Selective Evaporation at the Nozzle Exit in Piezoacoustic Inkjet Printing

Rump, Maaike; Sen, Uddalok; Jeurissen, Roger; Reinten, Hans; Versluis, Michel; Lohse, Detlef; Diddens, Christian; Segers, Tim

doi:10.1103/physrevapplied.19.054056

Cited by 6 publications

(6 citation statements)

References 71 publications

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“…Additionally, these inks often contain higher concentration of glycerol, which decreases the drying rate and practically reduces both nozzle clogging and ink surface cracking. 45 For a low glycerol content ink, ink A, the resulting d 2 activity is shown in Fig. 3(d)–(g); note that for Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, for ink A, the higher glycerol content drastically increases the viscosity and therefore spreading time-scale and evaporation rate, due to an interface enriched composition of glycerol which has been studied numerically and experimentally. 14,44,45 For ink C which contains surfactant, the contact angle was consistently smaller, implying increased spreading on all of the considered substrates, therefore increased contact area and line, implying an increased evaporation rate.…”

Section: Methodsmentioning

confidence: 99%

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Dynamics of individual inkjet printed picoliter droplet elucidated by high speed laser speckle imaging

Antonelli,

Fokkink,

Sprakel

et al. 2024

Soft Matter

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Dynamics of individual inkjet printed picoliter droplet elucidated by high speed laser speckle imaging

Antonelli,

Fokkink,

Sprakel

et al. 2024

Soft Matter

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“…Finally, studying evaporation from capillaries can also be useful in the case of inkjet printing, where the evaporation from the tip of the printing nozzle can lead to changes in the composition of the ink (Rump et al. 2023). Our model can provide insight into the changes in the composition at the nozzle tip for a given time scale and assist in choosing carefully the properties of the ink.…”

Section: Discussionmentioning

confidence: 99%

“…2005; Bacchin, Leng & Salmon 2022), inkjet printing (Lohse 2022; Rump et al. 2023), heat pipes (Chen et al. 2016), chromatography (Kamp et al.…”

Section: Introductionmentioning

confidence: 99%

“…Understanding the evaporation of liquids from capillaries is crucial for applications such as microfluidics (Zimmermann et al 2005;Bacchin, Leng & Salmon 2022), inkjet printing (Lohse 2022;Rump et al 2023), heat pipes (Chen et al 2016), chromatography (Kamp et al 2005) and the measurement of material properties (Roger, Sparr & Wennerström 2018;Merhi et al 2022;Nguyen, Bouchaudy & Salmon 2022). Capillaries are also considered to be idealised systems for modelling porous structures (Yiotis et al 2007;Chauvet et al 2009;Chen et al 2022;Le Dizès Castell et al 2023), the transport of water across skin (Sparr & Wennerström 2000;Roger et al 2016) and film drying (Guerrier et al 1998;Salmon, Doumenc & Guerrier 2017).…”

Section: Introductionmentioning

confidence: 99%

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Evaporation of binary liquids from a capillary tube

Thayyil Raju,

Diddens,

Rodríguez-Rodríguez

et al. 2024

J. Fluid Mech.

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Evaporation of multi-component liquid mixtures in confined geometries, such as capillaries, is crucial in applications such as microfluidics, two-phase cooling devices and inkjet printing. Predicting the behaviour of such systems becomes challenging because evaporation triggers complex spatio-temporal changes in the composition of the mixture. These changes in composition, in turn, affect evaporation. In the present work, we study the evaporation of aqueous glycerol solutions contained as a liquid column in a capillary tube. Experiments and direct numerical simulations show three evaporation regimes characterised by different temporal evolutions of the normalised mass transfer rate (or Sherwood number $Sh$ ), namely $Sh (\tilde{t} ) = 1$ , $Sh \sim 1/\sqrt {\tilde{t} }$ and $Sh \sim \exp (-\tilde{t} )$ , where $\tilde {t}$ is a normalised time. We present a simplistic analytical model that shows that the evaporation dynamics can be expressed by the classical relation $Sh = \exp ( \tilde{t} )\,\mathrm {erfc} ( \sqrt {\tilde{t} })$ . For small and medium $\tilde{t}$ , this expression results in the first and second of the three observed scaling regimes, respectively. This analytical model is formulated in the limit of pure diffusion and when the penetration depth $\delta (t)$ of the diffusion front is much smaller than the length $L(t)$ of the liquid column. When $\delta \approx L$ , finite-length effects lead to $Sh \sim \exp (-\tilde{t} )$ , i.e. the third regime. Finally, we extend our analytical model to incorporate the effect of advection and determine the conditions under which this effect is important. Our results provide fundamental insights into the physics of selective evaporation from a multi-component liquid column.

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