A simple approach for coffee-ring suppression yielding homogeneous drying patterns of ZnO and TiO2 nanoparticles

Marica, Ioana; Ştefan, Maria; Boca, Sanda; Fălămaș, Alexandra; Farcău, Cosmin

doi:10.1016/j.jcis.2022.12.113

Cited by 12 publications

(5 citation statements)

References 57 publications

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“…The ring pattern of CRE from drying droplets was overcome by controlling liquid properties such as surface tension, pH, and surface roughness and altering the temperature of the substrate as well as droplet temperature. Besides that, Marica et al's research shows that the addition of nanoparticles affected the final pattern (Marica et al, 2023). The addition of polymer or any other additives is one of the approaches done previously where it can alter the particle deposition of colloidal solution.…”

Section: Literature Reviewmentioning

confidence: 99%

Suppression of Coffee-ring Effect (CRE) in the Development of Low-cost Diagnostic Kit

Ideris,

Abu Bakar,

Ahmad

et al. 2024

E-BPJ

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One of the applications of membrane technology is using the polymeric membrane as an adsorber or assay-capturing matrix in the diagnostic kits' assembly. This study explores the addition of NaCl into a protein solution to suppress the coffee-ring effect (CRE) in developing a low-cost diagnostic kit. The highest concentration of NaCl addition shows the optimum results with no formation of CRE and high color intensity (low grey scale value). Adding NaCl into the protein solution is a safe and cheap alternative for lowering the cost of assembly, benefiting people in low-resource places.

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Section: Literature Reviewmentioning

confidence: 99%

Suppression of Coffee-ring Effect (CRE) in the Development of Low-cost Diagnostic Kit

Ideris,

Abu Bakar,

Ahmad

et al. 2024

E-BPJ

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“…However, the application of precursor sol in flexible printed display is limited by the following two points: ① compared with organic electronic materials, the bendability of oxide materials is generally poor, and their bendability can only be finitely improved by inhibiting crystallization or reducing the film thickness . ② In drop-on-demand printing process, the precursor sol faces “coffee ring effect” caused by the capillary flow inside the droplet, which will lead to uneven film thickness as well as degradation of device performance. ,− The above problems bring considerable challenges to printing high-performance oxide film on flexible substrate, and are also the key breakthrough point to realize flexible printed oxide devices.…”

Section: Introductionmentioning

confidence: 99%

Study on the Film-Forming Mechanism of Polymer–Metal Oxide Composite Ink Systems Containing Different Polymer Molecules

et al. 2023

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A printable, flexible display panel is an important trend in the field of information display, which requires better mechanical and electrical properties of device materials. Polymer− metal oxide composite materials are promising in the functional layer of a thin-film transistor (TFT) and can be sufficiently fabricated by polymer−metal salt solution systems through the sol−gel process. For the development of polymer−metal oxide composite ink, it is necessary to study the film-forming mechanism of the composite film during solidification, which is an important reference in ink component design. However, the evolution of the composite structure is quite complex, which brings a challenge to characterization and analyzation. We applied a series of characterization methods to study the film-forming process of composite ink from sol to gel and to solid, and an emerging testing technology, nano-infrared spectroscopy (nano-IR), was applied to characterize the gel film. The research conclusion showed that the type of functional group can significantly affect the morphology of the initial particle and can finally determine the microstructure of the composite film. The study provides references for the development of composite ink as well as the characterization method for ink and film with complex composition.

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“…15−17 In addition, drying at high temperatures can effectively obtain more uniform droplet patterns owing to the interface capture effect. 18 Recently, ingenious strategies to control relative humidity 19 and evaporation rate using lids 20 have been introduced to achieve uniform particle deposits.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Therefore, several studies have focused on ways to effectively suppress the coffee-ring effect of suspension droplets, such as changing the shape of the particles, − adding hydrosoluble-polymer additives, , and inducing Marangoni flow using a concentration or temperature-driven surface tension gradient on the droplet surface. − In addition, drying at high temperatures can effectively obtain more uniform droplet patterns owing to the interface capture effect . Recently, ingenious strategies to control relative humidity and evaporation rate using lids have been introduced to achieve uniform particle deposits.…”

Section: Introductionmentioning

confidence: 99%

Light-Scattering Analysis of Drying Behavior in Suspension Droplets with Silica and Polystyrene Particles and a Hydrosoluble Polymer

Lee,

Kim,

Lee

et al. 2023

Langmuir

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The coffee-ring structure, which is the final drying pattern of a sessile suspension droplet, is a key factor in controlling the uniformity of the particulate deposits in various coatings. Two light-scattering methods, diffusing wave spectroscopy (DWS) and multispeckle DWS (MSDWS), were used to quantitatively distinguish temporal changes in particle mobility in evaporating suspension droplets containing micrometer-sized silica and polystyrene (PS) particles. The characteristic particle mobility was measured in terms of the mean square displacement in the early stage of drying, and the local particle dynamics around the edge and center regimes of the droplets during drying were analyzed using MSDWS. Hydroxyethyl cellulose (HEC), a hydrosoluble polymer, was added to the silica and PS suspensions to further investigate its role in suppressing or enhancing coffee-ring patterns based on particle−polymer interactions. Consequently, dried microstructures can be directly correlated with real-time drying dynamics, as well as the interactions between solutes by comprehensive light-scattering methods.

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A simple approach for coffee-ring suppression yielding homogeneous drying patterns of ZnO and TiO2 nanoparticles

Cited by 12 publications

References 57 publications

Suppression of Coffee-ring Effect (CRE) in the Development of Low-cost Diagnostic Kit

Suppression of Coffee-ring Effect (CRE) in the Development of Low-cost Diagnostic Kit

Study on the Film-Forming Mechanism of Polymer–Metal Oxide Composite Ink Systems Containing Different Polymer Molecules

Light-Scattering Analysis of Drying Behavior in Suspension Droplets with Silica and Polystyrene Particles and a Hydrosoluble Polymer

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