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Updated: Jan 28, 2026
14:01
Making Record-efficiency SnS Solar Cells by Thermal Evaporation and Atomic Layer Deposition
Published on: May 22, 2015
43.3K
Atomic Scale Interfacial Transport at an Extended Evaporating Meniscus.
Yigit Akkus1,2, Anil Koklu1, Ali Beskok1
1Lyle School of Engineering , Southern Methodist University , Dallas , Texas 75205 , United States.
Langmuir : the ACS Journal of Surfaces and Colloids
|March 5, 2019
Summary
Theoretical modeling reveals new insights into nanoscale evaporation. Evaporation from adsorbed liquid layers increases the effective area, reducing flux estimates in nanochannels.
Area of Science:
- Nanoscale science and engineering
- Fluid dynamics and interfacial phenomena
Background:
- Advancements in fabrication enable nano- and Ångström-scale conduits.
- Experimental studies show extreme evaporation rates from capillaries.
- Theoretical modeling of nanoscale evaporating interfaces is lacking.
Purpose of the Study:
- To theoretically model evaporation from nanoscale meniscus interfaces.
- To investigate the interplay of adsorbed, transition, and intrinsic film regions.
- To understand atomic/molecular scale interfacial transport at evaporating menisci.
Main Methods:
- Development of a computational setup for nanoscale interface analysis.
- Identification of the detailed profile of a nanoscale evaporating interface.
- Analysis of lateral momentum transport and net evaporation from adsorbed liquid layers.
Main Results:
- Discovered lateral momentum transport within adsorbed liquid layers.
- Observed net evaporation from adsorbed layers, challenging equilibrium assumptions.
- Quantified the contribution of adsorbed layer evaporation to effective area and flux.
Conclusions:
- Evaporation from adsorbed layers increases the effective evaporation area.
- This contribution reduces overestimation of evaporation flux values.
- The modeling strategy enables computational studies of interfacial transport in nanoconduits.
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