To grate a liquid into tiny droplets by ...
Document type :
Compte-rendu et recension critique d'ouvrage
DOI :
Title :
To grate a liquid into tiny droplets by its impact on a hydrophobic microgrid
Author(s) :
Brunet, P. [Auteur]
Lapierre, F. [Auteur]
Zoueshtiagh, Farzam [Auteur]
Thomy, Vincent [Auteur]
Merlen, Alain [Auteur]
Lapierre, F. [Auteur]
Zoueshtiagh, Farzam [Auteur]
Thomy, Vincent [Auteur]
Merlen, Alain [Auteur]
Journal title :
Applied Physics Letters
Pages :
254102
Publisher :
American Institute of Physics
Publication date :
2009
ISSN :
0003-6951
HAL domain(s) :
Physique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
Sciences de l'ingénieur [physics]/Micro et nanotechnologies/Microélectronique
Sciences de l'ingénieur [physics]/Micro et nanotechnologies/Microélectronique
English abstract : [en]
We report on experiments of drop impacting a hydrophobic micro-grid, of typical spacing a few tens of µm. Above a threshold in impact speed, liquid emerges to the other side, forming microdroplets of size about that of the ...
Show more >We report on experiments of drop impacting a hydrophobic micro-grid, of typical spacing a few tens of µm. Above a threshold in impact speed, liquid emerges to the other side, forming microdroplets of size about that of the grid holes. We propose a method to produce either a mono-disperse spray or a single tiny droplet of volume as small as a few picoliters corresponding to a volume division of the liquid drop by a factor of up to 105. We also discuss the discrepancy of the measured thresholds with that predicted by a balance between inertia and capillarityShow less >
Show more >We report on experiments of drop impacting a hydrophobic micro-grid, of typical spacing a few tens of µm. Above a threshold in impact speed, liquid emerges to the other side, forming microdroplets of size about that of the grid holes. We propose a method to produce either a mono-disperse spray or a single tiny droplet of volume as small as a few picoliters corresponding to a volume division of the liquid drop by a factor of up to 105. We also discuss the discrepancy of the measured thresholds with that predicted by a balance between inertia and capillarityShow less >
Language :
Anglais
Popular science :
Non
Source :
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