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@ARTICLE{Cencha:456316,
      author       = {Cencha, Luisa G. and Dittrich, Guido and Huber, Patrick and
                      Berli, Claudio L. A. and Urteaga, Raul},
      title        = {{P}recursor {F}ilm {S}preading during {L}iquid {I}mbibition
                      in {N}anoporous {P}hotonic {C}rystals},
      journal      = {Physical review letters},
      volume       = {125},
      number       = {23},
      issn         = {1079-7114},
      address      = {College Park, Md.},
      publisher    = {APS},
      reportid     = {PUBDB-2021-01452},
      pages        = {234502},
      year         = {2020},
      abstract     = {When a macroscopic droplet spreads, a thin precursor film
                      of liquid moves ahead of the advancing liquid-solid-vapor
                      contact line. Whereas this phenomenon has been explored
                      extensively for planar solid substrates, its presence in
                      nanostructured geometries has barely been studied so far,
                      despite its importance for many natural and technological
                      fluid transport processes. Here we use porous photonic
                      crystals in silicon to resolve by light interferometry
                      capillarity-driven spreading of liquid fronts in pores of
                      few nanometers in radius. Upon spatiotemporal rescaling the
                      fluid profiles collapse on master curves indicating that all
                      imbibition fronts follow a square-root-of-time broadening
                      dynamics. For the simple liquid (glycerol) a sharp front
                      with a widening typical of Lucas-Washburn capillary-rise
                      dynamics in a medium with pore-size distribution occurs. By
                      contrast, for a polymer (PDMS) a precursor film moving ahead
                      of the main menisci entirely alters the nature of the
                      nanoscale transport, in agreement with predictions of
                      computer simulations.},
      cin          = {DOOR ; HAS-User / FS-PS},
      ddc          = {530},
      cid          = {I:(DE-H253)HAS-User-20120731 / I:(DE-H253)FS-PS-20131107},
      pnm          = {6214 - Nanoscience and Materials for Information Technology
                      (POF3-621)},
      pid          = {G:(DE-HGF)POF3-6214},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:33337190},
      UT           = {WOS:000595043900011},
      doi          = {10.1103/PhysRevLett.125.234502},
      url          = {https://bib-pubdb1.desy.de/record/456316},
}