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240203s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.3c03515
|2 doi
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|a pubmed24n1291.xml
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|a (DE-627)NLM367959895
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Banerjee, Utsab
|e verfasserin
|4 aut
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| 245 |
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|a Directional Manipulation of Drops and Solids on a Magneto-Responsive Slippery Surface
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 13.02.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The cloaking of the droplet and solid spheres by a thin ferrofluid layer forms a ferrofluid-wetting ridge, enabling the magnet-assisted directional manipulation of droplets and solid spheres on the magneto-responsive slippery surface. Understanding the interplay of various forces governing motion unravels the manipulation mechanism. The transportation characteristics of droplets and solid spheres on such surfaces enable their controlled manipulation in multiple applications. Here, we prepare magneto-responsive slippery surfaces by using superhydrophobic coatings on glass slides, creating a porous network and impregnating them with ferrofluid. Using a permanent magnet (and its translation) in the proximity of these surfaces, we manipulate the motion of liquid drops and solid spheres. Upon dispensing the droplet on the magneto-responsive slippery surface, the droplet is cloaked by a thin ferrofluid layer and forms a ferrofluid wetting ridge. Incorporating the magnetic field creates a magnetic-nanoparticle-rich zone surrounding the ferrofluid ridge. Thereafter, the motion of the magnet gives rise to the movement of the droplet. We found that the interplay of the magnetic force and viscous drag leads to the magnetic manipulation of droplets in a controlled fashion up to a certain magnet speed. Increasing the magnet speed further results in the uncontrolled motion of the droplet, where the droplet cannot follow the magnet trajectory. Moreover, we delineate multifunctional droplet manipulations, such as trapping, pendant droplet manipulation, coalescence, and microchemical reactions, which have wide engineering applications
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|a Journal Article
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| 700 |
1 |
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|a Gunjan, Madhu Ranjan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mitra, Sushanta K
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 40(2024), 6 vom: 13. Feb., Seite 3105-3116
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:40
|g year:2024
|g number:6
|g day:13
|g month:02
|g pages:3105-3116
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| 856 |
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|u http://dx.doi.org/10.1021/acs.langmuir.3c03515
|3 Volltext
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