Power spectral density imaging for polymeric films using ex-situ solid-state magnetic resonance with needlelike ferromagnet.
basic_science · Level V
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- Record sourced from PubMed, PMID 39690631.
- Also identified by DOI 10.1103/PhysRevE.110.054503.
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Abstract
An ex-situ solid-state nuclear magnetic resonance (NMR) method employing localized magnetic field gradients generated by a needlelike ferromagnet is described. The depth profiling of a multilayer polymeric film using the proposed method and spin density imaging is successfully acquired. The imaging of the variable-frequency spinlattice relaxation rate in the depth direction reveals differences in the spectral density function for molecular dynamics between the surface and interior of the film. This may be due to the differences in the correlation time distribution of the molecular dynamics between the surfaces and interior of the film.