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  • High current inductor design for MHz switching
    Duffy, Meave; Collins, Christina; Rhen, Fernando M.F.; McCloskey, P.; Roy, Saibal (IEEE Computer Society, 2008)
    High current inductor applications operating in the MHz range are generally limited to Voltage Regulator Modules (VRM’s) and Point of Load (POL) power supplies, where the issue of fast transient response demands reduced ...
  • Influence of a magnetic field on the electrochemical rest potential
    Rhen, Fernando M.F.; Fernandez, Damaris; Hinds, Gareth; Coey, John Michael David (The Electrochemical Society, 2006)
    The influence of an external magnetic field on the rest potential ΔE0 of ferromagnetic and nonferromagnetic electrodes is studied. The shift E0 is measured as a function of magnetic field magnitude and direction, pH, ...
  • The integration of fluctuating renewable energy using energy storage
    Connolly, David (University of Limerick, 2011)
    Energy storage is often portrayed as an ideal solution for the integration of fluctuating renewable energy (RE) due to the flexibility it creates. However, there is uncertainty surrounding energy storage in terms of the ...
  • Investigation into the pressure sensing properties of PVDF and PVB thick film capacitors
    Arshak, Khalil; Morris, Deirdre; Arshak, Arousian; Korostynska, Olga; Kaneswaran, Kelly (IEEE Computer Society, 2002)
    This paper examines the sensitivity of polyvinylidene fluoride (PVDF) and polyvinyl butyral (PVB) capacitors to pressures ranging from 0 – 100 kPa. The capacitors were formed by screenprinting onto flexible substrates and ...
  • Investigation of TiO thick films as sensing layers in conductimetric pH sensors
    Arshak, Khalil; Gill, Edric I.; Arshak, Arousian; Korostynska, Olga (IEEE Computer Society, 2007)
    Due to the increasing demand for accurate, reliable and highly sensitive pH sensors, research is ongoing to find new materials and methods to achieve this goal. An approach that shows promise in the pH-sensing field is the ...
  • Localised sound optimisation in small enclosures
    Conway, Christina (University of Limerick, 2010)
    In this work an application was developed which uses the Sequential Quadratic Pro- gramming (SQP) optimisation algorithm to optimise boundary absorption in order to reduce the sound pressure level in a localised sampling ...
  • Low power programmable prototype sensor for remotely pressure monitoring
    Arshak, Khalil; Jafer, Essa; Arshak, Arousian; Waldron, David (IEEE Computer Society, 2006)
    In this paper, a miniaturized, low power, bidirectional wireless communication system has been developed to be used for in vivo pressure monitoring. The system prototype consists of miniature FSK transceiver integrated ...
  • Magnetic field effects on the rest potential of ferromagnetic electrodes
    Hinds, Gareth; Rhen, Fernando M.F.; Coey, John Michael David (IEEE Computer Society, 2002)
    The application of a magnetic field unexpectedly alters the rest potential of ferromagnetic electrodes in paramagnetic solutions of their salts. Anodic shifts of up to 60 mV in a field of 1 tesla were observed for 1M iron ...
  • Magnetic properties and underlayer thickness in SmCo/Cr films
    Romero, S.A.; Cornejo, D.R.; Rhen, Fernando M.F.; Neiva, A.C.; Tabacniks, M.H.; Missell, F.P. (American Institute of Physics, 2000)
    SmCo films with a Cr underlayer have been investigated as potentially attractive candidates for high density recording media. Magnetron sputtering was used here to produce Cr/SmCox/Cr films on Si (100) substrates. The ...
  • Magnetic properties of nickel nanowires : effect of deposition temperature
    Razee, Kafil M.; Rhen, Fernando M.F.; Roy, Saibal (American Institute of Physics, 2009)
    We have investigated the magnetic properties of electroplated nickel nanowires with very distinct nanostructures, which are obtained by simply changing the plating temperature of the electrolyte. Low temperature (40°C) ...
  • Magnetization of electrodeposited nickel : role of interstitial carbon
    O'Reilly, Cora; Sanvito, Stefano; Rhen, Fernando M.F.; Stamenov, Plamen; Coey, John Michael David (American Institute of Physics, 2006)
    The magnetization of nickel foils electrodeposited under different conditions was not usually found to differ significantly from that of the bulk (55.4 Am2 kg−1). However, some galvanostatically deposited films from a ...
  • Microfabricated inductors for 20 MHz dc-dc converters
    O'Donnell, Terence; Wang, Ningning; Meere, Ronan; Rhen, Fernando M.F.; Roy, Saibal; O'Sullivan, Denis; Ó Mathúna, Cian (IEEE Computer Society, 2008)
    This paper presents the design and measured results for micro-fabricated inductors suitable for use in high frequency (> 10 MHz), low power (1 –2 W) dc-dc converters. The design has focused on maximizing inductor efficiency ...
  • Modelling of magnetisation reversal in thin films, nanodots, nanopillars and nanowires
    Lynch, Thomas Francis (University of Limerick, 2010)
    Magnetic nanostructures have attracted attention due to their possible applications in information storage and sensors. The switching time and switching field are two magnetic properties that can determine the applicability ...
  • A new method for visualizing red blood cell content in the microcirculation
    Leahy, Martin J.; O'Doherty, Jim; Nilsson, Gert E.; Henricson, Joakim; Anderson, Chris; Sjoberg, Folke (SPIE—The International Society for Optical Engineering, 2007)
    A low-cost, noninvasive means of imaging red blood cells shows promise in applications aimed at assessing tissue viability.
  • Radiation-induced changes in the electrical properties of TiO2 thick films
    Arshak, Khalil; Korostynska, Olga; Arshak, Arousian; Morris, Deirdre (IEEE Computer Society, 2005)
    The electrical properties of screen-printed TiO2 based thick films were explored in terms of gamma radiation influence. Screen-printed pn-heterojunctions and resistors were exposed to γ- radiation from a 137Cs source ...
  • Real time diffuse reflectance polarisation spectroscopy imaging to evaluate skin microcirculation
    O'Doherty, Jim; Henricson, Joakim; Nilsson, Gert E.; Anderson, Chris; Leahy, Martin J. (Society of Photo‑Optical Instrumentation Engineers, 2007)
    This article describes the theoretical development and design of a real-time microcirculation imaging system, an extension from a previously technology developed by our group. The technology utilises polarisation spectroscopy, ...
  • Single point and imaging measurements of the optical clearing process
    Enfield, Joey; O'Doherty, Jim; Leahy, Martin J. (SPIE - Society of Photo‑Optical Instrumentation Engineers, 2007)
    Biomedical optics and photomedicine applications are challenged by the turbid nature of most biological tissue systems. This nature limits the penetration depth of light into the tissue. Optical clearing improves the ...
  • Thick-film permanent magnets by membrane electrodeposition
    Rhen, Fernando M.F.; Backen, E.; Coey, John Michael David (American Institute of Physics, 2005)
    Thick films of nearly equiatomic Co–Pt produced by electrodeposition into nanoporous membranes exhibit an isotropic magnetic phase with square hysteresis loops (Mr/Ms=0.95) and coercivity of up to 1.3 T. The initial ...
  • Top surface imaging lithography processes for I-line resists using liquid-phase silylation
    Arshak, Khalil; Arshak, Arousian; Mihov, Miroslav; McDonagh, Declan (IEEE Computer Society, 2002)
    In this paper, liquid-phase silylation process for Top Surface Imaging Lithography systems incorporated e-beam exposure has been experimentally investigated using FT-IR spectroscopy, UV spectroscopy, SIM spectrometry ...
  • A wireless pressure measurement system based on TiO2 interdigitated sensors
    Arshak, Khalil; Arshak, Arousian; Morris, Deirdre; Korostynska, Olga; Jafer, Essa (IEEE Computer Society, 2005)
    The ability to monitor pressure remotely is of particular importance in medical and environmental applications as it is less labour intensive, safer and offers peace of mind to the general public. To meet this demand, a ...

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