Planar fluidic channels on TiO2 nanoparticle coated paperboard

Dimitar Valtakari; Milena Stepien; Janne Haapanen; Hannu Teisala; Mikko Tuominen; Jurkka Kuusipalo; Jyrki M. Mäkelä; Martti Toivakka; Jarkko Saarinen

doi:10.3183/NPPRJ-2016-31-02-p232-238

Planar fluidic channels on TiO2 nanoparticle coated paperboard

Dimitar Valtakari, Milena Stepien, Janne Haapanen, Hannu Teisala, Mikko Tuominen, Jurkka Kuusipalo, Jyrki M. Mäkelä, Martti Toivakka, Jarkko Saarinen

Research output: Contribution to journal › Article › Scientific › peer-review

5 Citations (Scopus)

Abstract

A new design for permanent, low-cost, and planar fluidic channels on TiO₂ nanoparticle coated paperboard is demonstrated. Initially superhydrophobic TiO₂ nanoparticle coatings can be converted to hydrophilic by ultraviolet (UVA) light, and fluidic channels can be generated. A simple water treatment after the UVA illumination converts the channels permanent when nanoparticles are removed from the illuminated and wetted areas as shown by water contact angle, FE-SEM, XPS, and ToF-SIMS analysis. This suggests new routes for inexpensive, easy to use point-of-care diagnostics based on planar fluidic channels.

Original language	Undefined/Unknown
Pages (from-to)	232–238
Journal	Nordic Pulp and Paper Research Journal
Volume	31
Issue number	2
DOIs	https://doi.org/10.3183/NPPRJ-2016-31-02-p232-238
Publication status	Published - 2016
MoE publication type	A1 Journal article-refereed

Keywords

Wetting
TiO2
Nanoparticle
Paperboard
Liquid Flame Spray
Paper-based Microfluidics

Access to Document

10.3183/NPPRJ-2016-31-02-p232-238

https://www.npprj.se/html/np-viewarticleabstract.asp?m=10126∓=760

Cite this

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title = "Planar fluidic channels on TiO2 nanoparticle coated paperboard",

abstract = "A new design for permanent, low-cost, and planar fluidic channels on TiO2 nanoparticle coated paperboard is demonstrated. Initially superhydrophobic TiO2 nanoparticle coatings can be converted to hydrophilic by ultraviolet (UVA) light, and fluidic channels can be generated. A simple water treatment after the UVA illumination converts the channels permanent when nanoparticles are removed from the illuminated and wetted areas as shown by water contact angle, FE-SEM, XPS, and ToF-SIMS analysis. This suggests new routes for inexpensive, easy to use point-of-care diagnostics based on planar fluidic channels.",

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T1 - Planar fluidic channels on TiO2 nanoparticle coated paperboard

AU - Valtakari, Dimitar

AU - Stepien, Milena

AU - Haapanen, Janne

AU - Teisala, Hannu

AU - Tuominen, Mikko

AU - Kuusipalo, Jurkka

AU - Mäkelä, Jyrki M.

AU - Toivakka, Martti

AU - Saarinen, Jarkko

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N2 - A new design for permanent, low-cost, and planar fluidic channels on TiO2 nanoparticle coated paperboard is demonstrated. Initially superhydrophobic TiO2 nanoparticle coatings can be converted to hydrophilic by ultraviolet (UVA) light, and fluidic channels can be generated. A simple water treatment after the UVA illumination converts the channels permanent when nanoparticles are removed from the illuminated and wetted areas as shown by water contact angle, FE-SEM, XPS, and ToF-SIMS analysis. This suggests new routes for inexpensive, easy to use point-of-care diagnostics based on planar fluidic channels.

AB - A new design for permanent, low-cost, and planar fluidic channels on TiO2 nanoparticle coated paperboard is demonstrated. Initially superhydrophobic TiO2 nanoparticle coatings can be converted to hydrophilic by ultraviolet (UVA) light, and fluidic channels can be generated. A simple water treatment after the UVA illumination converts the channels permanent when nanoparticles are removed from the illuminated and wetted areas as shown by water contact angle, FE-SEM, XPS, and ToF-SIMS analysis. This suggests new routes for inexpensive, easy to use point-of-care diagnostics based on planar fluidic channels.

KW - Wetting

KW - TiO2

KW - Nanoparticle

KW - Paperboard

KW - Liquid Flame Spray

KW - Paper-based Microfluidics

KW - Wetting

KW - TiO2

KW - Nanoparticle

KW - Paperboard

KW - Liquid Flame Spray

KW - Paper-based Microfluidics

KW - Wetting

KW - TiO2

KW - Nanoparticle

KW - Paperboard

KW - Liquid Flame Spray

KW - Paper-based Microfluidics

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DO - 10.3183/NPPRJ-2016-31-02-p232-238

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EP - 238

JO - Nordic Pulp and Paper Research Journal

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ER -