Engineering Interfacial Processes at Mini-Micro-Nano Scales Using Sessile Droplet Architecture

Langmuir : the ACS Journal of Surfaces and Colloids
Lalit BansalSaptarshi Basu

Abstract

Evaporating sessile functional droplets act as the fundamental building block that controls the cumulative outcome of many industrial and biological applications such as surface patterning, 3D printing, photonic crystals, and DNA sequencing, to name a few. Additionally, a drying single sessile droplet forms a high-throughput processing technique using low material volume which is especially suitable for medical diagnosis. A sessile droplet also provides an elementary platform to study and analyze fundamental interfacial processes at various length scales ranging from macroscopically observable wetting and evaporation to microfluidic transport to interparticle forces operating at a nanometric length scale. As an example, to ascertain the quality of 3D printing we must understand the fundamental interfacial processes at the droplet scale. In this article, we review the coupled physics of evaporation flow-contact-line-driven particle transport in sessile colloidal droplets and provide methodologies to control the same. Through natural alterations in droplet vaporization, one can change the evaporative pattern and contact line dynamics leading to internal flow which will modulate the final particle assembly in a nontrivial fashion....Continue Reading

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Citations

Aug 31, 2019·Nanoscale·Lei Wang, Jianying Wang
Jan 22, 2021·The Journal of Physical Chemistry. B·Rocío GimenezMartín G Bellino
Feb 13, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Melike Begum Tanis-KanburFei Duan
Jan 24, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Prasenjit KabiSaptarshi Basu
Sep 27, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Prasenjit KabiSaptarshi Basu

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