Small· 2026Q1
Correlative 3D Electron Tomography and Nanobeam 4D‐STEM Mapping of Orientation and Strain in Welded Silver Nanowires
- 0citations
- Q1SCImago
- 2026year
Short summary
A combined 3D electron tomography and 4D-STEM approach reveals that thermally welded silver nanowire junctions exhibit minimal coherent strain (<0.5%) and small rotational distortions, with orientation inheritance across the weld.
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Key points
- 3D electron tomography reveals asymmetric and faceted morphology of silver nanowire welds.
- Nanobeam 4D-STEM mapping demonstrates orientation inheritance across the junction.
- Full-field strain maps show minimal coherent strain (<0.5%) and small rotational distortions.
- The correlative approach provides multidimensional insight into weld formation and interfacial behavior.
AI-generated from the title and abstract; the full text is not read.
Abstract
A correlative analysis combining three-dimensional (3D) electron tomography and small convergence angle convergent-beam electron diffraction acquired in four-dimensional scanning transmission electron microscopy (4D-STEM) mode is used to investigate the structure, crystallographic orientation, and strain distribution in thermally welded silver nanowire (AgNW) junctions. High-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) tomography enables reconstruction of the asymmetric and faceted morphology of AgNW welds, revealing distinct ridge continuity and facet-specific junction geometries. Complementary diffraction mapping demonstrates orientation inheritance across the junction and crystallographic continuity within the welded region. Full-field strain maps derived from nanobeam 4D-STEM reveal minimal coherent strain (typically <0.5%) and small rotational distortions associated with nanowire bending. This multidimensional correlation of geometry, crystallography, and strain provides insight into weld formation mechanisms and interfacial behavior beyond the limits of conventional two-dimensional and localized atomic-resolution studies.
The authors' abstract, as published at the source. Small, 2026 · DOI ↗
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Structural BiologyBiochemistry, Genetics and Molecular Biology