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    A Magnetoresistive Tactile Sensor for Harsh Environment Applications

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    sensors-16-00650.pdf
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    Type
    Article
    Authors
    Alfadhel, Ahmed cc
    Khan, Mohammed Zahed Mustafa cc
    Cardoso, Susana
    Leitao, Diana
    Kosel, Jürgen cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Date
    2016-05-07
    Permanent link to this record
    http://hdl.handle.net/10754/610553
    
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    Abstract
    A magnetoresistive tactile sensor is reported, which is capable of working in high temperatures up to 140 °C. Hair-like bioinspired structures, known as cilia, made out of permanent magnetic nanocomposite material on top of spin-valve giant magnetoresistive (GMR) sensors are used for tactile sensing at high temperatures. The magnetic nanocomposite, consisting of iron nanowires incorporated into the polymer polydimethylsiloxane (PDMS), is very flexible, biocompatible, has high remanence, and is also resilient to antagonistic sensing ambient. When the cilia come in contact with a surface, they deflect in compliance with the surface topology. This yields a change of the GMR sensor signal, enabling the detection of extremely fine features. The spin-valve is covered with a passivation layer, which enables adequate performance in spite of harsh environmental conditions, as demonstrated in this paper for high temperature.
    Citation
    A Magnetoresistive Tactile Sensor for Harsh Environment Applications 2016, 16 (5):650 Sensors
    Sponsors
    Research reported in this publication is supported by the King Abdullah University of Science and Technology (KAUST). INESC-MN thanks FCT under EXCL/CTM-NAN/0441/2012 Project and Pest-OE/CTM/LA0024/2011. D. C. Leitao acknowledges FCT Grant SFRH/BPD/72359/2010.
    Publisher
    MDPI AG
    Journal
    Sensors
    DOI
    10.3390/s16050650
    PubMed ID
    27164113
    Additional Links
    http://www.mdpi.com/1424-8220/16/5/650
    ae974a485f413a2113503eed53cd6c53
    10.3390/s16050650
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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