title: Xurography for microfluidics on a reactive solid.
abstract: In this paper, we propose a simple method to embed transparent reactive materials in a microfluidic cell, and to observe in situ the dissolution of the material. As an example, we show how to obtain the dissolution rate of a calcite window of optical quality, dissolved in water and hydrochloric acid (HCl). These fluids circulate at controlled flowrates in a channel which is obtained by xurography: double sided tape is cut out with a cutter plotter and placed between the calcite window and a non-reactive support. While the calcite window reacts in contact with the acid, its topography is measured in situ every 10 s using an interference microscope, with a pixel resolution of 4.9 μm and a vertical resolution of 50 nm. In order to avoid inlet influence on the reaction, a thin layer of photoresist is added on the calcite surface at the inlet and outlet. This layer is also used as a non reactive reference surface.
authors.affiliation: International Research Institute of Stavanger, PO Box 8046, 4068 Stavanger, Norway. amelie.neuville@fys.uio.no and Condensed Matter Physics group, Physics Department, University of Oslo, PO Box 1048 Blindern, 0316 Oslo, Norway.
authors.forename: Amélie
authors.identifier: 0000-0003-4528-8100
authors.initials: A
authors.lastname: Neuville
authors.affiliation: Institut des Nanotechnologies de Lyon INL-UMR 5270, CNRS, Université Claude Bernard Lyon 1, Université de Lyon, 69622 Villeurbanne, France.
authors.forename: Louis
authors.initials: L
authors.lastname: Renaud
authors.affiliation: Condensed Matter Physics group, Physics Department, University of Oslo, PO Box 1048 Blindern, 0316 Oslo, Norway.
authors.forename: Thi Thuy
authors.initials: TT
authors.lastname: Luu
authors.affiliation: International Research Institute of Stavanger, PO Box 8046, 4068 Stavanger, Norway. amelie.neuville@fys.uio.no and The National IOR Centre of Norway, University of Stavanger, 4036 Stavanger, Norway.
authors.forename: Mona Wetrhus
authors.initials: MW
authors.lastname: Minde
authors.affiliation: International Research Institute of Stavanger, PO Box 8046, 4068 Stavanger, Norway. amelie.neuville@fys.uio.no.
authors.forename: Espen
authors.initials: E
authors.lastname: Jettestuen
authors.affiliation: International Research Institute of Stavanger, PO Box 8046, 4068 Stavanger, Norway. amelie.neuville@fys.uio.no.
authors.forename: Jan Ludvig
authors.initials: JL
authors.lastname: Vinningland
authors.affiliation: International Research Institute of Stavanger, PO Box 8046, 4068 Stavanger, Norway. amelie.neuville@fys.uio.no and The National IOR Centre of Norway, University of Stavanger, 4036 Stavanger, Norway.
authors.forename: Aksel
authors.initials: A
authors.lastname: Hiorth
authors.affiliation: Condensed Matter Physics group, Physics Department, University of Oslo, PO Box 1048 Blindern, 0316 Oslo, Norway.
authors.forename: Dag Kristian
authors.initials: DK
authors.lastname: Dysthe