title: Femtosecond pulsed laser micromachining of glass substrates with application to microfluidic devices.
abstract: We describe a technique for surface and subsurface micromachining of glass substrates by using tightly focused femtosecond laser pulses at a wavelength of 1660 nm. A salient feature of pulsed laser micromachining is its ability to drill subsurface tunnels into glass substrates. To demonstrate a potential application of this micromachining technique, we fabricate simple microfluidic structures on a glass plate. The use of a cover plate that seals the device by making point-to-point contact with the flat surface of the substrate is necessary to prevent the evaporation of liquids in open channels and chambers. Methods for protecting and sealing the micromachined structures for microfluidic applications are discussed.
authors.affiliation: Optical Sciences Center, University of Arizona, Tucson, Arizona 85721, USA.
authors.forename: Malalahalli S
authors.initials: MS
authors.lastname: Giridhar
authors.forename: Kibyung
authors.initials: K
authors.lastname: Seong
authors.forename: Axel
authors.initials: A
authors.lastname: Schülzgen
authors.forename: Pramod
authors.initials: P
authors.lastname: Khulbe
authors.forename: Nasser
authors.initials: N
authors.lastname: Peyghambarian
authors.forename: Masud
authors.initials: M
authors.lastname: Mansuripur