Structural and dynamic properties of the solid-liquid interfaces studied by Molecular Dynamics simulations

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Zivanovic, Lidija
dc.date.accessioned 2018-08-24T09:03:04Z
dc.date.available 2018-08-24T09:03:04Z
dc.date.issued 2018
dc.identifier.isbn 978-952-60-8124-3 (electronic)
dc.identifier.isbn 978-952-60-8123-6 (printed)
dc.identifier.issn 1799-4942 (electronic)
dc.identifier.issn 1799-4934 (printed)
dc.identifier.issn 1799-4934 (ISSN-L)
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/33597
dc.description.abstract The solid-liquid interface represents systems of great and diverse technological importance. The interfacial phenomena at solid-liquid interfaces play an important role in a wide range of biological, chemical and industrial processes, such as heterogeneous catalysis, environmental remediation, waste disposal, biomineralization, and others. In order to understand these processes, it is important to study solid-liquid interfaces at the atomic level.    Nowadays, these interfaces are mainly explored at the atomic scale with AFM, providing detailed insights into the liquid structure. Since it was discovered, AFM experienced numerous technical improvements that led to the development of 2D and 3D force mapping technique. Although these new techniques allow us to visualize hydration layers at solid-liquid interfaces with molecular resolution, the biggest flaw is with regards to the interpretation of the results due to the very complex nature of the experiments themselves. Hence, the connection between the measured signal and physical processes usually requires additional analysis tools.    In order to provide a better understanding of the processes being investigated by AFM, in this work classical molecular dynamics techniques (MD) are employed. As part of this work, we used MD simulations to support and explain AFM images obtained at highly reactive surface steps. Up until now, AFM imaging of the heterogeneous step edges was accompanied by many difficulties and as such, has not been obtained. In this thesis, we represented the first obtained 3D AFM topographic images of the hydration structures at heterogeneous edges and provided additional understanding of the atomic structure of the hydration layers and the processes at such edges by performing MD simulations. The distribution of charge in the solid-liquid interfaces plays an essential role in a wide range of processes in biology, geology, and technology. It was also noticed that AFM measurements in electrolytic solutions resulted in improved atomic-scale image stability and resolution in respect to the AFM experiments performed in pure water. Hence, in this thesis we demonstrated the mechanism of ion influences on the interface structures by performing MD simulations at hydrophilic solid-liquid interfaces such as muscovite mica and calcite in high molar solutions (~5 M), also expanding the understanding of AFM measurements in high molar solutions.    The last topic included in this thesis refers to the theoretical investigation of the origin of the hydration layers. We showed that ordering at the interface is mainly the result the attractive interactions only, although there are some indications that confinement alone (in the absence of the attractive interactions) can also be a source of layering. en
dc.format.extent 128 + app. 36
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Aalto University en
dc.publisher Aalto-yliopisto fi
dc.relation.ispartofseries Aalto University publication series DOCTORAL DISSERTATIONS en
dc.relation.ispartofseries 149/2018
dc.relation.haspart [Publication 1]: Fumiaki Ito, Kei Kobayashi, Peter Spijker, Lidija Zivanovic, Kenichi Umeda, Tarmo Nurmi, Nico Holmberg, Kari Laasonen, Adam S. Foster, Hirofumi Yamada. Molecular Resolution of the Water Interface at an Alkali Halide with Terraces and Steps. The Journal of Physical Chemistry C, Volume 120, Pages 19714–19722, August 2016. DOI: 10.1021/acs.jpcc.6b05651
dc.relation.haspart [Publication 2]: Kenichi Umeda, Lidija Zivanovic, Kei Kobayashi, Juha Ritala, Hiroaki Kominami, Peter Spijker, Adam S. Foster, Hirofumi Yamada. Atomic-resolution three-dimensional hydration structures on a heterogeneously charged surface. Nature communications, Volume 8, Article Number 2111, October 2017. DOI: 10.1038/s41467-017-01896-4
dc.relation.haspart [Publication 3]: Hagen Songen, Lidija Zivanovic, Sebastian Seibert, Ralf Bechstein, Peter Spijker, Hiroshi Onishi, Adam S. Foster, Angelika Kuhnle. Hydration layers at the graphite water interface: Confinement or attraction? Submitted 2018.
dc.subject.other Physics en
dc.title Structural and dynamic properties of the solid-liquid interfaces studied by Molecular Dynamics simulations en
dc.type G5 Artikkeliväitöskirja fi
dc.contributor.school Perustieteiden korkeakoulu fi
dc.contributor.school School of Science en
dc.contributor.department Teknillisen fysiikan laitos fi
dc.contributor.department Department of Applied Physics en
dc.subject.keyword molecular dynamics en
dc.subject.keyword solid-liquid interfaces en
dc.subject.keyword atomic force microscopy en
dc.identifier.urn URN:ISBN:978-952-60-8124-3
dc.type.dcmitype text en
dc.type.ontasot Doctoral dissertation (article-based) en
dc.type.ontasot Väitöskirja (artikkeli) fi
dc.contributor.supervisor Foster, Adam S., Prof., Aalto University, Department of Applied Physics, Finland
dc.opn Raiteri, Paolo, Prof., Curtin University, Australia
dc.contributor.lab Surfaces and Interfaces at the Nanoscale (SIN) en
dc.rev Sugawara, Yasuhiro, Prof., Osaka University, Japan
dc.rev Raiteri, Paolo, Prof., Curtin University, Australia
dc.date.defence 2018-09-12
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