Peak Force Infrared-Kelvin Probe Force Microscopy.
Angew Chem Int Ed Engl
; 59(37): 16083-16090, 2020 09 07.
Article
em En
| MEDLINE
| ID: mdl-32463936
ABSTRACT
Correlative scanning probe microscopy of chemical identity, surface potential, and mechanical properties provide insight into the structure-function relationships of nanomaterials. However, simultaneous measurement with comparable and high resolution is a challenge. We seamlessly integrated nanoscale photothermal infrared imaging with Coulomb force detection to form peak force infrared-Kelvin probe force microscopy (PFIR-KPFM), which enables simultaneous nanomapping of infrared absorption, surface potential, and mechanical properties with approximately 10â
nm spatial resolution in a single-pass scan. MAPbBr3 perovskite crystals of different degradation pathways were studied inâ
situ. Nanoscale charge accumulations were observed in MAPbBr3 near the boundary to PbBr2 . PFIR-KPFM also revealed correlations between residual charges and secondary conformation in amyloid fibrils. PFIR-KPFM is applicable to other heterogeneous materials at the nanoscale for correlative multimodal characterizations.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article