Structuring of Magnetic Nanoparticle Fluids for Decorative and Functional Printing and Coating

Fosso, Narcis; Frau, Eleonora; Schintke, Silvia

doi:10.1109/icton.2018.8473656

Cited by 2 publications

(4 citation statements)

References 9 publications

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“…A homogeneous assembly of colloidal particles is formed by aligning the magnetic moment of the nanoparticles along the direction of the applied magnetic field, which finds application in photonics for structural color display [ 172 , 173 ] and coating the pseudo-spin valve (PSV) thin films in spintronics devices [ 3 , 174 ]. As the exposed area can be altered in the presence of a magnetic field, magnetic pattern printing also can be used in decorative or security printing [ 173 ]. The self-assembly of solute particles can also be regulated by interaction with SAW to make uniform disc-like or concentrated spot-like deposition residues, for use in diagnostics, printing, and mass spectrometry [ 52 , 175 ].…”

Section: Applicationsmentioning

confidence: 99%

Control of the Drying Patterns for Complex Colloidal Solutions and Their Applications

et al. 2022

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The uneven deposition at the edges of an evaporating droplet, termed the coffee-ring effect, has been extensively studied during the past few decades to better understand the underlying cause, namely the flow dynamics, and the subsequent patterns formed after drying. The non-uniform evaporation rate across the colloidal droplet hampers the formation of a uniform and homogeneous film in printed electronics, rechargeable batteries, etc., and often causes device failures. This review aims to highlight the diverse range of techniques used to alleviate the coffee-ring effect, from classic methods such as adding chemical additives, applying external sources, and manipulating geometrical configurations to recently developed advancements, specifically using bubbles, humidity, confined systems, etc., which do not involve modification of surface, particle or liquid properties. Each of these methodologies mitigates the edge deposition via multi-body interactions, for example, particle–liquid, particle-particle, particle–solid interfaces and particle–flow interactions. The mechanisms behind each of these approaches help to find methods to inhibit the non-uniform film formation, and the corresponding applications have been discussed together with a critical comparison in detail. This review could pave the way for developing inks and processes to apply in functional coatings and printed electronic devices with improved efficiency and device yield.

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Section: Applicationsmentioning

confidence: 99%

Control of the Drying Patterns for Complex Colloidal Solutions and Their Applications

et al. 2022

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“…% in H2O (1.17 g/mL) (Sigma Aldrich)) has been used. Coatings have been obtained by blade coating and subsequent drying [5]. The NP suspension has been characterized by dynamic light scattering (DLS, Nanolab 3D system (LS Instruments)), as presented in [5,6].…”

Section: Thin Film Preparationmentioning

confidence: 99%

“…Coatings have been obtained by blade coating and subsequent drying [5]. The NP suspension has been characterized by dynamic light scattering (DLS, Nanolab 3D system (LS Instruments)), as presented in [5,6]. Wet confined Fe2O3 films have been obtained by drop casting on a glass substrate, a glass cover slip was then placed on top in order to vertically confine the thin liquid film.…”

Section: Thin Film Preparationmentioning

confidence: 99%

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Laser Induced Surface Modification for Inkjet Printing and Coating

Scheuber

Frau

Schintke

2019

2019 21st International Conference on Transparent Optical Networks (ICTON)

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Lasers are nowadays widely applied in additive manufacturing and several laser based techniques related to inkjet printing are emerging. In this paper, surface treatment of nanoparticle coatings using a commercial laser engraving machine are presented. Experiments were performed on (i) thin thermally cured silver nanoparticle coatings on glass and (ii) iron oxide (Fe2O3) nanoparticle dispersion coatings on glass. The laser treatment on Ag films illustrates local melting or dewetting behavior dependent on laser power and on the density of engraving patterns. For Fe2O3 coatings, direct laser writing on dried layers and laser treatment on fluid nanoparticle ink layers are investigated. We demonstrate and discuss in particular the generation of large area laser induced microstructures in vertically confined nanoparticle ink films. Controlled ink accumulation is generated by the laser pulses. Furthermore, 2D porous network structures, as well as laser induced large area filament structures are generated by heat driven capillary flow. Tailored adjustments of nanoparticle inks, film thickness and laser treatment patterns open perspectives for the generation of laser induced self-assemblies, e.g. for novel fabrication processes for 2D metamaterials, for sensor developments or advanced anti-counterfeit applications.

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Structuring of Magnetic Nanoparticle Fluids for Decorative and Functional Printing and Coating

Cited by 2 publications

References 9 publications

Control of the Drying Patterns for Complex Colloidal Solutions and Their Applications

Control of the Drying Patterns for Complex Colloidal Solutions and Their Applications

Laser Induced Surface Modification for Inkjet Printing and Coating

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