Author
R.J. Fleming
Bio: R.J. Fleming is an academic researcher from Monash University, Clayton campus. The author has contributed to research in topics: Space charge & Polypyrrole. The author has an hindex of 12, co-authored 32 publications receiving 451 citations.
Papers
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86 citations
TL;DR: In this article, polypyrrole thin films containing trisoxalatometallate anions (M(ox) 3 3−, M = Cr and Al; ox = C 2 O 4 2− ) were prepared electrochemically from aqueous solution in a single-compartment cell.
49 citations
TL;DR: In this paper, the authors reviewed the most frequently used techniques of space charge profile measurent in dielectrics, and data for polyethylene published during the last 5-6 years are reviewed.
Abstract: Electronic charge transport in insulating polymers is briefly discussed, particularly the measurement of charge carrier mobility. The more frequently used techniques of space charge profile measurent in dielectrics are then described, and data for polyethylene published during the last 5-6 years are reviewed.
46 citations
TL;DR: In this paper, thin films of polypyrrole (PPy) containing tetrasulfonated metallophthalocyanine anions (MTsPc 4−, MCu, Ni and Co) were prepared electrochemically from aqueous solution in a single-compartment cell.
43 citations
TL;DR: In this paper, the accumulation of space charge in XLPE (crosslinked polyethylene), crosslinked using DCP (dicumyl peroxide) or a silane-based grafting process, was studied via the LIPP (laser-induced-pressure-pulse) technique.
Abstract: The accumulation of space charge in XLPE (cross-linked polyethylene), cross-linked using DCP (dicumyl peroxide) or a silane-based grafting process, was studied via the LIPP (laser-induced-pressure-pulse) technique. Planar samples 0.5 mm thick were obtained from the XLPE insulation of power distribution cables. DC fields to 10 kV/mm were applied at temperatures in the range 20 to 90/spl deg/C. Usually the DCP samples developed heterocharge, and the silane samples homocharge. However, the observed space charge densities were not very different. Nearly all of the charge accumulated within 100 /spl mu/m of each electrode, with very little in the remainder of the volume. Both sample types showed a near-perfect inversion of the equilibrium space charge profiles on reversing the applied voltage polarity. This observation is explained in terms of charge injection at the electrodes, electron transfer between electrode and XLPE in either direction involving the same narrow 'window' of combined donor and acceptor states in the insulator, centered on the Fermi level.
41 citations
Cited by
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TL;DR: Significantly more neurofilament positive staining was found on the coated electrode which indicated that the coatings had established strong connections with the neuronal structure in vivo.
506 citations
TL;DR: In this article, the authors show that the formal potential of a metallophthalocyanine complex needs to be in a rather narrow potential window for achieving maximum activity, probably corresponding to surface coverages of an M-molecule adduct equal to 0.5.
479 citations
TL;DR: In vitro studies and immunocytochemistry on murine glial cells suggest that the released drug lowers the count of reactive astrocytes to the same extent as the added drug.
471 citations
TL;DR: In this paper, the synthetic methodology of conducting polymer has been briefly considered with chemical oxidation polymerization and electrochemical polymerization with respect to soft template method, hard template method and template-free method.
Abstract: A paradigm shift takes place in the fabrication of conducting polymers from bulky features with microsize to ultrafine features with nanometer range. Novel conducting polymer nanomaterials require the potential to control synthetic approaches of conducting polymer on molecular and atomic levels. In this article, the synthetic methodology of conducting polymer has been briefly considered with chemical oxidation polymerization and electrochemical polymerization. The recent achievements in the fabrication of conducting polymer nanomaterials have been extensively reviewed with respect to soft template method, hard template method and template-free method. It also details the morphological spectrum of conducting polymer nanomaterials such as nanoparticle, core-shell nanomaterial, hollow nanosphere, nanofiber/nanorod, nanotube, thin film and nanopattern and nanocomposite. In addition, their applications are discussed under nanometer-sized dimension.
396 citations
TL;DR: In this article, the authors present a review article of the properties of XLPE and an examination of the origins of space charge and how it is measured, and the effect of morphology on electrical properties of polyethylene is discussed in detail.
Abstract: The authors present a review article of the properties of XLPE and an examination of the origins of space charge and how it is measured. The space charge in the insulation and the conduction current can affect the electric stress distribution in the insulation. The effect of morphology on the electrical properties of polyethylene is discussed in detail.
285 citations