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A Method for Simultaneous Polishing and Hydrophobization of Polycarbonate for Microfluidic Applications

Here we present a new methodology for chemical polishing of microchannels in polycarbonate (PC). Tuning the time of exposition and the concentration of ammonia, the roughness arising from the micromachining process can be significantly reduced or completely removed while preserving the structure of...

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Detalles Bibliográficos
Autores principales: Ogończyk, Dominika, Jankowski, Paweł, Garstecki, Piotr
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7692113/
https://www.ncbi.nlm.nih.gov/pubmed/33120921
http://dx.doi.org/10.3390/polym12112490
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author Ogończyk, Dominika
Jankowski, Paweł
Garstecki, Piotr
author_facet Ogończyk, Dominika
Jankowski, Paweł
Garstecki, Piotr
author_sort Ogończyk, Dominika
collection PubMed
description Here we present a new methodology for chemical polishing of microchannels in polycarbonate (PC). Tuning the time of exposition and the concentration of ammonia, the roughness arising from the micromachining process can be significantly reduced or completely removed while preserving the structure of microchannels. Besides smoothing out the surface, our method modifies the wettability of the surface, rendering it hydrophobic. The method increases the optical transparency of microchannels and eliminates undesired effects in two-phase microfluidic systems, including wetting by aqueous solutions and cross-contamination between aqueous droplets that could otherwise shed satellites via pinning.
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spelling pubmed-76921132020-11-28 A Method for Simultaneous Polishing and Hydrophobization of Polycarbonate for Microfluidic Applications Ogończyk, Dominika Jankowski, Paweł Garstecki, Piotr Polymers (Basel) Article Here we present a new methodology for chemical polishing of microchannels in polycarbonate (PC). Tuning the time of exposition and the concentration of ammonia, the roughness arising from the micromachining process can be significantly reduced or completely removed while preserving the structure of microchannels. Besides smoothing out the surface, our method modifies the wettability of the surface, rendering it hydrophobic. The method increases the optical transparency of microchannels and eliminates undesired effects in two-phase microfluidic systems, including wetting by aqueous solutions and cross-contamination between aqueous droplets that could otherwise shed satellites via pinning. MDPI 2020-10-27 /pmc/articles/PMC7692113/ /pubmed/33120921 http://dx.doi.org/10.3390/polym12112490 Text en © 2020 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
Ogończyk, Dominika
Jankowski, Paweł
Garstecki, Piotr
A Method for Simultaneous Polishing and Hydrophobization of Polycarbonate for Microfluidic Applications
title A Method for Simultaneous Polishing and Hydrophobization of Polycarbonate for Microfluidic Applications
title_full A Method for Simultaneous Polishing and Hydrophobization of Polycarbonate for Microfluidic Applications
title_fullStr A Method for Simultaneous Polishing and Hydrophobization of Polycarbonate for Microfluidic Applications
title_full_unstemmed A Method for Simultaneous Polishing and Hydrophobization of Polycarbonate for Microfluidic Applications
title_short A Method for Simultaneous Polishing and Hydrophobization of Polycarbonate for Microfluidic Applications
title_sort method for simultaneous polishing and hydrophobization of polycarbonate for microfluidic applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7692113/
https://www.ncbi.nlm.nih.gov/pubmed/33120921
http://dx.doi.org/10.3390/polym12112490
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