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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.9b02369
|2 doi
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|a eng
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|a Hurier, Marion A
|e verfasserin
|4 aut
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|a Nonlinear Phase Imaging of Gold Nanoparticles Embedded in Organic Thin Films
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|c 2019
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 04.03.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The phase detection in the dynamic mode of the atomic force microscopes is a known technique for mapping nanoscale surface heterogeneities. We present here an additional functionality of this technique, which allows high-resolution imaging of embedded inorganic nanoparticles with diameter and interparticle distances of a few nanometers. The method is based on a highly nonlinear tip-sample interaction occurring markedly above the nanoparticles, giving thus a high phase contrast between zones with and without nanoparticles. A relationship between the tip-sample interaction strength and the phase signal is established in experiments and from calculations conducted with the model developed by Haviland et al. [ Soft Matter 2016 , 12 , 619 ], which is based on solving a combined equation of motion for both the cantilever and surface while taking into account the time-varying interaction forces. The nonlinear phase behavior at the origin of the subnanometer spatial resolution is found by numerical analyses to be the result of a local mechanical stiffening of the zone containing nanoparticles, which is enhanced by 2 orders of magnitude or more
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|a Journal Article
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|a Wierez-Kien, Maxime
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mzayek, Cecilia
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Donnio, Bertrand
|e verfasserin
|4 aut
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| 700 |
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|a Gallani, Jean-Louis
|e verfasserin
|4 aut
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| 700 |
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|a Rastei, Mircea V
|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 35(2019), 52 vom: 31. Dez., Seite 16970-16977
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|x 1520-5827
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| 773 |
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|g volume:35
|g year:2019
|g number:52
|g day:31
|g month:12
|g pages:16970-16977
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|u http://dx.doi.org/10.1021/acs.langmuir.9b02369
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