While droplets typically merge instantly in an air medium, alterations to the outer medium can complicate the coalescence process. This study investigates droplet coalescence dynamics when encapsulated by a uniform liquid–solid composite shell, aiming to understand its implications for mechanical stability and merging behavior. The uniform shell around a sessile droplet is produced by using liquid marble on oil-infused surfaces (LMOI). The coalescence dynamics was studied under two different conditions: droplet with LMOI and LMOI with LMOI. In contrast to merging of bare droplets, coalescence involving at least one LMOI reveals a three-step process, including spreading, depletion, and eventual merging phases. Higher oil viscosity influences the merging process, with increased viscosity leading to delayed merging with longer spreading and depletion phases. LMOI exhibits significant resistance to merging with another LMOI, necessitating external triggers like pressure or electric fields for coalescence. These findings provide insights into designing microreactor systems based on LMOI, contributing to the comprehension of their dynamics and functionalities.
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March 2024
Research Article|
March 07 2024
Coalescence of liquid marbles on oil-infused surface Available to Purchase
Rutvik Lathia (ऋत्विक लाठिया);
Rutvik Lathia (ऋत्विक लाठिया)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Software, Validation, Writing – original draft, Writing – review & editing)
1
Centre for Nano Science and Engineering, Indian Institute of Science
, Bangalore, India
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Prerana Deshmukh (प्रेरणा देशमुख);
Prerana Deshmukh (प्रेरणा देशमुख)
(Data curation, Formal analysis, Investigation)
1
Centre for Nano Science and Engineering, Indian Institute of Science
, Bangalore, India
2
Department of Biotechnology, Indian Institute of Technology Madras
, Chennai, India
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Vinaya (विनया);
Vinaya (विनया)
(Investigation)
1
Centre for Nano Science and Engineering, Indian Institute of Science
, Bangalore, India
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Prosenjit Sen (प्रोसेनजीत सेन)
Prosenjit Sen (प्रोसेनजीत सेन)
a)
(Conceptualization, Formal analysis, Funding acquisition, Methodology, Resources, Supervision, Writing – review & editing)
1
Centre for Nano Science and Engineering, Indian Institute of Science
, Bangalore, India
a)Author to whom correspondence should be addressed: [email protected]
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Rutvik Lathia (ऋत्विक लाठिया)
1
Prerana Deshmukh (प्रेरणा देशमुख)
1,2
Vinaya (विनया)
1
Prosenjit Sen (प्रोसेनजीत सेन)
1,a)
1
Centre for Nano Science and Engineering, Indian Institute of Science
, Bangalore, India
2
Department of Biotechnology, Indian Institute of Technology Madras
, Chennai, India
a)Author to whom correspondence should be addressed: [email protected]
Physics of Fluids 36, 032110 (2024)
Article history
Received:
January 09 2024
Accepted:
February 14 2024
Citation
Rutvik Lathia, Prerana Deshmukh, Vinaya, Prosenjit Sen; Coalescence of liquid marbles on oil-infused surface. Physics of Fluids 1 March 2024; 36 (3): 032110. https://doi.org/10.1063/5.0196769
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