Electrochemical Synthesis and Nanofabrication of Materials for Magnetic and Ultrasound Sensors Application

We present the new approach to synthesize materials and nanostructures with application for magnetic field and ultrasound sensing. Our results indicate that electrodeposition at the nanoscale electrode geometry (nanocontacts) is an effective process that can deliver the ferromagnetic metal/oxide materials with desired composition and properties. These materials are the essential part of the nanocontact based device architecture which is investigated as the model system for magnetic filed sensor application. As an opposite process to electrodeposition, the dealloying i.e. a selective metal dissolution is used as fabrication process to create a high surface to volume ratio nanoporous metal structures. These structures are used as capacitive transducer for ultrasound sensor application. We present the preliminary results which demonstrate that thin layer - of nanoporous metal electrodes can be used as an inexpensive sensing device for ultrasound in electrolytes.