Title :
Magnetic micropillar sensors for force sensing
Author :
Alfadhel, A. ; Kosel, J.
Author_Institution :
Electr. & Math. Sci. & Eng. Div. (CEMSE), King Abdullah Univ. of Sci. & Technol. (KAUST), Thuwal, Saudi Arabia
Abstract :
A force sensor system consisting of bioinspired, magnetic and highly elastic micropillars integrated on a magnetic field sensing element is reported. The micro-pillars are made of a nanocomposite consisting of magnetic nanowires incorporated into polydimethylsiloxane. The permanent magnetic behavior of the nanowires allows remote operation without an additional magnetic field to magnetize the nanowires, which simplifies miniaturization and system integration. We demonstrate the potential of this concept by realizing a tactile sensing element. The developed sensor element operates at power consumption of 75 μW and has a detection range between 0-120 kPa and a resolution of 2.7 kPa, which can easily be tuned in a wide range.
Keywords :
force sensors; magnetic field measurement; magnetic materials; magnetic sensors; microsensors; nanocomposites; nanosensors; nanowires; permanent magnets; polymers; tactile sensors; elastic micropillar; force sensor system; magnetic field sensing element; magnetic micropillar sensor; magnetic nanowire; nanocomposite; permanent magnetic behavior; polydimethylsiloxane; power 75 muW; pressure 0 kPa to 120 kPa; tactile sensing element; Magnetic fields; Magnetic sensors; Perpendicular magnetic anisotropy; Robot sensing systems; Sensitivity; Cilia; Force Sensor; Magnetic; Microfabrication; Nanocomposite; Nanowires; Polymer; Tactile sensor;
Conference_Titel :
Sensors Applications Symposium (SAS), 2015 IEEE
Conference_Location :
Zadar
DOI :
10.1109/SAS.2015.7133654
