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Affordable Fabrication of Conductive Electrodes and Dielectric Films for a Paper-Based Digital Microfluidic Chip

In order to fabricate a digital microfluidic (DMF) chip, which requires a patterned array of electrodes coated with a dielectric film, we explored two simple methods: Ballpoint pen printing to generate the electrodes, and wrapping of a dielectric plastic film to coat the electrodes. For precise and...

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Autores principales: Soum, Veasna, Kim, Yunpyo, Park, Sooyong, Chuong, Mary, Ryu, Soo Ryeon, Lee, Sang Ho, Tanev, Georgi, Madsen, Jan, Kwon, Oh-Sun, Shin, Kwanwoo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6412519/
https://www.ncbi.nlm.nih.gov/pubmed/30736440
http://dx.doi.org/10.3390/mi10020109
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author Soum, Veasna
Kim, Yunpyo
Park, Sooyong
Chuong, Mary
Ryu, Soo Ryeon
Lee, Sang Ho
Tanev, Georgi
Madsen, Jan
Kwon, Oh-Sun
Shin, Kwanwoo
author_facet Soum, Veasna
Kim, Yunpyo
Park, Sooyong
Chuong, Mary
Ryu, Soo Ryeon
Lee, Sang Ho
Tanev, Georgi
Madsen, Jan
Kwon, Oh-Sun
Shin, Kwanwoo
author_sort Soum, Veasna
collection PubMed
description In order to fabricate a digital microfluidic (DMF) chip, which requires a patterned array of electrodes coated with a dielectric film, we explored two simple methods: Ballpoint pen printing to generate the electrodes, and wrapping of a dielectric plastic film to coat the electrodes. For precise and programmable printing of the patterned electrodes, we used a digital plotter with a ballpoint pen filled with a silver nanoparticle (AgNP) ink. Instead of using conventional material deposition methods, such as chemical vapor deposition, printing, and spin coating, for fabricating the thin dielectric layer, we used a simple method in which we prepared a thin dielectric layer using pre-made linear, low-density polyethylene (LLDPE) plastic (17-μm thick) by simple wrapping. We then sealed it tightly with thin silicone oil layers so that it could be used as a DMF chip. Such a treated dielectric layer showed good electrowetting performance for a sessile drop without contact angle hysteresis under an applied voltage of less than 170 V. By using this straightforward fabrication method, we quickly and affordably fabricated a paper-based DMF chip and demonstrated the digital electrofluidic actuation and manipulation of drops.
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spelling pubmed-64125192019-04-09 Affordable Fabrication of Conductive Electrodes and Dielectric Films for a Paper-Based Digital Microfluidic Chip Soum, Veasna Kim, Yunpyo Park, Sooyong Chuong, Mary Ryu, Soo Ryeon Lee, Sang Ho Tanev, Georgi Madsen, Jan Kwon, Oh-Sun Shin, Kwanwoo Micromachines (Basel) Article In order to fabricate a digital microfluidic (DMF) chip, which requires a patterned array of electrodes coated with a dielectric film, we explored two simple methods: Ballpoint pen printing to generate the electrodes, and wrapping of a dielectric plastic film to coat the electrodes. For precise and programmable printing of the patterned electrodes, we used a digital plotter with a ballpoint pen filled with a silver nanoparticle (AgNP) ink. Instead of using conventional material deposition methods, such as chemical vapor deposition, printing, and spin coating, for fabricating the thin dielectric layer, we used a simple method in which we prepared a thin dielectric layer using pre-made linear, low-density polyethylene (LLDPE) plastic (17-μm thick) by simple wrapping. We then sealed it tightly with thin silicone oil layers so that it could be used as a DMF chip. Such a treated dielectric layer showed good electrowetting performance for a sessile drop without contact angle hysteresis under an applied voltage of less than 170 V. By using this straightforward fabrication method, we quickly and affordably fabricated a paper-based DMF chip and demonstrated the digital electrofluidic actuation and manipulation of drops. MDPI 2019-02-07 /pmc/articles/PMC6412519/ /pubmed/30736440 http://dx.doi.org/10.3390/mi10020109 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Soum, Veasna
Kim, Yunpyo
Park, Sooyong
Chuong, Mary
Ryu, Soo Ryeon
Lee, Sang Ho
Tanev, Georgi
Madsen, Jan
Kwon, Oh-Sun
Shin, Kwanwoo
Affordable Fabrication of Conductive Electrodes and Dielectric Films for a Paper-Based Digital Microfluidic Chip
title Affordable Fabrication of Conductive Electrodes and Dielectric Films for a Paper-Based Digital Microfluidic Chip
title_full Affordable Fabrication of Conductive Electrodes and Dielectric Films for a Paper-Based Digital Microfluidic Chip
title_fullStr Affordable Fabrication of Conductive Electrodes and Dielectric Films for a Paper-Based Digital Microfluidic Chip
title_full_unstemmed Affordable Fabrication of Conductive Electrodes and Dielectric Films for a Paper-Based Digital Microfluidic Chip
title_short Affordable Fabrication of Conductive Electrodes and Dielectric Films for a Paper-Based Digital Microfluidic Chip
title_sort affordable fabrication of conductive electrodes and dielectric films for a paper-based digital microfluidic chip
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6412519/
https://www.ncbi.nlm.nih.gov/pubmed/30736440
http://dx.doi.org/10.3390/mi10020109
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