On the derivation of Young's equation for sessile drops: Nonequilibrium effects due to evaporation

Article Abstract:

The experiments on drop evaporation were carried out to demonstrate that microdrops evaporate on a time scale of a typical contact angle experiment even in saturated atmosphere. The findings reveal that the critical volume of a drop depends on the properties of the liquid (saturation vapor pressure, molecular volume, and surface tension) and on the diffusion coefficient of its vapor in the background medium.

Analysis, Thermodynamics, Chemical properties, Elasticity, Elasticity (Mechanics), Report

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Microdrops on atomic force microscope cantilevers: Evaporation of water and spring constant calibration

Article Abstract:

The study investigated the evaporation of water drops with radii ~20 mu m experimentally by depositing them onto atomic force microscope (AFM) cantilevers and measuring the deflection versus time. It concluded that evaporation of the last thin layer of water is significantly slower than the rest of the drop, which can be due to surface forces.

Usage, Observations, Atomic force microscopy

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Evaporation of femtoliter sessile droplets monitored with nanochemical mass sensors

Article Abstract:

A time-resolved study of the evaporation in air of minuscule sessile droplets deposited by nanodispensing techniques is presented. Highly sensitive nanomechanical resonators are designed to monitor in time the mass variation of evaporating liquid droplets.

Nanoparticles

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