Title :

Evaporation of Binary Sessile Drops: Infrared and Acoustic Methods To Track Alcohol Concentration at the Interface and on the Surface

Author(s) :

Chen, Pin [Auteur]
Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201 [LAMIH]
Toubal, Malika [Auteur]
Carlier, Julien [Auteur]
Matériaux et Acoustiques pour MIcro et NAno systèmes intégrés - IEMN [MAMINA - IEMN]
Harmand, Souad [Auteur]
Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201 [LAMIH]
Nongaillard, Bertrand [Auteur]
Matériaux et Acoustiques pour MIcro et NAno systèmes intégrés - IEMN [MAMINA - IEMN]
Bigerelle, Maxence [Auteur]
Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201 [LAMIH]
Roberval [Roberval]

Journal title :

LANGMUIR

Pages :

9836-9845

Publisher :

American Chemical Society

Publication date :

2016-09-27

ISSN :

0743-7463

HAL domain(s) :

Sciences de l'ingénieur [physics]
Sciences de l'ingénieur [physics]/Mécanique [physics.med-ph]

English abstract : [en]

Deposited on the hydrophobic silicon, the evaporation of droplets of three pure liquids (water, 1-butanol and ethanol) and four binary solutions (5-wt% 1-butanol water-based solution and 5-wt%, 25-wt% and 50-wt% ethanol ...
Show more >Deposited on the hydrophobic silicon, the evaporation of droplets of three pure liquids (water, 1-butanol and ethanol) and four binary solutions (5-wt% 1-butanol water-based solution and 5-wt%, 25-wt% and 50-wt% ethanol water-based solutions) were investigated. A drop shape analyzer was used to measure the contact angle, diameter and volume of droplets. At the same time, an infrared camera was utilized for the infrared thermal mapping of droplet’s surface. An acoustic high frequency echography technique was, for the first time, applied to track the alcohol concentration in a binary solution droplet. The evaporations of pure alcohol droplets were executed at different values of the relative humidity, among which the behavior of pure ethanol evaporation was notably influenced by the ambient humidity as a result of high hygrometry. The evaporations of droplets of water and binary solutions were performed at a temperature of 22°C and a mean humidity of approximately 50%. The times when the alcohol exhausts in the droplets estimated by the acoustic method and the visual method were similar for water-1-butanol mixture; however, the time estimated by the acoustic method is longer compared to visual method for water-ethanol mixture due to the residual ethanol at the bottom of the dropletShow less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Comment :

JIF=3.833

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL