Polymer film deposition from a receding solution meniscus: The effect of laminar forced air convection

Wedershoven, Hmjm Ber; Zeegers, Jch Jos; Darhuber, Anton A.

doi:10.1016/j.ces.2018.02.006

Cited by 13 publications

(9 citation statements)

References 67 publications

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“…In the low blading speed regime, termed also evaporative regime, the solvent first evaporates at the triple contact line and then the coating solution rises to the edge of the meniscus by capillary forces resulting in the pinning of the solution to the substrate. As reported in many studies, the pinning/depinning phenomenon of the contact line leads to the formation of a periodic pattern through successive pinning/depinning of the solution [15]. Figure 33 shows a schematic representation of the pattern formation mechanism induced by the pinning/depinning phenomenon.…”

Section: Groove Stripementioning

confidence: 77%

“…However, by including a solutal Marangoni stress, they obtained patterned deposits in the evaporative regime for certain ranges of the control parameters [55], [56]. Darhuber et al reported the periodic pattern deposition of polymer films from a receding solution meniscus in a horizontal die-coating geometry, by means of experiments and numerical simulations [15]. The substrate speed and the evaporation rate of the solvent were identified as the main control parameters.…”

Section: Iii) Periodic Deposits and Patterned Deposition At Moving Contact Linesmentioning

confidence: 99%

“…This is because stick-slip behaviour resulting in a stripe-patterned film, which is not desirable in applicaltions requiring uniform films. The stick-slip phenomenon has been observed for different systems such as small molecules, colloidal suspensions, polymer solutions and sol-gel solutions [14,15]. This review highlights the recent progress in the emerging field of meniscus-guided deposition of OSC materials, with particular emphasis on materials and physical chemistry of surface thin films that have the potential to achieve improved electrical performance devices.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Large-scale patterning of π-conjugated materials by meniscus guided coating methods

Richard

Al-Ajaji

Ren

et al. 2020

Advances in Colloid and Interface Science

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Printed organic electronics has attracted considerable interest in recent years as it enables the fabrication of large-scale, low-cost electronic devices, and thus offers significant possibilities in terms of developing new applications in various fields. Easy processing is a prerequisite for the development of low-cost, flexible and printed plastics electronics. Among processing techniques, meniscus guided coating methods are considered simple, efficient, and low-cost methods to fabricate electronic devices in industry. One of the major challenges is the control of thin film morphology, molecular orientations and directional alignment of polymer films during coating processes. Herein, the recent progress of emerging field of meniscus guided 2 printing organic semiconductor materials is discussed. The first part of this report briefly summarizes recent advances in meniscus guided coating techniques. The second part discusses periodic deposits and patterned deposition at moving contact lines, where the mass-transport influences film morphology due to convection at the triple contact line. The last section summarizes our strategy to fabricate large-scale patterning of πconjugated polymers using meniscus guided method. I)

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Section: Groove Stripementioning

confidence: 77%

Section: Iii) Periodic Deposits and Patterned Deposition At Moving Contact Linesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Large-scale patterning of π-conjugated materials by meniscus guided coating methods

Richard

Al-Ajaji

Ren

et al. 2020

Advances in Colloid and Interface Science

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show abstract

“…We believe that the halo formation after the first pinning is akin to a coating process, 37,38 where a thin deposit film is left behind by a receding solution meniscus. According to Fig.…”

Section: Discussionmentioning

confidence: 99%

Evaporation of water droplets on photoresist surfaces – An experimental study of contact line pinning and evaporation residues

Darhuber

2019

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…As a result, many individual nanorings remain on the substrate, the diameter of which can vary from a few nanometers to several hundred nanometers [185]. The authors [186] proposed to combine die-coating technology, EISA method based on capillary bridge (stick-slip motion of contact line), and active evaporation control due to local air flow.…”

Section: Hybrid Methods For Controlling Particle Depositionmentioning

confidence: 99%

Applying Droplets and Films in Evaporative Lithography

Kolegov,

Barash

2020

Preprint

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The review covers experimental results of evaporative lithography and analyzes existing mathematical models of this method. Evaporating droplets and films are applied in different fields, such as cooling of heated surfaces of electronic devices, diagnostics in health care, creation of transparent conductive coatings on flexible substrates, surface patterning. A method called evaporative lithography emerged after establishing the connection between the coffee ring effect taking place in drying colloidal droplets, and naturally occuring inhomogeneous vapor flow densities from fluid-vapor interfaces. Essential control of the colloidal particle deposit patterns is achieved in this method by producing ambient conditions that induce a nonuniform evaporation profile from the colloidal liquid surface. Evaporative lithography is part of a wider field, which is known as "Evaporative-induced self-assembly" (EISA). EISA involves methods based on the contact line processes, methods employing particle interaction effects and evaporative lithography. As a rule, evaporative lithography is a flexible and single-stage process with such advantages as simplicity, low price and possibility of application to almost any substrate without pretreatment. Since no mechanical impact on a template is present in evaporative lithography, the template integrity is preserved in the process. The method is also useful for creating materials with localized functions, such as slipperiness and self-healing. For these reasons, evaporative lithography attracts increasing attention and has a number of noticeable achievements at present. We also analyze limitations of the approach and ways of its further development.

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Polymer film deposition from a receding solution meniscus: The effect of laminar forced air convection

Cited by 13 publications

References 67 publications

Large-scale patterning of π-conjugated materials by meniscus guided coating methods

Large-scale patterning of π-conjugated materials by meniscus guided coating methods

Evaporation of water droplets on photoresist surfaces – An experimental study of contact line pinning and evaporation residues

Applying Droplets and Films in Evaporative Lithography

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