Plasmon‐Assisted Nanopoling of Poly(Vinyl Difluoride) Films. Issue 10 (10th March 2021)

• Record Type: Journal Article
• Authors: Chen, Fangqi; Wang, Yunxia; Wang, Shuangshuang; Zhai, Baoxing; Lu, Xiaolin; Sun, Bo; Ding, Tao
• Is Part Of: Advanced optical materials. Volume 9:Issue 10(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-03-10
• Subjects: gold nanoparticles -- optical poling -- phase change -- plasmonic heating -- poly(vinyl difluoride), PVDF films; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.202100084
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract: Plasmonic nanoheating can be utilized to induce nanophase transformation, which has important implications for nano‐optoelectronics, nano‐piezoelectronics, and high‐density data storage. Herein, optical poling of poly(vinyl difluoride) (PVDF) is shown with the assistance of surface plasmons. The ultrathin PVDF films are sandwiched between gold nanoparticles (Au NPs) and a gold film. By irradiating the Au NPs with continuous‐wave laser, nanoannealing of the PVDF films is realized, which locally transforms the PVDF from α phase to β phase as evidenced by Raman spectroscopy. This nanophase transformation is reproducible and scalable by scanning laser across the Au NP films deposited on the PVDF. In such a way, arbitrary patterns of β phases can be generated, which can potentially be applied for integrated piezoelectronic devices, high‐density data storage, and anti‐counterfeiting. Abstract : Optical nanopoling of poly(vinyl difluoride) (PVDF) films is realized by irradiating a gold nanoparticle on a mirror (Au NPoM) structure with the assistance of plasmonic heating. This sub‐nanometer phase change provides new opportunities for applications of piezoelectric nanodevices, high‐density data storage, and anticounterfeiting.