Micro-fabricated metal nozzle plates used for water-in-oil and oil-in-water emulsification

M.J. Geerken, M.N.W. Groenendijk, Rob G.H. Lammertink, Matthias Wessling

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27 Citations (Scopus)


In this paper the fabrication and use of micro-structured metal nozzle plates as emulsification devices is investigated and discussed. These structured metal nozzle plates were fabricated via two distinct routes. Laser ablation, performed with a femtosecond laser, was used to drill micrometer-sized holes into stainless steel and aluminum foils. Also a conventional steel mesh with an average pore size of 2.4 μm fabricated by weaving and roll compaction of micrometer-sized steel wires was investigated. The perforated metal nozzle plates were used for oil-in-water and after hydrophobization with alkylchlorosilanes for water-in-oil emulsification as well. In both cases, two types of drop formation processes were observed. The first one is the shear-induced drop formation well known for cross-flow membrane emulsification. The second is the spontaneous drop formation known from microchannel emulsification.
Original languageUndefined
Pages (from-to)374-383
JournalJournal of membrane science
Issue number1-2
Publication statusPublished - 2008


  • METIS-246051
  • IR-71600

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