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Dielectrophoretic properties of engineered protein patterned colloidal particles.


ABSTRACT: This work determines the dielectrophoretic response of surface modified polystyrene and silica colloidal particles by experimentally measuring their Clausius-Mossotti factors. Commercial charged particles, fabricated ones coated with fibronectin, and Janus particles that have been grafted with fibronectin on one side only were investigated. We show that the dielectrophoretic response of such particles can be controlled by the modification of the chemistry or the anisotropy of their surface. Moreover, by modelling the polarizabilities of those particles, the dielectric parameters of the particles and the grafted layer of protein can be measured.

SUBMITTER: Honegger T 

PROVIDER: S-EPMC3555509 | biostudies-other | 2012

REPOSITORIES: biostudies-other

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