A5008132850- Surface Modification and Superhydrophobicity
- Electrohydrodynamics and Fluid Dynamics
- Adhesion, Friction, and Surface Interactions
- Aerosol Filtration and Electrostatic Precipitation
- Fluid Dynamics and Heat Transfer
- Material Properties and Processing
- Icing and De-icing Technologies
- Plasma Diagnostics and Applications
- Plasma Applications and Diagnostics
- Advanced Cellulose Research Studies
- nanoparticles nucleation surface interactions
- Pickering emulsions and particle stabilization
- Advanced Photocatalysis Techniques
- Nanocomposite Films for Food Packaging
- Tribology and Wear Analysis
- Catalytic Processes in Materials Science
- TiO2 Photocatalysis and Solar Cells
- Diamond and Carbon-based Materials Research
- Flame retardant materials and properties
- Copper Interconnects and Reliability
- Nanomaterials and Printing Technologies
- Advanced Data Storage Technologies
- High-Temperature Coating Behaviors
- Polymer Nanocomposites and Properties
- Gold and Silver Nanoparticles Synthesis and Applications
RISE Research Institutes of Sweden
2017-2024
Tampere University
2008-2018
Tampere University of Applied Sciences
2010-2017
University of Borås
2016
Pulp and Paper Research Institute
2010
VTT Technical Research Centre of Finland
1980
Wettability of a solid surface by liquid plays an important role in several phenomena and applications, for example adhesion, printing, self‐cleaning. In particular, wetting rough surfaces has attracted great scientific interest recent decades. Superhydrophobic surfaces, which possess extraordinary water repelling properties due to their low energy specific nanometer‐ micrometer‐scale roughness, are particular the variety potential applications ranging from self‐cleaning microfluidic...
Hierarchical roughness is known to effectively reduce the liquid-solid contact area and water droplet adhesion on superhydrophobic surfaces, which can be seen for example in combination of submicrometer micrometer scale structures lotus leaf. The fine structures, are often referred as nanostructures literature, have an important role phenomenon superhydrophobicity low adhesion. Although generally termed nanostructures, their actual dimensions at hundreds nanometers. Here we demonstrate that...
Paper-based devices provide an alternative technology for simple, low-cost, portable, and disposable diagnostic tools many applications, including clinical diagnosis, food quality control, environmental monitoring. In this study we report a two-step fabrication process creating two-dimensional microfluidic channels to move liquids on hydrophobized paper surface. A highly hydrophobic surface was created by TiO2 nanoparticle coating using high-speed, roll-to-roll liquid flame spray technique....
Extremely hydrophobic surfaces, on which water droplets sit in a spherical shape leaving air entrapped into the roughness of solid, are often called superhydrophobic. Hierarchically rough superhydrophobic surfaces that possess submicron scale fine structures combined with micron generally more hydrophobic, and droplet adhesion to those is lower comparison possessing purely micrometric structures. In other words, usually structure surface reduces liquid-solid contact area adhesion. Here we...
Abstract Surface engineering can be used to prevent ice accumulation and adhesion in environments that deal with icing problems. One recent approach, slippery liquid infused porous surfaces (SLIPS), comprises a smooth lubricating surface, where lubricant is trapped within the pores of solid material repel various substances, such as water ice. However, it remains unclear whether retain their icephobic characteristics under impact supercooled droplets or repeated freezing melting cycles....
Slippery, liquid-infused porous surfaces offer a promising route for producing omniphobic and anti-icing surfaces. Typically, these are made as coating with expensive time consuming assembly methods or fluorinated films oils. We report on surfaces, which utilizes liquid precursor fed oxygen-hydrogen flame to produce titania nanoparticles deposited directly low-density polyethylene film. This nanocoating, thickness of several hundreds nanometers, is then filled silicone oil. The produced...
Abstract Nanocomposite films and coatings with improved properties were produced from ultrasonic dispersed chitosan hydrophilic bentonite nanoclay. Bio‐hybrid applied onto argon–plasma‐activated LDPE coated paper. The intercalation of in the silicate layers was confirmed by decrease diffraction angles as chitosan/nanoclay ratio increased. multilayer had barrier against oxygen, water vapor, grease, UV‐light transmission. Oxygen transmission significantly reduced under all humidity conditions....
Nanostructured coatings have been prepared on a flexible, moving paperboard using deposition of ca. 40-nm-sized titanium dioxide nanoparticles generated by liquid flame spray process, directly above the paperboard, to achieve improved functional properties for material. Properties such as surface wettability can be extensively thin layer substrate. Owing vulnerability heat, substrate needs moved rapidly through flame. This, other hand, generates setting roll-to-roll coating which favors...
The susceptibility of surface-modified wood, acetylated wood and to mold blue stain fungi was investigated. surface modifications were based on fluorinated non-fluorinated silicone nanofilaments for increased hydrophobicity. Results showed an resistance the superhydrophobic with appearing later or less intensity modified surfaces than untreated in accelerated chamber tests due water samples. All samples exhibited good as available reduced. had a slightly negative effect side effects from...
The chemical composition of a TiO2 nanoparticle coated paper surface was analyzed using time-of-flight secondary ion mass spectrometry (ToF-SIMS) to study the interconnection between wettability and chemistry on nanoscale. In this work, superhydrophobic rich in carboxyl-terminated molecules created by liquid flame spray process. can be converted photocatalytic oxidation into highly hydrophilic one. Interestingly, back heat treatment. results showed that both ultraviolet A (UVA) oven...
Polymer and paper structures have been successfully utilized in several fields, especially the packaging industry. Together with barrier properties, printability is an important property applications. From point of view printing, dense impervious structure extrusion coatings challenging. Flame, corona atmospheric plasma treatments were used to modify surface low density polyethylene (LDPE) polypropylene (PP) influence these modifications on print quality, i.e., toner adhesion visual quality...
Abstract The hydrophilic nature of wood surfaces is a major cause for water uptake and subsequent biological degradation dimensional changes. In the present paper, thin transparent superhydrophobic layer on pine veneer has been created controlling surface wettability repellency. This effect was achieved by means liquid flame spray (LFS) technique, in course which nanoparticulate titanium dioxide (TiO 2 ) brought to surface, followed plasma polymerisation. Plasma polymerised perfluorohexane...
The formation of a bridging gas meniscus via cavitation or nanobubbles is considered the most likely origin submicrometer long-range attractive forces measured between hydrophobic surfaces in aqueous solution. However, dynamics and evolution still under debate, particular, presence thin air layer on superhydrophobic surface. On range can even exceed 10 μm. Here, we report microscopic images growth during force measurements surface microsphere immersed water. This achieved by combining laser...
The effect of prolonged ultraviolet (UV) irradiation on the performance superhydrophobized birch and acetylated wood was investigated. surface modification based a newly developed method using silicone nanofilaments. combination acetylation showed good wetting resistance also after 600 h UV exposure, with water contact angles greater than 140° uptake 30 times lower by weight that non-surface-modified as determined multicycle Wilhelmy plate measurements. Scanning electron microscopy images...
The increasing utilization of wood-based products raises new demands for improved durability, example an enhanced liquid repellence. Superhydrophobic or superamphiphobic surfaces have been widely fabricated. Less attention has paid to such modifications on wood and the changes its hygroscopic solvoscopic properties. In this work, veneers were surface modified by hydrophobized silicone nanofilaments. Results revealed that surface-modified showed a behavior, i.e. it repelled water, ethylene...