We report results of extensive experimental and numerical Studies of the anisotropy of water drops deposited oil single rectangular posts of mesoscopic size sculpted on different materials. Drops of different volume deposited oil the top face of the posts assume ail elongated shape along the post direction. Systematic investigations show that while the angle measured along the direction parallel to the post does not change, the one measured across them increases monotonically with the drop volume. The difference in these two angles is found to be proportional to the contact line eccentricity even for very elongated drops, regardless of the post size and material. Results obtained with the lattice Boltzmann method are consistent with these observations and indicate useful trends on the evolution of the drop shape with the system main parameters. We argue that drops deposited oil single posts having a very sharp profile represent all ideal model system to investigate anisotropic wetting.

Anisotropy of Water Droplets on Single Rectangular Posts

MISTURA, GIAMPAOLO;ORLANDINI, ENZO;BISSACCO, GIULIANO;
2009

Abstract

We report results of extensive experimental and numerical Studies of the anisotropy of water drops deposited oil single rectangular posts of mesoscopic size sculpted on different materials. Drops of different volume deposited oil the top face of the posts assume ail elongated shape along the post direction. Systematic investigations show that while the angle measured along the direction parallel to the post does not change, the one measured across them increases monotonically with the drop volume. The difference in these two angles is found to be proportional to the contact line eccentricity even for very elongated drops, regardless of the post size and material. Results obtained with the lattice Boltzmann method are consistent with these observations and indicate useful trends on the evolution of the drop shape with the system main parameters. We argue that drops deposited oil single posts having a very sharp profile represent all ideal model system to investigate anisotropic wetting.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11577/2442217
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 42
  • ???jsp.display-item.citation.isi??? 39
social impact