title: An integrated microfluidic biochemical detection system for protein analysis with magnetic bead-based sampling capabilities.
abstract: This paper presents the development and characterization of an integrated microfluidic biochemical detection system for fast and low-volume immunoassays using magnetic beads, which are used as both immobilization surfaces and bio-molecule carriers. Microfluidic components have been developed and integrated to construct a microfluidic biochemical detection system. Magnetic bead-based immunoassay, as a typical example of biochemical detection and analysis, has been successfully performed on the integrated microfluidic biochemical analysis system that includes a surface-mounted biofilter and electrochemical sensor on a glass microfluidic motherboard. Total time required for an immunoassay was less than 20 min including sample incubation time, and sample volume wasted was less than 50 microl during five repeated assays. Fast and low-volume biochemical analysis has been successfully achieved with the developed biofilter and immunosensor, which is integrated to the microfluidic system. Such a magnetic bead-based biochemical detection system, described in this paper, can be applied to protein analysis systems.
authors.affiliation: Department of Electrical and Computer Engineering and Computer Science, University of Cincinnati, Cincinnati, OH 45221-0030, USA. choijw@email.uc.edu
authors.forename: Jin-Woo
authors.initials: JW
authors.lastname: Choi
authors.forename: Kwang W
authors.initials: KW
authors.lastname: Oh
authors.forename: Jennifer H
authors.initials: JH
authors.lastname: Thomas
authors.forename: William R
authors.initials: WR
authors.lastname: Heineman
authors.forename: H Brian
authors.initials: HB
authors.lastname: Halsall
authors.forename: Joseph H
authors.initials: JH
authors.lastname: Nevin
authors.forename: Arthur J
authors.initials: AJ
authors.lastname: Helmicki
authors.forename: H Thurman
authors.initials: HT
authors.lastname: Henderson
authors.forename: Chong H
authors.initials: CH
authors.lastname: Ahn
mesh_terms: D004563:Electrochemistry; D007118:Immunoassay; D008280:Magnetics; D044085:Microfluidics / Q000295:instrumentation*; D011506:Proteins / Q000032:analysis*; D018511:Systems Integration
chemical_list: D011506:Proteins