Download PDF by : Encyclopedia of Microfluidics and Nanofluidics

ISBN-10: 0387324682

ISBN-13: 9780387324685

Protecting all points of delivery phenomena at the nano- and micro-scale, this encyclopedia beneficial properties over 750 entries in 3 alphabetically-arranged volumes together with the main up to date study, insights, and utilized ideas throughout all parts. assurance comprises electric double-layers, optofluidics, DNC lab-on-a-chip, nanosensors, and extra.

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Extra resources for Encyclopedia of Microfluidics and Nanofluidics

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Thinner devices can be used to increase frequencies that result in increased mass sensitivity, they are more fragile and harder to manufacture and handle [5].

It detects changes in mass, elasticity, conductivity and dielectric properties from mechanical or electrical variations. These devices also employ the piezoelectric effect to excite acoustic waves electrically at an input transducer and to receive the waves at the output transducer [2]. The first scientific experiment of piezoelectricity was conducted in 1880 by Pierre and Paul Jacques Curie, who found that compression of various crystals leads to voltage production on their surface. They showed the converse effect the following year by demonstrating the elongation of certain crystals when injected with electric current.

When conductive, uncharged particles are exposed to an electric field they will polarize, inducing a dipole on the particle. The magnitude and charge orientation of the induced dipole are dependent on the permittivities and conductivities of the medium and of the particle. If the electric field is uniform the induced charges on both sides of the particle are equal, creating no net force on the particle. However, if the electric field is nonuniform (Fig. 1) there will be a net force greater than zero.

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Encyclopedia of Microfluidics and Nanofluidics


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