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Fluid flow control in cotton threads with mesoporous silica coatings

Mikolei, Joanna J. ; Stanzel, Mathias ; Pardehkorram, Raheleh ; Lehn, Robert ; Ceolin, Marcelo ; Andrieu‐Brunsen, Annette (2023)
Fluid flow control in cotton threads with mesoporous silica coatings.
In: Advanced Materials Interfaces, 10 (21)
doi: 10.1002/admi.202300211
Article, Bibliographie

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Abstract

Microfluidic devices are important, e.g. in the field of point of care diagnostics. They are of special importance, if they are fabricated out of cheap and renewable materials. Tackling complex separation or sensing problems profits from modular three‐dimensional fluidic devices. Using cotton threads as renewable material allows the modular design of three‐dimensional fluidic devices and networks. Here, fluidic threads with modular designed and tunable thread wettability are presented. The wettability is gradually adjusted from highly hydrophilic to hydrophobic. The thread wettability directly affects the fluid imbibition velocity as well as the distance, which the fluid imbibes into the thread. The wettability adjustment is based on a simple dense or mesoporous silica coating applied onto the cotton thread using sol‐gel chemistry and evaporation induced self‐assembly. In addition to wettability, the mesoporosity and the pore functionalization are used to tune the fluid velocity within the thread. Connecting different silica functionalized threads into one device by knotting them together, fluids can be guided through this network in a predicted manner, which allows a modular design of 3D microfluidic thread‐based devices.

Item Type: Article
Erschienen: 2023
Creators: Mikolei, Joanna J. ; Stanzel, Mathias ; Pardehkorram, Raheleh ; Lehn, Robert ; Ceolin, Marcelo ; Andrieu‐Brunsen, Annette
Type of entry: Bibliographie
Title: Fluid flow control in cotton threads with mesoporous silica coatings
Language: English
Date: 2023
Place of Publication: Weinheim
Publisher: Wiley-VCH
Journal or Publication Title: Advanced Materials Interfaces
Volume of the journal: 10
Issue Number: 21
Collation: 9 Seiten
DOI: 10.1002/admi.202300211
Corresponding Links:
Abstract:

Microfluidic devices are important, e.g. in the field of point of care diagnostics. They are of special importance, if they are fabricated out of cheap and renewable materials. Tackling complex separation or sensing problems profits from modular three‐dimensional fluidic devices. Using cotton threads as renewable material allows the modular design of three‐dimensional fluidic devices and networks. Here, fluidic threads with modular designed and tunable thread wettability are presented. The wettability is gradually adjusted from highly hydrophilic to hydrophobic. The thread wettability directly affects the fluid imbibition velocity as well as the distance, which the fluid imbibes into the thread. The wettability adjustment is based on a simple dense or mesoporous silica coating applied onto the cotton thread using sol‐gel chemistry and evaporation induced self‐assembly. In addition to wettability, the mesoporosity and the pore functionalization are used to tune the fluid velocity within the thread. Connecting different silica functionalized threads into one device by knotting them together, fluids can be guided through this network in a predicted manner, which allows a modular design of 3D microfluidic thread‐based devices.

Uncontrolled Keywords: microfluidic in threads, nanopore functionalization, nanopores, silica coatings, sol‐gel‐chemistry, surface modification
Identification Number: 2300211
Classification DDC: 500 Science and mathematics > 540 Chemistry
Divisions: 07 Department of Chemistry
07 Department of Chemistry > Ernst-Berl-Institut > Fachgebiet Makromolekulare Chemie
Date Deposited: 23 Jan 2024 08:55
Last Modified: 23 Jan 2024 08:55
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