Electrowetting-on-Dielectric Behavior of Aqueous Droplets and Gold Nanofluid on an Electrospun Poly(vinyl chloride) Microfiber Layer

Morphology and wettability of dielectric layers are crucial properties that affect the electrowetting-on-dielectric (EWOD) performance of a working liquid. In this work, the use of a poly(vinyl chloride) (PVC) microfiber-modified PVC dielectric layer as an electrowetting-on-dielectric (EWOD) substra...

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Main Authors: Budlayan, Marco Laurence M., Patricio, Jonathan N., Arco, Susan D., Guerrero, Raphael
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Published: Archīum Ateneo 2024
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Online Access:https://archium.ateneo.edu/physics-faculty-pubs/165
https://doi.org/10.1088/2053-1591/ad2f7e
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spelling ph-ateneo-arc.physics-faculty-pubs-11642024-04-25T05:18:16Z Electrowetting-on-Dielectric Behavior of Aqueous Droplets and Gold Nanofluid on an Electrospun Poly(vinyl chloride) Microfiber Layer Budlayan, Marco Laurence M. Patricio, Jonathan N. Arco, Susan D. Guerrero, Raphael Morphology and wettability of dielectric layers are crucial properties that affect the electrowetting-on-dielectric (EWOD) performance of a working liquid. In this work, the use of a poly(vinyl chloride) (PVC) microfiber-modified PVC dielectric layer as an electrowetting-on-dielectric (EWOD) substrate is explored. Imaging with scanning electron and atomic force microscopy revealed intertwined microfibers on the original PVC film after PVC deposition via electrospinning. Hydrophobicity of the PVC layer was enhanced by the presence of microfibers, with the contact angle (CA) for a water droplet increasing from 84.9° to 123.9°. EWOD behavior of various liquids on the microfiber-modified PVC layer was investigated within a DC voltage range of 0 to 200 V DC. Gold nanofluid exhibited the largest change in CA of 57°, while smaller changes were observed for KOH (19.6°), KCl (21.2°), and water (21°). A mechanism explaining the observed reduction in contact angle for a gold nanofluid droplet is presented. Our results suggest the promising potential of PVC film-PVC microfiber as a hydrophobic dielectric material for EWOD applications involving diverse liquids, including gold nanofluids. 2024-03-01T08:00:00Z text https://archium.ateneo.edu/physics-faculty-pubs/165 https://doi.org/10.1088/2053-1591/ad2f7e Physics Faculty Publications Archīum Ateneo contact angle electrowetting microfibers nanofluid polymers polyvinyl chloride Fluid Dynamics Physical Sciences and Mathematics Physics
institution Ateneo De Manila University
building Ateneo De Manila University Library
continent Asia
country Philippines
Philippines
content_provider Ateneo De Manila University Library
collection archium.Ateneo Institutional Repository
topic contact angle
electrowetting
microfibers
nanofluid
polymers
polyvinyl chloride
Fluid Dynamics
Physical Sciences and Mathematics
Physics
spellingShingle contact angle
electrowetting
microfibers
nanofluid
polymers
polyvinyl chloride
Fluid Dynamics
Physical Sciences and Mathematics
Physics
Budlayan, Marco Laurence M.
Patricio, Jonathan N.
Arco, Susan D.
Guerrero, Raphael
Electrowetting-on-Dielectric Behavior of Aqueous Droplets and Gold Nanofluid on an Electrospun Poly(vinyl chloride) Microfiber Layer
description Morphology and wettability of dielectric layers are crucial properties that affect the electrowetting-on-dielectric (EWOD) performance of a working liquid. In this work, the use of a poly(vinyl chloride) (PVC) microfiber-modified PVC dielectric layer as an electrowetting-on-dielectric (EWOD) substrate is explored. Imaging with scanning electron and atomic force microscopy revealed intertwined microfibers on the original PVC film after PVC deposition via electrospinning. Hydrophobicity of the PVC layer was enhanced by the presence of microfibers, with the contact angle (CA) for a water droplet increasing from 84.9° to 123.9°. EWOD behavior of various liquids on the microfiber-modified PVC layer was investigated within a DC voltage range of 0 to 200 V DC. Gold nanofluid exhibited the largest change in CA of 57°, while smaller changes were observed for KOH (19.6°), KCl (21.2°), and water (21°). A mechanism explaining the observed reduction in contact angle for a gold nanofluid droplet is presented. Our results suggest the promising potential of PVC film-PVC microfiber as a hydrophobic dielectric material for EWOD applications involving diverse liquids, including gold nanofluids.
format text
author Budlayan, Marco Laurence M.
Patricio, Jonathan N.
Arco, Susan D.
Guerrero, Raphael
author_facet Budlayan, Marco Laurence M.
Patricio, Jonathan N.
Arco, Susan D.
Guerrero, Raphael
author_sort Budlayan, Marco Laurence M.
title Electrowetting-on-Dielectric Behavior of Aqueous Droplets and Gold Nanofluid on an Electrospun Poly(vinyl chloride) Microfiber Layer
title_short Electrowetting-on-Dielectric Behavior of Aqueous Droplets and Gold Nanofluid on an Electrospun Poly(vinyl chloride) Microfiber Layer
title_full Electrowetting-on-Dielectric Behavior of Aqueous Droplets and Gold Nanofluid on an Electrospun Poly(vinyl chloride) Microfiber Layer
title_fullStr Electrowetting-on-Dielectric Behavior of Aqueous Droplets and Gold Nanofluid on an Electrospun Poly(vinyl chloride) Microfiber Layer
title_full_unstemmed Electrowetting-on-Dielectric Behavior of Aqueous Droplets and Gold Nanofluid on an Electrospun Poly(vinyl chloride) Microfiber Layer
title_sort electrowetting-on-dielectric behavior of aqueous droplets and gold nanofluid on an electrospun poly(vinyl chloride) microfiber layer
publisher Archīum Ateneo
publishDate 2024
url https://archium.ateneo.edu/physics-faculty-pubs/165
https://doi.org/10.1088/2053-1591/ad2f7e
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