Polymer thin films with patterned ferroelectric domains are attractive for a broad range of applications, including the fabrication of tactile sensors, infrared detectors, and non-volatile memories. Herein, we report the use of gold nanocages (AuNCs) as plasmonic nanostructures to induce a ferroelectric-paraelectric phase transition in a poly(vinylidene fluoride) (PVDF) thin film by leveraging its photothermal effect. This technique allows us to generate patterned domains of ferroelectric PVDF within just a few seconds. The incorporation of AuNCs significantly enhances the pyroelectric response of the ferroelectric film under near-infrared irradiation. We also demonstrate the use of such patterned ferroelectric films for near-infrared sensing/imaging.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5168801 | PMC |
| http://dx.doi.org/10.1002/anie.201605405 | DOI Listing |
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- * HGNs have superior properties, such as higher photothermal conversion efficiency and enhanced Raman scattering, making them preferable for targeted drug delivery and tumor imaging.
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