Femtosecond pulsed laser micromachining of glass substrates with application to microfluidic devices

Malalahalli S. Giridhar, Kibyung Seong, Axel Schülzgen, Pramod Khulbe, Nasser Peyghambarian, Masud Mansuripur

Research output: Contribution to journalReview article

73 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)4584-4589
Number of pages6
JournalApplied optics
Issue number23
StatePublished - Aug 10 2004


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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