A model for describing parasitic phenomena in Lab-on-a-Chip, based on AC dielectrophoresis, is proposed. Parasitic phenomena are generated by gradients in conduc- tivity and permittivity that, coupled with high-strength AC electric fields, give rise to electrothermal forces, while gradients in mass density give rise to buoyancy forces. The resulting electrothermal forces cause a fluid flow motion that is calculated by analytical approximations that compare favorably with numerical solutions.
(Conference)
A model for describing parasitic phenomena in Lab-on-a-Chip, based on AC dielectrophoresis, is proposed. Parasitic phenomena are generated by gradients in conduc- tivity and permittivity that, coupled with high-strength AC electric fields, give rise to electrothermal forces, while gradients in mass density give rise to buoyancy forces. The resulting electrothermal forces cause a fluid flow motion that is calculated by analytical approximations that compare favorably with numerical solutions.
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