title: Highly sensitive contactless conductivity microchips based on concentric electrodes for flow analysis.
abstract: In this communication, we describe for the first time the integration of concentric electrodes (wrapping around the microchannel) in microchips. The use of such electrodes has been shown to be effective towards improvement of the sensitivity and detectability in pressure-driven flow platforms incorporating C(4)D.
authors.affiliation: Laboratório de Microfabricação, Laboratório Nacional de Nanotecnologia, Centro Nacional de Pesquisa em Energia e Materiais, Campinas, São Paulo, Brazil.
authors.forename: Renato S
authors.initials: RS
authors.lastname: Lima
authors.forename: Maria H O
authors.initials: MH
authors.lastname: Piazzetta
authors.forename: Angelo L
authors.initials: AL
authors.lastname: Gobbi
authors.forename: Thiago P
authors.initials: TP
authors.lastname: Segato
authors.forename: Murilo F
authors.initials: MF
authors.lastname: Cabral
authors.forename: Sergio A S
authors.initials: SA
authors.lastname: Machado
authors.forename: Emanuel
authors.initials: E
authors.lastname: Carrilho
mesh_terms: D004129:Dimethylpolysiloxanes / Q000737:chemistry; D004553:Electric Conductivity; D055664:Electrochemical Techniques / Q000295:instrumentation*; D004566:Electrodes; D017022:Flow Injection Analysis; D011312:Pressure; D012822:Silicon Dioxide / Q000737:chemistry
chemical_list: D004129:Dimethylpolysiloxanes; C528539:poly(dimethyldiphenylsiloxane); D012822:Silicon Dioxide