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Viscous fingering instabilities in spontaneously formed blisters of MoS(2) multilayers

The viscous fingering in the Hele-Shaw cell can be suppressed by replacing the upper-bounding rigid plate with an elastic membrane. Recently, graphene multilayers while polymer-curing-induced blistering showed the dynamical evolution of viscous fingering patterns on a viscoelastic substrate due to t...

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Autores principales: Pandey, Mukesh, Ahuja, Rajeev, Kumar, Rakesh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10662142/
https://www.ncbi.nlm.nih.gov/pubmed/38024300
http://dx.doi.org/10.1039/d3na00563a
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author Pandey, Mukesh
Ahuja, Rajeev
Kumar, Rakesh
author_facet Pandey, Mukesh
Ahuja, Rajeev
Kumar, Rakesh
author_sort Pandey, Mukesh
collection PubMed
description The viscous fingering in the Hele-Shaw cell can be suppressed by replacing the upper-bounding rigid plate with an elastic membrane. Recently, graphene multilayers while polymer-curing-induced blistering showed the dynamical evolution of viscous fingering patterns on a viscoelastic substrate due to their thickness-dependent elasticity. Under certain conditions, the elastic solid-based instability couples with the viscoelastic substrate-based instability. The mechanisms underlying such a coupling in the blisters of 2D materials and the dynamical evolution of the viscous fingering patterns underneath the blisters are yet to be addressed. Herein, we investigate the viscous fingering instabilities in spontaneously formed blisters of MoS(2) multilayers, and provide thorough analytical and experimental insights for the elucidation of the dynamical evolution of the viscous fingering patterns and the coupled instabilities in the blisters. We also estimate the interfacial adhesion energy of the MoS(2) flakes over a (poly)vinyl alcohol (PVA) substrate and the confinement pressure inside the MoS(2) blisters using a conventional blister-test model. It is observed that the presence of instability gives rise to anomalies in the modeling of the blister test. The adhesion mechanical insights would be beneficial for fundamental research as well as practical applications of 2D material blisters in flexible optoelectronics.
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spelling pubmed-106621422023-10-30 Viscous fingering instabilities in spontaneously formed blisters of MoS(2) multilayers Pandey, Mukesh Ahuja, Rajeev Kumar, Rakesh Nanoscale Adv Chemistry The viscous fingering in the Hele-Shaw cell can be suppressed by replacing the upper-bounding rigid plate with an elastic membrane. Recently, graphene multilayers while polymer-curing-induced blistering showed the dynamical evolution of viscous fingering patterns on a viscoelastic substrate due to their thickness-dependent elasticity. Under certain conditions, the elastic solid-based instability couples with the viscoelastic substrate-based instability. The mechanisms underlying such a coupling in the blisters of 2D materials and the dynamical evolution of the viscous fingering patterns underneath the blisters are yet to be addressed. Herein, we investigate the viscous fingering instabilities in spontaneously formed blisters of MoS(2) multilayers, and provide thorough analytical and experimental insights for the elucidation of the dynamical evolution of the viscous fingering patterns and the coupled instabilities in the blisters. We also estimate the interfacial adhesion energy of the MoS(2) flakes over a (poly)vinyl alcohol (PVA) substrate and the confinement pressure inside the MoS(2) blisters using a conventional blister-test model. It is observed that the presence of instability gives rise to anomalies in the modeling of the blister test. The adhesion mechanical insights would be beneficial for fundamental research as well as practical applications of 2D material blisters in flexible optoelectronics. RSC 2023-10-30 /pmc/articles/PMC10662142/ /pubmed/38024300 http://dx.doi.org/10.1039/d3na00563a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Pandey, Mukesh
Ahuja, Rajeev
Kumar, Rakesh
Viscous fingering instabilities in spontaneously formed blisters of MoS(2) multilayers
title Viscous fingering instabilities in spontaneously formed blisters of MoS(2) multilayers
title_full Viscous fingering instabilities in spontaneously formed blisters of MoS(2) multilayers
title_fullStr Viscous fingering instabilities in spontaneously formed blisters of MoS(2) multilayers
title_full_unstemmed Viscous fingering instabilities in spontaneously formed blisters of MoS(2) multilayers
title_short Viscous fingering instabilities in spontaneously formed blisters of MoS(2) multilayers
title_sort viscous fingering instabilities in spontaneously formed blisters of mos(2) multilayers
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10662142/
https://www.ncbi.nlm.nih.gov/pubmed/38024300
http://dx.doi.org/10.1039/d3na00563a
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