Thin-film multilayer stacks of mechanically hard magnetron sputtered indium tin oxide (ITO) and mechanically soft highly porous surface anchored metal-organic framework (SURMOF) HKUST-1 were studied using nanoindentation. Crystalline, continuous, and monolithic surface anchored MOF thin films were fabricated using a liquid-phase epitaxial growth method. Control over respective fabrication processes allowed for tuning of the thickness of the thin film systems with a high degree of precision. It was found that the mechanical indentation of such thin films is significantly affected by the substrate properties; however, elastic parameters were able to be decoupled for constituent thin-film materials (EITO ≈ 96.7 GPa, EHKUST−1 ≈ 22.0 GPa). For indentation of multilayer stacks, it was found that as the layer thicknesses were increased, while holding the relative thickness of ITO and HKUST-1 constant, the resistance to deformation was significantly altered. Such an observation is likely due to small, albeit significant, changes in film texture, interfacial roughness, size effects, and controlling deformation mechanism as a result of increasing material deposition during processing. Such effects may have consequences regarding the rational mechanical design and utilization of MOF-based hybrid thin-film devices.
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7 September 2015
Research Article|
September 08 2015
Nanomechanical investigation of thin-film electroceramic/metal-organic framework multilayers
James P. Best;
James P. Best
a)
1Empa, Swiss Federal Laboratories for Materials Science and Technology,
Laboratory for Mechanics of Materials and Nanostructures
, Feuerwerkerstrasse 39, CH-3602 Thun, Switzerland
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Johann Michler;
Johann Michler
1Empa, Swiss Federal Laboratories for Materials Science and Technology,
Laboratory for Mechanics of Materials and Nanostructures
, Feuerwerkerstrasse 39, CH-3602 Thun, Switzerland
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Jianxi Liu;
Jianxi Liu
2
Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT)
, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Zhengbang Wang;
Zhengbang Wang
2
Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT)
, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Manuel Tsotsalas;
Manuel Tsotsalas
2
Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT)
, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Xavier Maeder;
Xavier Maeder
1Empa, Swiss Federal Laboratories for Materials Science and Technology,
Laboratory for Mechanics of Materials and Nanostructures
, Feuerwerkerstrasse 39, CH-3602 Thun, Switzerland
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Silvana Röse;
Silvana Röse
3Preparative Macromolecular Chemistry,
Institute for Chemical Technology and Polymer Chemistry (ICTP), Karlsruhe Institute of Technology (KIT)
, Engesserstrasse 18, 76128 Karlsruhe, Germany
4
Institute for Biological Interfaces (IBG), Karlsruhe Institute of Technology (KIT)
, Herrmann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Vanessa Oberst;
Vanessa Oberst
5
Institute of Applied Materials (IAM), Karlsruhe Institute of Technology (KIT)
, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Jinxuan Liu;
Jinxuan Liu
2
Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT)
, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Stefan Walheim;
Stefan Walheim
6
Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT)
, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Hartmut Gliemann;
Hartmut Gliemann
2
Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT)
, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Peter G. Weidler;
Peter G. Weidler
2
Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT)
, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Engelbert Redel;
Engelbert Redel
a)
2
Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT)
, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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Christof Wöll
Christof Wöll
a)
2
Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT)
, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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a)
Authors to whom correspondence should be addressed. Electronic addresses: james.best@empa.ch; engelbert.redel@kit.edu; and christof.woell@kit.edu
Appl. Phys. Lett. 107, 101902 (2015)
Article history
Received:
April 21 2015
Accepted:
August 12 2015
Citation
James P. Best, Johann Michler, Jianxi Liu, Zhengbang Wang, Manuel Tsotsalas, Xavier Maeder, Silvana Röse, Vanessa Oberst, Jinxuan Liu, Stefan Walheim, Hartmut Gliemann, Peter G. Weidler, Engelbert Redel, Christof Wöll; Nanomechanical investigation of thin-film electroceramic/metal-organic framework multilayers. Appl. Phys. Lett. 7 September 2015; 107 (10): 101902. https://doi.org/10.1063/1.4930141
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