Theory of Electrode Polarization in Dielectrophoresis and Electrorotation

✍ Scribed by Reginald Paul; Karan V.I.S. Kaler

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 210 KB
• Volume: 194
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1997.5107

✦ Synopsis

field was neglected. This amounts to ignoring the influence The analysis begun in the previous paper on the role of electrode of the Stern layer. polarization in experimental measurements using dielectro-With the development of micromachining and microelecphoresis and electrorotation in a polar spherical coordinate frame is extended to include other curvilinear coordinate systems. The tronic techniques it is now possible to design electrode sys-Green functions, as derived in the previous paper in terms of the tems that can simulate many different types of inhomoge-Dyson equation, is shown to obey a variational theorem that allows neous fields and, therefore, the restrictions from the first the inclusion of the equilibrium potential and the Stern layer effect assumption must be relaxed. It is also known that the Stern neglected thus far. ᭧ 1997 Academic Press layer and its dynamics play a very important role in the Key Words: dielectrophoresis; electrorotation; electrode polardynamics and properties of the diffuse double layer. The ization; dielectrics; double layers.

method of the Green functions that was used is a very flexible method that can be adapted to different coordinate systems and in this paper we present this generalization. Moreover,