing

Pages: 77 –106

[Dielectrophoresis (DEP), different from electrophoresis, is the motion of a dielectric particle in a non-uniform electric field. Recall that a dielectric particle can be polarized by externally applied electric field and form a dipole, i.e., one side of the particle facing the negative electrode...
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Electroosmotic Flow and Electrophoresis in Nanochannels

Li, Dongqing

Pages: 107 –147

[Electrokinetic transport phenomena in small nanochannels can be very different from that in microchannels and larger nanochannels. This is because the size matters. Generally, as the characteristic dimension of the system decreases, the surface area to volume ratio of the flow channel increases....
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Janus Particles and Janus Droplets

Li, Dongqing

Pages: 149 –200

[This chapter will consider particles with two different hemispheres. Such heterogeneous particles will be referred as “Janus Particles”. The name ‘‘Janus’’ is from the name of a Roman God who has two faces looking into opposite directions. Here the Janus particle is considered as a sphere whose...
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Nanofluidic Iontronic Devices

Li, Dongqing

Pages: 201 –246

[Imagine an electric circuit working with water! Conventionally, we know if an electric circuit is wet by water, it will have a short circuit and be damaged. It is unlikely that electric circuit and water are working partners. However, this chapter will introduce a novel development direction of...
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Differential Resistive Pulse Sensor

Li, Dongqing

Pages: 247 –277

[This chapter introduces a novel microfluidic resistive pulse sensor for detecting micro-particles and nano-particles. The key performance indicator for any sensors is the signal-to-noise (S/N) ratio. In order to minimize the noises, a microfluidic differential resistive pulse sensor was invented...

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