Browsing by Author "Gómez Luna, Jorge Antonio"

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    Exploring the voltage divider approach for accurate memristor state tuning
    (IEEE, 2017) Vourkas, Ioannis; Gómez Luna, Jorge Antonio; Abusleme Hoffman, Ángel Christian; Vasileiadis, Nikolaos; Sirakoulis, Georgios C.; Rubio, Antonio
    The maximum exploitation of the favorable properties and the analog nature of memristor technology in future nonvolatile resistive memories, requires accurate multi-level programming. In this direction, we explore the voltage divider (VD) approach for highly controllable multi-state SET memristor tuning. We present the theoretical basis of operation, the main advantages and weaknesses. We finally propose an improved closed-loop VD SET scheme to tackle the variability effect and achieve <;1% tuning precision, on average 3x faster than another accurate tuning algorithm of the recent literature.
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    X ray emission from X pinch experiments on the Llampudken Generator
    (IEEE, 2002) Mitchell, Ian H.; Aliaga Rossel, Raul; Gómez Luna, Jorge Antonio; Chuaqui Kettlun, Hernán; Favre Domínguez, Mario; Wyndham Hodder, Edmund Sydenham
    The results from the first plasma physics experiments on the Llampüdkeñ Generator (1MA, 250 ns) are presented. X Pinch experiments have been undertaken at current levels of 400 kA with a rise time of ∼250 ns. X pinches were produced mainly from aluminium wires of different diameters and with varying numbers of wires. Results from X-ray diagnostics characterising the emitted radiation are presented. The diagnostics include filtered PIN diodes and a pinhole and slit-wire camera. Radiation of energy greater then 2.5 keV was emitted from hot spots in timescales of a few nanoseconds. Using the results from the slit-wire camera, the diameter of the hot spots is shown to be less than 5 µm.