Electrically modulated photothermal force microscopy for revealing molecular conformation changes during polarization switching at the nanoscale.

ABSTRACT: Organic ferroelectrics have attracted extensive attention because of the broad tunability of polarization via chemical and structural modifications. However, simultaneous analysis of the evolution of chemical and polarization properties at the nanoscale remains a challenge, impeding the understanding of their origin. In this work, we report electrically modulated photothermal force microscopy (ePTFM), an atomic force microscopy (AFM)-based technique that integrates nanoscale analysis of polarization with chemical specificity. By characterizing electrodriven ferroelectric switching in edge-on poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) lamellae, ePTFM reveals not only the evolution of polarization but also in situ chemical correlations. The results show that ePTFM has less

SUBMITTER: Yao S 

PROVIDER: S-EPMC12280132 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature