What is it about?
Hybrid films of SrTiO3 nanoparticles and PVA have been studied using AFM, FFM and UFM. The SrTiO3 nanoparticles form nano-clusters from 3 to 5 individuals, which for high concentrations gather in micro-aggregates. Most SrTiO3 nanoparticles in the composite samples exhibited a lower (softer) UFM contrast than the PVA matrix. In the UFM images, SrTiO3 nanoparticles with intermediate contrast are delimited by a lower-contrast halo at the PVA boundary. The nanoscale ultrasonic response at th
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Why is it important?
Atomic Force Microscopy (AFM) and Ultrasonic Force Microscopy (UFM) have been applied to the characterization of composite samples formed by SrTiO3 (STO) nanoparticles (NPs) and polyvinyl alcohol (PVA). The morphological features of the STO NPs were much better resolved using UFM than contact-mode AFM topography. For high STO concentrations the individual STO NPs formed nanoclusters, which gathered in microaggregates. The STO aggregates, covered by PVA, exhibited no AFM frictional contrast, but
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This page is a summary of: Ultrasonic force microscopy on poly(vinyl alcohol)/SrTiO3 nano-perovskites hybrid films, Ultramicroscopy, July 2014, Elsevier,
DOI: 10.1016/j.ultramic.2014.03.012.
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