| Titre : |
Replacing the solid needle by a liquid one when measuring contact angles |
| Type de document : |
texte imprimé |
| Auteurs : |
Daniel Frese, Auteur ; Ming Jin, Auteur ; Carsten Scheithauer, Auteur ; Raymond Sanedrin, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 46-48 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Angle de contact
Mesure
Mesure -- Instruments
|
| Index. décimale : |
668.5 Parfums et cosmétiques |
| Résumé : |
Needle-deposition of sessile drops is a well-established method in contact angle analysis. However, customers regularly report user-dependent variations of contact angles as well as problems to deposit liquid drops on super-hydrophobic surfaces, or they demand higher deposition speeds. Here we present a new technique for drop deposition that is based on a Liquid Needle in contrast to a solid one. We highlight the main findings of a study where we thoroughly compared bath techniques using several different sample surfaces. We show that the resulting contact angles of droplets dosed by either technique are identical. In addition, we explain how potential pitfalls of needle-dosing - when not carried out very carefully - are eliminated by the alternative Liquid Needle dosing technique. |
| En ligne : |
https://drive.google.com/file/d/1OnlSS0APtLC_T2hAWHAh0iDkX0SIeMFD/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26761 |
in SOFW JOURNAL > Vol. 142, N° 7 (07/2016) . - p. 46-48
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