The Experts below are selected from a list of 32268 Experts worldwide ranked by ideXlab platform
Damien W M Arrigan - One of the best experts on this subject based on the ideXlab platform.
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enhanced electroanalytical sensitivity via interface Miniaturisation ion transfer voltammetry at an array of nanometre liquid liquid interfaces
Electroanalysis, 2011Co-Authors: Micheal D Scanlon, Damien W M ArriganAbstract:The benefit of miniaturization towards the nanoscale of electroanalytical systems was evaluated by assessment of the sensitivity of the response. Ion transfer voltammetry across the interface between two immiscible electrolyte solutions (ITIES) was employed as the basis for detection of nonredoxactive ions. The analytical sensitivity increased on Miniaturisation of the interface from millimetre-, to micrometre-, to nanometre-scale, with an improvement in sensitivity of more than three orders of magnitude. This is due to the enhanced mass transport via convergent diffusion as the size of the ITIES is minimised. These results illustrate the benefit of Miniaturisation of electrochemical detection methods to the nanoscale.
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Enhanced Electroanalytical Sensitivity via Interface Miniaturisation: Ion Transfer Voltammetry at an Array of Nanometre Liquid–Liquid Interfaces
Electroanalysis, 2011Co-Authors: Micheal D Scanlon, Damien W M ArriganAbstract:The benefit of miniaturization towards the nanoscale of electroanalytical systems was evaluated by assessment of the sensitivity of the response. Ion transfer voltammetry across the interface between two immiscible electrolyte solutions (ITIES) was employed as the basis for detection of nonredoxactive ions. The analytical sensitivity increased on Miniaturisation of the interface from millimetre-, to micrometre-, to nanometre-scale, with an improvement in sensitivity of more than three orders of magnitude. This is due to the enhanced mass transport via convergent diffusion as the size of the ITIES is minimised. These results illustrate the benefit of Miniaturisation of electrochemical detection methods to the nanoscale.
Micheal D Scanlon - One of the best experts on this subject based on the ideXlab platform.
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enhanced electroanalytical sensitivity via interface Miniaturisation ion transfer voltammetry at an array of nanometre liquid liquid interfaces
Electroanalysis, 2011Co-Authors: Micheal D Scanlon, Damien W M ArriganAbstract:The benefit of miniaturization towards the nanoscale of electroanalytical systems was evaluated by assessment of the sensitivity of the response. Ion transfer voltammetry across the interface between two immiscible electrolyte solutions (ITIES) was employed as the basis for detection of nonredoxactive ions. The analytical sensitivity increased on Miniaturisation of the interface from millimetre-, to micrometre-, to nanometre-scale, with an improvement in sensitivity of more than three orders of magnitude. This is due to the enhanced mass transport via convergent diffusion as the size of the ITIES is minimised. These results illustrate the benefit of Miniaturisation of electrochemical detection methods to the nanoscale.
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Enhanced Electroanalytical Sensitivity via Interface Miniaturisation: Ion Transfer Voltammetry at an Array of Nanometre Liquid–Liquid Interfaces
Electroanalysis, 2011Co-Authors: Micheal D Scanlon, Damien W M ArriganAbstract:The benefit of miniaturization towards the nanoscale of electroanalytical systems was evaluated by assessment of the sensitivity of the response. Ion transfer voltammetry across the interface between two immiscible electrolyte solutions (ITIES) was employed as the basis for detection of nonredoxactive ions. The analytical sensitivity increased on Miniaturisation of the interface from millimetre-, to micrometre-, to nanometre-scale, with an improvement in sensitivity of more than three orders of magnitude. This is due to the enhanced mass transport via convergent diffusion as the size of the ITIES is minimised. These results illustrate the benefit of Miniaturisation of electrochemical detection methods to the nanoscale.
Hubert Diez - One of the best experts on this subject based on the ideXlab platform.
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Miniaturization of Compact Quadrifilar Helix Antennas for Telemetry, Tracking and Command Applications
Progress In Electromagnetics Research, 2016Co-Authors: Alexandru Takacs, Herve Aubert, Daniel Belot, Hubert DiezAbstract:This paper addresses the miniaturization of Quadrifilar Helix Antennas (QHAs) for space applications (VHF Telemetry, Tracking and Command). Several shape miniaturization techniques were presented and the impact of height reduction is quantified in terms of radiation pattern, gain and phase center. Simulation and experimental results demonstrate that Compact Quadrifilar Helix Antennas (CQHAs) with a height reduced up to 70% reported to the reference QHA can be designed. By using an appropriate optimization method the impact of the miniaturization on CQHA performances in terms of radiation pattern and polarization purity can be minimized. Moreover the impact on the gain is quantified and design rules are reported. Finally a closed-form expression for estimating the gain of CQHAs from the height reduction factor is found.
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Miniaturisation technique for quadrifilar helix antenna
Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation, 2012Co-Authors: Alexandru Takacs, Tonio Idda, Herve Aubert, Hubert DiezAbstract:We address a new miniaturization technique for quadrifilar helix antennas (QHAs). An innovative combination of sinusoidal and modified fractal curves is proposed in order to design compact QHAs compatible with space application size constraints. Relative size reductions in the range of 30%-80% can be obtained without a major degradation of most antenna performances. A comparative study is performed in order to highlight the capabilities of the proposed miniaturization technique.
Juan R. Mosig - One of the best experts on this subject based on the ideXlab platform.
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PCS antenna design: The challenge of miniaturization
IEEE Antennas and Propagation Magazine, 2001Co-Authors: Anja K. Skrivervik, Jean-francois Zürcher, Olaf Staub, Juan R. MosigAbstract:PCS (personal communication system) devices have become an\nimportant part of everyday life. The pressure to design small,\nlightweight, and user-friendly mobile-communication devices has\nincreased accordingly, creating the need for optimal antennas for mobile\napplications. In this paper, we present some basic rules about\nelectrically small antennas, give clues and guidelines about efficient\nantenna miniaturization, and, finally, show some examples of miniature\nantennas developed in our laboratory for practical applications
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PCS antenna design: The challenge of Miniaturisation
IEEE Antennas and Propagation Society International Symposium: Wireless Technologies and Information Networks APS 1999 - Held in conjunction with USNC, 1999Co-Authors: Olaf Staub, Jean-francois Zürcher, Anja K. Skrivervik, Juan R. MosigAbstract:As mobile communication equipment become smaller and lighter,\nantennas must follow the trend. However, antenna size reduction is done\nat the expense of gain and bandwidth. This follows from the fact that an\nantenna is used to transform a free wave into a radiated wave. One\nunderstands easily that an antenna can perform this transformation only\nwith a poor efficiency when its size is much smaller than the\nwavelength. If the loss of gain can be, to some extent, compensated by\namplification, this is obviously not the ease for the bandwidth. For a\ngiven configuration, the design of the antenna should be done in order\nto use the maximum volume available. This maximum volume will\ntheoretically give the upper bound for both gain and bandwidth
Kathryn Knight - One of the best experts on this subject based on the ideXlab platform.
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mini ants manage vision Miniaturisation
The Journal of Experimental Biology, 2019Co-Authors: Kathryn KnightAbstract:![Figure][1] A seed harvesting ant worker ( Pheidole species) standing on the eye of a bull ant, Myrmecia tarsata . Photo credit: Ajay Narendra. Miniaturisation doesn't seem to be a problem for Ant-Man when he climbs into his suit and shrinks, but the mini-superhero could face challenges