Nanoparticles for dewetting suppression of thin polymer films used in chemical sensors
| Autor: | Melissa A. Holmes, Michael E. Mackay, Rachel K. Giunta |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Materials science Fullerene Annealing (metallurgy) Nanoparticle Bioengineering Nanotechnology General Chemistry Polymer Condensed Matter Physics Atomic and Molecular Physics and Optics Condensed Matter::Soft Condensed Matter symbols.namesake Chemical engineering chemistry Modeling and Simulation Physics::Atomic and Molecular Clusters symbols General Materials Science Wafer Surface acoustic wave sensor Dewetting van der Waals force |
| Zdroj: | Journal of Nanoparticle Research. 9:753-763 |
| ISSN: | 1572-896X 1388-0764 |
| DOI: | 10.1007/s11051-006-9118-1 |
| Popis: | Addition of fullerenes (C60 or buckyballs) to a linear polymer has been found to eliminate dewetting when a thin (∼50 nm) film is exposed to solvent vapor. Based on neutron reflectivity measurements, it is found that the fullerenes form a coherent layer approximately 2 nm thick at the substrate – polymer film interface during the spin-coating process. The thickness and relative fullerene concentration (∼29 vol%) is not altered during solvent vapor annealing and it is thought this layer forms a solid-like buffer shielding the adverse van der Waals forces promoted by the underlying substrate. Several polymer films produced by spin- or spray-coating were tested on both silicon wafers and live surface acoustic wave sensors demonstrating fullerenes stabilize many different polymer types, prepared by different procedures and on various surfaces. Further, the fullerenes drastically improve sensor performance since dewetted films produce a sensor that is effectively inoperable. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink