Stability of mechanical properties of molecular layer–deposited alucone
| Autor: | Ivo Utke, Nadia Rohbeck, N. Tarasiuk, Johann Michler, Mikko Ruoho, Czesław Kapusta |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Fabrication Polymers and Plastics 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Catalysis Biomaterials chemistry.chemical_compound Colloid and Surface Chemistry Coating Materials Chemistry Thin film Composite material chemistry.chemical_classification Polymer 021001 nanoscience & nanotechnology 0104 chemical sciences Electronic Optical and Magnetic Materials Ambient air Interfacial shear chemistry engineering 0210 nano-technology Ethylene glycol Layer (electronics) |
| Zdroj: | Materials Today Chemistry. 10:187-194 |
| ISSN: | 2468-5194 |
| Popis: | We report on the effect of aging on the mechanical properties of molecular layer–deposited (MLD) thin films. We studied the mechanical failure of the films during uniaxial tensile testing and observed a sixfold difference in the crack-onset strain (COS) and related flexibility within the first two days after the samples were exposed to ambient air. The MLD films made using trimethylaluminum and ethylene glycol are notorious for exhibiting structural changes after the fabrication; we show that these changes are detrimental for mechanical robustness of the films. This information aids to plan the handling or the protection of these films to achieve better performance with these materials. The interfacial shear strains and COSs of the shortly air-exposed 300-nm-thick films were observed to be roughly 0.3% and 1.8%, respectively. These values are the highest reported so far for hybrid organic–inorganic MLD thin films and would extrapolate to about 14% COS for 5-nm-thick film, indicating potential applications as interfacial adhesion layer for films on polymer substrates and as a protective coating in battery applications. |
| Databáze: | OpenAIRE |
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