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Skype -Interview

GIVEN TOPIC. ‘The Magnetic Braillepin ’. Skype -Interview. Arne L üker , 22 nd of Feb. 2013, iit Genua /Italy arnelueker@aim.com www.arne-lueker.de. Micro Magnetic Braillepin (MMB). Fundamentals : Lorentz Law Biot-Savart Law. The coil is the moving part in this arrangement

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Skype -Interview

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  1. GIVEN TOPIC ‘The Magnetic Braillepin’ Skype-Interview Arne Lüker, 22ndof Feb. 2013, iitGenua/Italy arnelueker@aim.com www.arne-lueker.de

  2. MicroMagneticBraillepin (MMB) Fundamentals: Lorentz Law Biot-Savart Law The coil is the moving part in this arrangement (like the voice-coil in a loudspeaker) The tube reduces the friction between the moving coil and its core. ( Polyimide tube: The inner surface is smooth enough to provide minimum friction, while the polyimide is stiff enough to provide a rigid base for the winding procedure – mandrel(*) The cap on top focuses the force in a smaller contact area to the fingertip and gives a well defined contact point. Based on "Development of Wearable Micro-Actuator Array for 3-D Virtual Tactile Displays", Z. Szabo, E. T. Enikov, Journal of Electromagnetic Analysis and Applications, 2012, 4, 219-229 *) A. Lüker, O. Sternberg, H.Hein, J. Schulz and K-D. Möller; "Thick capacitive meshes on polyimide substrates", Infrared Physics & Technology 45 (2004) 153–157

  3. The synthesis of Cu–Ni–Fe ferromagneticnanocomposites for “Core” and “Base” by modified Sol–Gel(* Aqueoussolutionof Ni(NO3)2∙6H2O Aqueoussolutionof Cu(NO3)2∙3H2O Aqueoussolutionof Fe(NO3)2∙9H2O Magnetic Nanocomposites, NMPs, are tunable as a function of particle size, size distribution and interparticle interactions Mixing with 70% aqueous solutionofglycolicacid Stirringand pH-control (7.5-8.5) with 25% aqueoussolutionofammonia Evaporation of Volatiles 70-80°C for 5 h „Sol“ They are “lighter” than metals Their (ferromagnetic) characteristics can be easily altered by varying the stoichiometric composition or by doping Stirringandheatingat 70-80°C transparent green „Gel“ Calcination at 600°C nanocomposite „Powder“ Cold pressing into form, Sintering at 800-900°C for 30 min., Final Bake at 1200°C for 4 h in air. *)A. Lüker, Sol–gel route of ferromagnetic Cu-Ni-Fe nanocomposites,Research Notes 4159, 2009

  4. Problems (a) The “coil”: difficult to produce via LIGA and MEMS (Examples of MEMS-coils) winding a wire (b) Because of the friction between coil and core electric power is needed to get to the “down-state”

  5. Comparison Interesting Challenge and Motivation for the next two years which impacts different areas of applied sciences! *) Taken fromZ. Szabo, E. T. Enikov, Journal of Electromagnetic Analysis and Applications, 2012, 4, 219-229

  6. Thanks! More information on www.arne-lueker.de

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