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231225s2017 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.7b02915
|2 doi
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|a pubmed24n0923.xml
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|a (NLM)29043815
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Bartali, Ruben
|e verfasserin
|4 aut
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|a Graphene as Barrier to Prevent Volume Increment of Air Bubbles over Silicone Polymer in Aqueous Environment
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|c 2017
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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
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|2 rdacarrier
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|a Date Completed 31.07.2018
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|a Date Revised 31.07.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The interaction of air bubbles with surfaces immersed in water is of fundamental importance in many fields of application ranging from energy to biology. However, many aspects of this topic such as the stability of surfaces in contact with bubbles remain unexplored. For this reason, in this work, we investigate the interaction of air bubbles with different kinds of dispersive surfaces immersed in water. The surfaces studied were polydimethylsiloxane (PDMS), graphite, and single layer graphene/PDMS composite. X-ray photoelectron spectroscopy (XPS) analysis allows determining the elemental surface composition, while Raman spectroscopy was used to assess the effectiveness of graphene monolayer transfer on PDMS. Atomic force microscopy (AFM) was used to study the surface modification of samples immersed in water. The surface wettability has been investigated by contact angle measurements, and the stability of the gas bubbles was determined by captive contact angle (CCA) measurements. CCA measurements show that the air bubble on graphite surface exhibits a stable behavior while, surprisingly, the volume of the air bubble on PDMS increases as a function of immersion time (bubble dynamic evolution). Indeed, the air bubble volume on the PDMS rises by increasing immersion time in water. The experimental results indicate that the dynamic evolution of air bubble in contact with PDMS is related to the rearrangement of surface polymer chains via the migration of the polar groups. On the contrary, when a graphene monolayer is present on PDMS, it acts as an absolute barrier suppressing the dynamic evolution of the bubble and preserving the optical transparency of PDMS
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Lamberti, Andrea
|e verfasserin
|4 aut
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|a Bianco, Stefano
|e verfasserin
|4 aut
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|a Pirri, Candido F
|e verfasserin
|4 aut
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|a Tripathi, Manoj
|e verfasserin
|4 aut
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|a Gottardi, Gloria
|e verfasserin
|4 aut
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|a Speranza, Giorgio
|e verfasserin
|4 aut
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|a Iacob, Erica
|e verfasserin
|4 aut
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| 700 |
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|a Pugno, Nicola
|e verfasserin
|4 aut
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| 700 |
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|a Laidani, Nadhira
|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 33(2017), 45 vom: 14. Nov., Seite 12865-12872
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:33
|g year:2017
|g number:45
|g day:14
|g month:11
|g pages:12865-12872
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|u http://dx.doi.org/10.1021/acs.langmuir.7b02915
|3 Volltext
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