http://www.cnr.it/ontology/cnr/individuo/prodotto/ID180819

Making silicon hydrophobic: wettability control by two-lengthscale simultaneous patterning with fs-laser irradiation (Articolo in rivista)

Type

Label

Making silicon hydrophobic: wettability control by two-lengthscale simultaneous patterning with fs-laser irradiation (Articolo in rivista) (literal)

Anno

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

Alternative label

V. Zorba; L. Persano; D. Pisignano; A. Athanassiou; E. Stratakis; R. Cingolani; P. Tzanetakis; C. Fotakis (2006)
Making silicon hydrophobic: wettability control by two-lengthscale simultaneous patterning with fs-laser irradiation
in Nanotechnology (Bristol. Print); IOP Publishing Ltd. (Institute of Physics Publishing Ltd), "Bristol ; London" (Regno Unito)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

V. Zorba; L. Persano; D. Pisignano; A. Athanassiou; E. Stratakis; R. Cingolani; P. Tzanetakis; C. Fotakis (literal)

Pagina inizio

Pagina fine

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

Rivista

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

Note

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

1 Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology-Hellas (FORTH), 711 10, Heraklion, Crete, Greece 2 Physics Department, University of Crete, Heraklion 710 03, Greece 3 National Nanotechnology Laboratory (NNL) of National Research Council (CNR), Via Arnesano, 73100, Lecce, Italy 4 Materials Science and Technology Department, University of Crete, Heraklion 710 03, Greece (literal)

Titolo

Making silicon hydrophobic: wettability control by two-lengthscale simultaneous patterning with fs-laser irradiation (literal)

Abstract

We report on the wettability properties of silicon surfaces, simultaneously structured on the micrometre-scale and the nanometre-scale by femtosecond (fs) laser irradiation to render silicon hydrophobic. By varying the laser fluence, it was possible to control the wetting properties of a silicon surface through a systematic and reproducible variation of the surface roughness. In particular, the silicon-water contact angle could be increased from 66° to more than 130°. Such behaviour is described by incomplete liquid penetration within the silicon features, still leaving partially trapped air inside. We also show how controllable design and tailoring of the surface microstructures by wettability gradients can drive the motion of the drop's centre of mass towards a desired direction (even upwards). (literal)

Editore