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dc.contributor.authorRibeiro, Pedro
dc.contributor.authorKhan, Mohammed Asadullah
dc.contributor.authorAlfadhel, Ahmed
dc.contributor.authorKosel, Jürgen
dc.contributor.authorFranco, Fernando
dc.contributor.authorCardoso, Susana
dc.contributor.authorBernardino, Alexandre
dc.contributor.authorSantos-Victor, Jose
dc.contributor.authorJamone, Lorenzo
dc.date.accessioned2018-01-01T12:19:02Z
dc.date.available2018-01-01T12:19:02Z
dc.date.issued2017-06-13
dc.identifier.citationRibeiro P, Khan MA, Alfadhel A, Kosel J, Franco F, et al. (2017) A Miniaturized Force Sensor Based on Hair-Like Flexible Magnetized Cylinders Deposited Over a Giant Magnetoresistive Sensor. IEEE Transactions on Magnetics 53: 1–5. Available: http://dx.doi.org/10.1109/TMAG.2017.2714625.
dc.identifier.issn0018-9464
dc.identifier.issn1941-0069
dc.identifier.doi10.1109/TMAG.2017.2714625
dc.identifier.urihttp://hdl.handle.net/10754/626597
dc.description.abstractThe detection of force with higher resolution than observed in humans (similar to 1 mN) is of great interest for emerging technologies, especially surgical robots, since this level of resolution could allow these devices to operate in extremely sensitive environments without harming these. In this paper, we present a force sensor fabricated with a miniaturized footprint (9 mm(2)), based on the detection of the magnetic field generated by magnetized flexible pillars over a giant magnetoresistive sensor. When these flexible pillars deflect due to external loads, the stray field emitted by these will change, thus varying the GMR sensor resistance. A sensor with an array of five pillars with 200 mu m diameter and 1 mm height was fabricated, achieving a 0 to 26 mN measurement range and capable of detecting a minimum force feature of 630 mu N. A simulation model to predict the distribution of magnetic field generated by the flexible pillars on the sensitive area of the GMR sensor in function of the applied force was developed and validated against the experimental results reported in this paper. The sensor was finally tested as a texture classification system, with the ability of differentiating between four distinct surfaces varying between 0 and 162 mu m root mean square surface roughness.
dc.description.sponsorshipThis work was supported under Project EXCL/CTM-NAN/0441/2012, Project PTDC/CTM-NAN/3146/2014, and Project UID/EEA/50009/2013. The work of F. Franco was supported by FCT Project under Grant SFRH/BD/111538/2015. The work of L. Jamone was supported by LIMOMAN-PIEFGA-2013-628315.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttp://ieeexplore.ieee.org/document/7947170/
dc.subjectForce sensors
dc.subjectmagnetic sensors
dc.subjectmicrosensors
dc.titleA Miniaturized Force Sensor Based on Hair-Like Flexible Magnetized Cylinders Deposited Over a Giant Magnetoresistive Sensor
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.identifier.journalIEEE Transactions on Magnetics
dc.conference.dateAPR 24-28, 2017
dc.conference.nameIEEE International Magnetics Conference (Intermag)
dc.conference.locationDublin, IRELAND
dc.contributor.institutionPhysics Department, Instituto Superior Técnico, 1049-001 Lisbon, Portugal
dc.contributor.institutionINESC-Microssistemas e Nanotecnologias and IN, 1000-029 Lisbon, Portugal
dc.contributor.institutionInstituto de Sistemas e Robótica, Instituto Superior Técnico, 1049-001 Lisbon, Portugal
dc.contributor.institutionAdvanced Robotic at Queen Mary, School of Electronic Engineer and Computer Science, Queen Mary University of London, London E1 4NS, U.K.
kaust.personKhan, Mohammed Asadullah
kaust.personAlfadhel, Ahmed
kaust.personKosel, Jürgen


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