Ruy Alberto Corrêa Altafim

Template-based fluoroethylenepropylene piezoelectrets with tubular channels for transducer applications

Ruy Alberto Pisani Altafim, Xunlin Qiu, Werner Wirges et al. · Journal of Applied Physics · 2009 · 168 citations

Engineering, Mechanical Engineering, Biomedical Engineering +21

Incipient fault diagnosis in power transformers by data-driven models with over-sampled dataset

Sofia Moreira de Andrade Lopes, Rogério Andrade Flauzino, Ruy Alberto Corrêa Altafim · Electric Power Systems Research · 2021 · 59 citations · Full text

Fault Diagnosis, Engineering, Machine Learning +12

Ionic impurities in nematic liquid crystal displays

M.R. Costa, Ruy Alberto Corrêa Altafim, Alaide P. Mammana · Liquid Crystals · 2001 · 45 citations

Materials Science, Solid-state Ionic, Engineering +11

Laminated tubular-channel ferroelectret systems from low-density polyethylene films and from fluoroethylene- propylene copolymer films - A comparison

Ruy Alberto Pisani Altafim, Dmitry Rychkov, Werner Wirges et al. · IEEE Transactions on Dielectrics and Electrical Insulation · 2012 · 36 citations

Engineering, Mechanical Engineering, Tubular-channel Ferroelectret Systems +21

Piezoelectricity in multi-air voids electrets

Ruy Alberto Corrêa Altafim, H. C. Basso, L. Goncalves Neto et al. · 2005 · 34 citations

Materials Science, Electrical Engineering, Energy Harvesting +13