Luisa Guadalupe Cencha*, , , Alesio Nehuén Benitez, , , Nicolas Budini, , , Claudio Luis Alberto Berli, , and , Raul Urteaga,
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Directional Drying in Bilayer Porous Films: Funnel vs Ink-Bottle Geometries
We investigate the drying dynamics of mesoporous silicon bilayers with controlled pore geometries during ethanol evaporation. Using Reflective Interferometric Fourier Transform Spectroscopy (RIFTS), we track the evolution of liquid saturation in each layer. We find that placing smaller pores atop larger ones─mimicking an ink-bottle geometry─can unexpectedly accelerate evaporation under specific thickness ratios. This behavior suggests a complex interplay of mass transport mechanisms beyond simple geometrical constraints. Additionally, we introduce a novel image-based method for spatially resolved saturation mapping over millimeter-scale areas, complementing the localized RIFTS measurements. Our results demonstrate that evaporation dynamics in porous films can be modulated through structural design, providing new experimental tools to study and tailor fluid transport in hierarchical porous materials.
期刊介绍：
Langmuir is an interdisciplinary journal publishing articles in the following subject categories:
Colloids: surfactants and self-assembly, dispersions, emulsions, foams
Interfaces: adsorption, reactions, films, forces
Biological Interfaces: biocolloids, biomolecular and biomimetic materials
Materials: nano- and mesostructured materials, polymers, gels, liquid crystals
Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry
Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals
However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do?
Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*.
This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).
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