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Alexandra E. Porter
Researcher at University of Cambridge
Publications - 22
Citations - 2490
Alexandra E. Porter is an academic researcher from University of Cambridge. The author has contributed to research in topics: Apatite & Carbon nanotube. The author has an hindex of 16, co-authored 22 publications receiving 2373 citations. Previous affiliations of Alexandra E. Porter include Electronics and Telecommunications Research Institute & Pohang University of Science and Technology.
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Journal ArticleDOI
Direct imaging of single-walled carbon nanotubes in cells
Alexandra E. Porter,Mhairi Gass,Karin H. Müller,Jeremy N. Skepper,Paul A. Midgley,Mark E. Welland +5 more
TL;DR: Transmission electron microscopy and confocal microscopy are used to image the translocation of single-walled carbon nanotubes into cells in both stained and unstained human cells, which were seen to enter the cytoplasm and localize within the cell nucleus, causing cell mortality in a dose-dependent manner.
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Comparison of in vivo dissolution processes in hydroxyapatite and silicon-substituted hydroxyapatite bioceramics
TL;DR: High-resolution transmission electron microscopy observations confirmed that defects, in particular those involving grain boundaries, were the starting point of dissolution in vivo and may help to explain the mechanism by which silicate ions increase the in vivo bioactivity of pure HA.
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Effect of sintered silicate-substituted hydroxyapatite on remodelling processes at the bone-implant interface.
TL;DR: The findings suggest that the incorporation of silicate ions into HA promotes processes of bone remodelling at the bone/HA interface and suggested that the trabecular bone weaves over the Si-HA and that the collagen fibrils form a mechanical interlock with theSi-HA ceramic implants.
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Uptake of C60 by human monocyte macrophages, its localization and implications for toxicity: Studied by high resolution electron microscopy and electron tomography
TL;DR: The aim was to establish if human monocyte macrophages internalise nanoparticles and to assess whether nanoparticles are modified by cells following uptake, and to demonstrate the potential of electron tomography for whole cell studies to enable 3-D distributions of particles within cells.
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Surface-stress-induced Mott transition and nature of associated spatial phase transition in single crystalline VO2 nanowires.
Jung Inn Sohn,Heung Jin Joo,Docheon Ahn,Hyun Hwi Lee,Alexandra E. Porter,Ki-nam Kim,Dae Joon Kang,Mark E. Welland +7 more
TL;DR: It is shown that the stress-induced antiferromagnetic Mott insulating phase is critical in controlling the spatial extent and distribution of the insulating monoclinic and metallic rutile phases as well as the electrical characteristics of the Mott transition.