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Electrically mediated self-assembly and manipulation of drops at an interface.
Kaneelil, Paul R; de Souza, J Pedro; Turk, Günther; Pahlavan, Amir A; Stone, Howard A.
Afiliación
  • Kaneelil PR; Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, USA. kaneelil@princeton.edu.
  • de Souza JP; Omenn-Darling Bioengineering Institute, Princeton University, Princeton, New Jersey 08544, USA.
  • Turk G; Princeton Materials Institute, Princeton University, Princeton, New Jersey 08544, USA.
  • Pahlavan AA; Department of Mechanical Engineering and Materials Science, Yale University, New Haven, Connecticut 06511, USA.
  • Stone HA; Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, USA. kaneelil@princeton.edu.
Soft Matter ; 20(27): 5417-5424, 2024 Jul 10.
Article en En | MEDLINE | ID: mdl-38946480
ABSTRACT
The fluid-fluid interface is a complex environment for a floating object where the statics and dynamics may be governed by capillarity, gravity, inertia, and other external body forces. Yet, the alignment of these forces in intricate ways may result in beautiful pattern formation and self-assembly of these objects, as in the case of crystalline order observed with bubble rafts or colloidal particles. While interfacial self-assembly has been explored widely, controlled manipulation of floating objects, e.g. drops, at the fluid-fluid interface still remains a challenge largely unexplored. In this work, we reveal the self-assembly and manipulation of water drops floating at an oil-air interface. We show that the assembly occurs due to electrostatic interactions between the drops and their environment. We highlight the role of the boundary surrounding the system by showing that even drops with a net zero electric charge can self-assemble under certain conditions. Using experiments and theory, we show that the depth of the oil bath plays an important role in setting the distance between the self-assembled drops. Furthermore, we demonstrate ways to manipulate the drops actively and passively at the interface.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Soft Matter Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Soft Matter Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Reino Unido