Insights into capillary-driven motion of micro-particles interacting with advancing meniscus on a substrate

Sajjad, Muhammad; Li, Hongxia; Raza, Aikifa; AlMarzooqi, Faisal; Zhang, Tiejun

doi:10.1039/d2sm01134d

Cited by 3 publications

(1 citation statement)

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“…4 ). By using infrared imaging 35 , 36 , we investigated the imbibition of saline water (24 wt.% NaCl) along the nanostructured TiO 2 /Ti mesh (artificial stem) in the biomimetic device by tracking the liquid front. The transient evolution of the waterfront along the mesh wires is shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Sustainable biomimetic solar distillation with edge crystallization for passive salt collection and zero brine discharge

Abdelsalam,

Sajjad,

Raza

et al. 2024

Nat Commun

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The urgency of addressing water scarcity and exponential population rise has necessitated the use of sustainable desalination for clean water production, while conventional thermal desalination processes consume fossil fuel with brine rejection. As a promising solution to sustainable solar thermal distillation, we report a scalable mangrove-mimicked device for direct solar vapor generation and passive salt collection without brine discharge. Capillarity-driven salty water supply and continuous vapor generation are ensured by anti-corrosion porous wicking stem and multi-layer leaves, which are made of low-cost superhydrophilic nanostructured titanium meshes. Precipitated salt at the leaf edge forms porous patch during daytime evaporation and get peeled by gravity during night when saline water rewets the leaves, and these salt patches can enhance vaporization by 1.6 times as indicated by our findings. The proposed solar vapor generator achieves a stable photothermal efficiency around 94% under one sun when treating synthetic seawater with a salinity of 3.5 wt.%. Under outdoor conditions, it can produce 2.2 L m−2 of freshwater per day from real seawater, which is sufficient for individual drinking needs. This kind of biomimetic solar distillation devices have demonstrated great capability in clean water production and passive salt collection to tackle global water and environmental challenges.

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Section: Resultsmentioning

confidence: 99%

Sustainable biomimetic solar distillation with edge crystallization for passive salt collection and zero brine discharge

Abdelsalam,

Sajjad,

Raza

et al. 2024

Nat Commun

Self Cite

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Capillary pumping-evaporation modeling and experimental characterization of saline water transport for passive solar desalination

Sajjad,

Abdelsalam,

Raza

et al. 2024

International Journal of Heat and Mass Transfer

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Pore-scale physics of ice melting within unconsolidated porous media revealed by non-destructive magnetic resonance characterization

Haile,

Sajjad,

Zhang

et al. 2024

Sci Rep

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Melting of ice in porous media widely exists in energy and environment applications as well as extraterrestrial water resource utilization. In order to characterize the ice-water phase transition within complicated opaque porous media, we employ the nuclear magnetic resonance (NMR) and imaging (MRI) approaches. Transient distributions of transverse relaxation time T2 from NMR enable us to reveal the substantial role of inherent throat and pore confinements in ice melting among porous media. More importantly, the increase in minimum T2 provides new findings on how the confinement between ice crystal and particle surface evolves inside the pore. For porous media with negligible gravity effect, both the changes in NMR-determined melting rate and our theoretical analysis of melting front confirm that conduction is the dominant heat transfer mode. The evolution of mushy melting front and 3D spatial distribution of water content are directly visualized by a stack of temporal cross-section images from MRI, in consistency with the corresponding NMR results. For heterogeneous porous media like lunar regolith simulant, the T2 distribution shows two distinct pore size distributions with different pore-scale melting dynamics, and its maximum T2 keeps increasing till the end of melting process instead of reaching steady in homogeneous porous media.

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Insights into capillary-driven motion of micro-particles interacting with advancing meniscus on a substrate

Abstract: Liquid-particle interactions at micro-scale are quite different from corresponding macro-scale interactions owing to the substantial role of capillary forces. Herein, we explore the interaction of a single micro-particle with an...

Cited by 3 publications

References 37 publications

Sustainable biomimetic solar distillation with edge crystallization for passive salt collection and zero brine discharge

Sustainable biomimetic solar distillation with edge crystallization for passive salt collection and zero brine discharge

Capillary pumping-evaporation modeling and experimental characterization of saline water transport for passive solar desalination

Pore-scale physics of ice melting within unconsolidated porous media revealed by non-destructive magnetic resonance characterization

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