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Showing 1 to 7 of 7 for “"Scanning Electron Diffraction"”.
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Crystal Cartography: Mapping Nanostructure with Scanning Electron Diffraction
… up to micrometres. Recent developments in electron microscopy, enabling the acquisition of numerous diffraction patterns in a spatially resolved manner, combined with modern computational power, provides a route to meet this need as developed in this work. Scanning electron diffraction …
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Diffraction Between the Spots: Scanning Electron Diffraction of Beam-sensitive Disordered Materials
… distributions. Much of this can be gleaned from diffraction spots, but even more of the information lies in-between the spots in a diffraction pattern. The diffracted intensity outside of the diffracted spots contains the necessary information to not only obtain structural information, but to …
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Methods and Applications for Nanometrology using Scanning Precession Electron Diffraction
Scanning electron diffraction offers researchers relatively easy access to the nanoscale and is often used to map sample properties in crystalline materials. Data quality can often be improved by introducing double conical rocking of the beam (commonly called precession). In this thesis, routes to …
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Pharmaceuticals on the Nanoscale: Multi-dimensional Electron Diffraction of Organic Molecular Crystals
… industry include single crystal and powder X-ray diffraction alongside other bulk characterisation techniques. However, these techniques lack the ability to probe a sample on the nanoscale. Electron beams can be focused into nano-meter sized probes which means they can be used to study samples at …
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Exploring the connections between nanostructure and operational stability in next-generation energy materials
… candidates for next-generation, low-cost optoelectronics with power conversion efficiencies well above 25%. However, operational stability remains a key challenge. Although there is an understanding that the microscale and nanoscale play a consequential role in determining the macroscopic …
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Characterising Nanostructure and Understanding its Influence on Phase Stability and Performance in Halide Perovskites
… for the next generation of low-cost optoelectronic applications. Photovoltaic (PV) devices fabricated from perovskite absorbers exhibit certified power conversion efficiencies exceeding 25.5% in single-junction devices and 29.5% in tandem configurations. Two of the fundamental challenges …
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Determination of local crystal symmetry in complex, multielement, ferroelectric perovskites and alloys
… complex, multi-element, crystals by developing scanning convergent beam electron diffraction (SCBED) based techniques. The applications of SCBED characterization demonstrated here include: ferroelectric BaTiO3 single crystal, relaxor-ferroelectric (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3 (x=0.08) single …