Feasibility of new nanolayered transparent thin films for active shielding of low frequency magnetic field

The feasibility of low-frequency magnetic field active shielding by using transparent metals is investigated. The basics of transparent metals and of the nanotechnology exploited to realize a test sample made of silver and titanium oxide are provided. The design of the shield is carried out by evaluating the maximum current capability of the transparent metal as function of the working temperature in order to assess the performance of the proposed new active shielding technique, which avoids the use of bulk conductors for the current flow. The sensitivity analysis of the efficiency of the transparent active shield proposed is performed by numerical simulations, considering a 2D-test enclosure with an optical aperture, excited by an inner a.c. current source at 50 Hz.