AI Article Synopsis
- Polymer nanostructures are important in nanotechnology but are often unstable under harsh conditions, which limits their use.
- A new method has been developed to enhance their stability by applying a thin oxide coating through atomic-layer deposition.
- This coating significantly improves the thermal and chemical resistance of the polymer structures, demonstrated through stable PMMA nanostructures, suggesting broader applications in optical devices needing high durability.
Article Abstract
Polymer nanostructures have drawn tremendous attention due to their wide applications in nanotechnology. However, the morphology of the polymer nanostructures is fragile under harsh conditions such as high-power irradiation and organic-solution environments during the fabrication or the measurement processes, significantly limiting their potential applications. In this work, we propose and demonstrate a simple approach to improve the stability of polymer nanostructures by coating a conformal ultrathin oxide film via atomic-layer deposition. Due to the refractory and dense coating of the oxide layer, the stability of polymer structures is enhanced by the prohibition of deformation occurrences from thermally induced reflow and organic solution. As a proof of concept, poly(methyl methacrylate) (PMMA) nanostructures coated with a sub-10-nm TiOlayer are demonstrated, and the structures exhibit high temperature stability at 180 °C and good resistance to soluble damage from organic solutions. Subsequently, the mechanism of the improved thermal stability is analyzed via mechanical simulations. Such an effective approach is proposed to significantly broaden the application of polymer nanostructures as functional elements for optical structures/devices that require excellent thermal and chemical stability.
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| http://dx.doi.org/10.1088/1361-6528/abf300 | DOI Listing |
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