title: Modulating DNA adsorption on silica beads using an electrical switch.
abstract: We demonstrate active tuning of DNA adsorption on silica beads using an electrical switch in a microfluidic device; we use electrolysis of water to alter pH in a packed bed of silica beads and switch the silica bead surface between being adsorptive and desorptive for DNA molecules.
authors.affiliation: Department of Agricultural and Biological Engineering, Purdue University, West Lafayette, Indiana 47907, USA.
authors.forename: Tao
authors.initials: T
authors.lastname: Geng
authors.forename: Ning
authors.initials: N
authors.lastname: Bao
authors.forename: Oren Z
authors.initials: OZ
authors.lastname: Gall
authors.forename: Chang
authors.initials: C
authors.lastname: Lu