Viscoelastic liquid bridge breakup and liquid transfer between two surfaces

Chen, H.; Ponce-Torres, A.; Montanero, J. M.; Amirfazli, Alidad

doi:10.1016/j.jcis.2020.08.078

Cited by 8 publications

(5 citation statements)

References 21 publications

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“…The solution shows a high viscosity with shear-thinning characteristics and viscoelastic properties at high shear rates (Figures S2 and S3). The high viscosity and viscoelasticity (extensional hardening) can delay breakup of the liquid thread formed between the two separating plates and help increase the transfer ratio. As shown in Figure a,b, compared with the results for 0.15% PEO, the higher viscosity prohibits contact line slippage, leading to lower receding angle at bottom plate, which is consistent with the results in the literature. , In both cases of transfer from pristine surfaces, liquid transfer is determined to be dominated by surface tension forces due to Ca and We numbers of about 10 –3 –10 –5 .…”

Section: Resultsmentioning

confidence: 99%

“…To achieve high transfer ratios, a thorough understanding of the mechanism behind liquid transfer and its relation to the transfer ratio is necessary. In the literature, liquid transfer is evaluated by observing the transfer of a single droplet between two plates. ,, Droplets volumes down to 1–2 μL are used due to the limits of current optical observation systems, which have a spatial resolution limit of sub-millimeter scale. Moreover, the observation system usually has a temporal resolution of microseconds, and thus it is also difficult to obtain scaling laws prior to filament breakup.…”

Section: Introductionmentioning

confidence: 99%

“…To achieve total liquid transfer, the liquid/solid/air interface on the donor plate has to recede much faster than the acceptor plate, which can be attained by increasing the receding contact angle using shear-thinning liquids or fabricating a slip surface. , The most famous example of the liquid slip surface is the lotus leaf effect, which has been widely observed in many natural instances . On these surfaces, liquids can move around without any hydrodynamic resistance due to the ultrahigh contact angles (>150°).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Total Liquid Transfer with Enhanced Contact Line Slippage

You

Liao

2022

Langmuir

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A new surface treatment method is developed to achieve total liquid transfer. The transfer process of a liquid droplet is recorded through high-speed photography and analyzed via image analysis to investigate the hydrodynamic interactions. For a pristine PMMA surface, a viscous and viscoelastic liquid facilitates transfer by increased viscous and inertial forces and delayed liquid bridge breakage but is limited by slow contact line slippage. Hydrophobic surface treatments can increase contact line slippage and the receding angle to achieve transfer ratios up to 98%. However, pinning and contact angle hysteresis from surface roughness features limit liquid transfer, especially for smaller droplets and higher separation velocities. A lubricant-infused surface treatment with PDMS and a thin layer of less viscous silicone oil provides a smooth, homogeneous surface with fast slippage, low contact angle hysteresis, and only a slight oil wetting ridge. Liquid could then transfer at high ratios (∼99.9%), regardless of droplet size and separation velocity. Finally, complete transfer liquid from indented cells is demonstrated to show the potential of this surface modification method for gravure printing.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Total Liquid Transfer with Enhanced Contact Line Slippage

You

Liao

2022

Langmuir

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“…Compared with Newtonian liquids, the rupture of the liquid bridge with non-Newtonian liquids exhibits interesting results. Chen et al [18] demonstrated that the liquid bridge between two plates demonstrated a complete transfer or not at all, regardless of the liquid bridge volume and the stretching speed, when the polymer concentrations of aqueous solutions of poly (acrylic acid) became higher than 30 ppm.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigations of liquid bridge rupture between a sphere and a spherical concave

Huang

Fan

Wang

et al. 2023

J. Phys. D: Appl. Phys.

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Liquid bridges formation and rupture between solid surfaces have widespread applications in micro gripping, self-alignment, particles wetting. In the present study, an investigation of the axisymmetric liquid bridge rupture between a sphere and a spherical concave was performed systematically. Detailed analysis was conducted on the influence of the radius ratio, liquid bridge volume, and contact angles on the rupture distance and transfer ratio. When the radius ratio was smaller than 2, it had a substantial impact on the rupture distance and transfer ratio. The experimental studies supported the effectiveness of the simulation modeling based on a minimal energy approach. Theoretical findings by a shooting method and simulated results showed great agreement. It was demonstrated that the maxima absolute error for rupture distance and transfer ratio were 0.001 and 0.0175, respectively. The simulated and theoretical results are helpful to predict the rupture distance and transfer ratio.

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“…This process is based on the Plateau–Rayleigh instability of viscoelastic materials. When a viscoelastic material is pulled by an external force, the thickness of the center of the viscoelastic material thins and the bridge is formed [ 21 , 22 , 23 , 24 , 25 , 26 ]. The bridge is unstable and breaks up into a series or array of small droplets in a “beads-on-thread” shape due to the Plateau–Rayleigh instability.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Eutectic Ga-In Nanowire Arrays Based on Plateau–Rayleigh Instability

Ikuno

Somei

2021

Molecules

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We have developed a simple method of fabricating liquid metal nanowire (NW) arrays of eutectic GaIn (EGaIn). When an EGaIn droplet anchored on a flat substrate is pulled perpendicular to the substrate surface at room temperature, an hourglass shaped EGaIn is formed. At the neck of the shape, based on the Plateau–Rayleigh instability, the EGaIn bridge with periodically varying thicknesses is formed. Finally, the bridge is broken down by additional pulling. Then, EGaIn NW is formed at the surface of the breakpoint. In addition, EGaIn NW arrays are found to be fabricated by pulling multiple EGaIn droplets on a substrate simultaneously. The average diameter of the obtained NW was approximately 0.6 μm and the length of the NW depended on the amount of droplet anchored on the substrate. The EGaIn NWs fabricated in this study may be used for three-dimensional wiring for integrated circuits, the tips of scanning probe microscopes, and field electron emission arrays.

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Viscoelastic liquid bridge breakup and liquid transfer between two surfaces

Cited by 8 publications

References 21 publications

Total Liquid Transfer with Enhanced Contact Line Slippage

Total Liquid Transfer with Enhanced Contact Line Slippage

Experimental investigations of liquid bridge rupture between a sphere and a spherical concave

Fabrication of Eutectic Ga-In Nanowire Arrays Based on Plateau–Rayleigh Instability

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