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231223s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la104458z
|2 doi
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|a eng
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1 |
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|a Uddin, Md Hemayet
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Novel characterization of microdrops and microbubbles in emulsions and foams using atomic force microscopy
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| 264 |
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|c 2011
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| 336 |
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|a Text
|b txt
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Completed 21.10.2014
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| 500 |
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|a Date Revised 04.02.2014
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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| 520 |
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|a The nature of the interface of drops or bubbles and the dynamic interactions between them often mediate or control macroscopic behavior in the formulation and processing of emulsions and foams in solvent extraction, froth flotation, food, personal care products, and microfluidics as well as in many biological processes. Characterization of these interfaces is often complicated due to the small size of the drops and bubbles that may range from the micrometer scale to hundreds of micrometers. We report the direct measurement of the surface or interfacial tension of drops or bubbles in aqueous solutions as a function of the concentration and type of surfactant, using atomic force microscopy (AFM) and a recently developed nanoneedle AFM cantilever. We also demonstrate the viability of imaging drops or bubbles of this size in both tapping and contact imaging modes through a systematic study of parameters, including cantilever spring constant, tip geometry, imaging force, and feedback settings as well as the AFM manufacturer. The imaging study demonstrates the viability of using AFM to visualize complex structures at the oil-water or air-water interface as well as how concentric ring artifacts observed in the literature are the result of earlier AFM instrument limitations
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| 650 |
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4 |
|a Journal Article
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1 |
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|a Tan, Sin Ying
|e verfasserin
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| 700 |
1 |
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|a Dagastine, Raymond R
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 27(2011), 6 vom: 15. März, Seite 2536-44
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