title: Ultraviolet-based bonding for perfluoropolyether low aspect-ratio microchannels and hybrid devices.
abstract: Producing solvent-resistant microfluidic devices is a challenge for analytical chemistry and biochemistry. We demonstrate a simple and low-cost fabrication approach for the realization of solvent-resistant microchannels based on perfluoropolyether elastomers, exhibiting very low aspect ratios (0.01). The strength of the microchannels sealing is evaluated through the maximum internal pressure (1.52 MPa) prior to device failure, due to delamination at the bonded interface. This approach allows the elastic properties of silicone elastomers, suitable for high quality external connections, to be combined with the non-swelling character of perfluoropolyethers.
authors.affiliation: NNL, National Nanotechnology Laboratory of CNR-INFM, Università del Salento c/o Distretto Tecnologico, and Italian Institute of Technology, via Arnesano, I-73100, Lecce, Italy.
authors.forename: Carmela
authors.initials: C
authors.lastname: De Marco
authors.forename: Salvatore
authors.initials: S
authors.lastname: Girardo
authors.forename: Elisa
authors.initials: E
authors.lastname: Mele
authors.forename: Roberto
authors.initials: R
authors.lastname: Cingolani
authors.forename: Dario
authors.initials: D
authors.lastname: Pisignano