Impact of enhanced electric field on light-induced evaporation process of plasmonic nanofluid

Zhao, Chang; An, Wei; Zhang, Yifan; Dong, Qingchun; Gao, Naiping

doi:10.1016/j.ijheatmasstransfer.2022.122708

Cited by 10 publications

(6 citation statements)

References 34 publications

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“…4) Fourth, the synergistic effect of the LSPR effect of metal nanoparticles and the full spectrum‐absorption effect of graphene can effectively accelerate the rate of water evaporation. [ 53 ] We divide the evaporation mechanism into two kinds: heat‐mediated evaporation mechanism and electric field‐mediated evaporation mechanism. The LSPR effect generates an enhanced electric field on the surface of metal nanoparticles, which can affect water molecules more quickly and directly, causing them to violently and periodically shake.…”

Section: Discussionmentioning

confidence: 99%

“…5) Fifth, the enhanced electric field around the nanoparticles must be high enough. [ 53 ] Otherwise, it would be like 1‐Ag/GA, unable to highlight its influence in the evaporation process, which the thermal diffusion mode would cover. 6) And finally, it isn't easy to accurately measure metallic aerogel's surface temperature when illuminated.…”

Section: Discussionmentioning

confidence: 99%

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Study of Metal–Graphene Aerogel for Efficient Solar Energy Interface Evaporation Based on One‐Step Thermal Reduction Method

Wu,

Zhu,

Liu

et al. 2023

Solar RRL

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Fresh water resources can be sustainably harvested through interfacial evaporation by solar energy. To enhance the efficiency of solar interfacial evaporation, a metal graphene alcohol gel was synthesized using a one‐step thermal reduction technique. Subsequently, a metal graphene aerogel was produced using freeze‐drying technology. The hydrothermal treatment method was applied to introduce asymmetric moisture and roughness on the upper and lower surfaces of the aerogel. The unique structure of the aerogel plays a significant role in facilitating continuous water transport to the interface for evaporation. The top layer, being hydrophobic, and the bottom layer, being hydrophilic, contribute to this process. Importantly, the top layer’s design ensures that an excessively thick water film does not form, thereby preventing any adverse effects on light absorption efficiency. The aerogel exhibits an outstanding water evaporation rate (WER) is 1.75 kg·m‐2·h‐1 and a remarkable photothermal conversion efficiency (PTCE) is 93.17% under one solar radiation intensity. This is because the aerogel has a unique three‐dimensional structure. This special three‐dimensional structure has an interconnected microporous‐like appearance inside, which increases the evaporation area. Metal‐graphene aerogel is based on the electric field dielectric evaporation mechanism of metal nanoparticles localized surface plasmon resonance (LSPR) effect and the thermal mediated evaporation mechanism of graphene full spectrum. Under the double action, the photothermal conversion efficiency has been significantly improved. Our meticulously created metallic graphene aerogel performs exceptionally well at evaporating water. As a result, it presents a promising and practical avenue for exploring effective solar interfacial evaporation.This article is protected by copyright. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Study of Metal–Graphene Aerogel for Efficient Solar Energy Interface Evaporation Based on One‐Step Thermal Reduction Method

Wu,

Zhu,

Liu

et al. 2023

Solar RRL

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“…Recently, it was proven that steam might be produced with outstanding efficiency from liquids containing metallic nanoparticles (NPs) and illuminated by focused light [1,2]. This process is of great significance for many plasmonicenhanced applications, ranging from solar energy utilization [3], and optofluidic control [4] to biomedicine [5].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Nanoparticle Aggregation on the Radiative Properties of Plasmonic Nanofluid during Light-induced Vaporization Process

Zhang¹,

An²,

Zhao³

et al. 2023

Proceedings of the 10th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT 2023)

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The light-induced vaporization process of plasmonic nanofluid plays an essential role in emerging efficient plasma-enhanced processes, ranging from solar energy harvesting to optofluidic control. In the current study, the effect of gold nanoparticle (AuNP) aggregation on the radiation properties during light-induced vaporization process has been investigated based on the finite element modeling (FEM). Specifically, the influence of the number and morphology of AuNP aggregates on the extinction cross section, albedo, and LSPR peak wavelength of particle-bubble complexes (P-B complexes) is studied. The results indicate that with the vaporization process of nanofluid, the radiative properties exhibit an obvious non-linear evolution law on the time scale and a periodic evolution pattern in the reciprocal cycle stages. The aggregation of AuNPs increases the peak extinction cross section. In the presence of nanobubble, whether the albedo of P-B complexes exceeds 0.5 depends on the relative magnitude of the extinction cross section of AuNP aggregates and nanobubble. After nanobubble dissipation, the aggregation of AuNPs increases the albedo of AuNP aggregates, although the albedo is still less than 0.5, showing a strong absorption of incident light. The aggregation of AuNPs causes a red-shift in the peak LSPR wavelength of AuNP aggregates, while the generation of nanobubble causes a blue-shift in the peak LSPR wavelength of AuNPs. In the presence of nanobubble, the change in the peak LSPR wavelength of P-B complexes depends on the competition between the redshift effect of AuNPs aggregation and the blue-shift effect of nanobubble, but in general the red-shifting effect of AuNP aggregation is stronger than the blue-shifting effect of nanobubble. The increase in the number of AuNPs aggregation layers causes the blue-shifted LSPR peak wavelength of AuNP aggregates, the decreased peak extinction cross section, the increased LSPR peak width, and the potential for multiple extinction peaks.

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“…As the electromagnetic field passes through a medium, it meets magnetic forces on moving charges and a drag (viscous) force on stationary charges. The quantity of electric field is enhanced to show the impacts on evaporation having light-driven processes taken gold, silver, and graphite type of nanoparticles . Numerical and experimental study is made for the re-dispersing nanoparticles in pool boiling created the instability in thermal transportation of nanofluid .…”

Section: Introductionmentioning

confidence: 99%

“…The quantity of electric field is enhanced to show the impacts on evaporation having light-driven processes taken gold, silver, and graphite type of nanoparticles. 44 Numerical and experimental study is made for the re-dispersing nanoparticles in pool boiling created the instability in thermal transportation of nanofluid. 45 This model electric field is induced for controlling the nanoparticle motion.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Electromagnetohydrodynamic Bioconvection Flow of Micropolar Nanofluid through a Stretching Sheet with Thermal Radiation and Stratification

et al. 2022

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The current work explores the bioconvection micropolar nanofluid through a stretching surface subjected to thermal radiation, stratification, and heat and mass transmission. Bioconvection contains the gyrotactic (random movement of microorganism in the direction of gravity with weak horizontal verticity) unicellular microorganism in aqueous environments. Heat and mass transfer assists the bioconvection to occur. The aim of this research is to evaluate the heat transfer rate of nanofluid in the presence of a unicellular microorganism. Self-similar variables are induced to reduce the governing equations into a non-linear differential system which is further solved via the bvp4c algorithm to tackle the fluid problem. Using visual representations, the effects of a number of dimensional less factors arising from the dimensional less differential system are determined. For a range of limiting conditions, the obtained results of this model correspond precisely to those in the literature. This study’s findings are highly regarded in the evaluation of the impact of key design factors on heat transfer and, therefore, in the optimization of industrial processes. Skin friction, local Nusselt number, Sherwood number, and density of microorganism concentrations are also studied for various parameters. Buoyancy ratio factor supports skin friction and density of microorganism profile to increase. Local Nusselt number drops due to the thermal radiation factor. Brownian motion speeds up the Sherwood number.

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Impact of enhanced electric field on light-induced evaporation process of plasmonic nanofluid

Cited by 10 publications

References 34 publications

Study of Metal–Graphene Aerogel for Efficient Solar Energy Interface Evaporation Based on One‐Step Thermal Reduction Method

Study of Metal–Graphene Aerogel for Efficient Solar Energy Interface Evaporation Based on One‐Step Thermal Reduction Method

The Effect of Nanoparticle Aggregation on the Radiative Properties of Plasmonic Nanofluid during Light-induced Vaporization Process

Numerical Study of the Electromagnetohydrodynamic Bioconvection Flow of Micropolar Nanofluid through a Stretching Sheet with Thermal Radiation and Stratification

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