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The research carried on in the field of dielectric nanomaterials requires a large amount of fast and accurate measurements, such as the current/voltage characteristics, which produce currents under the 1nA range. The size of the available devices forces them to be placed outside the measurement setup, allowing a large influence of the electric noise. Supplementary, they are unable to measure during...
The paper presents some transceivers for ultrasonic transducers based on Emfit Ferro-Electret Film (EMFi). The proposed and discussed transceivers use the wide bandwidth of EMFi material-from audio up to hundreds of kHz, for in-air biomimetic sonar applications, allowing thus to develop new algorithms for object detection, recognition and navigation based on frequency modulation algorithms. Technological...
Some of recent technological advances in electronics need very compact magnetic materials. The paper presents the morphology and the magnetic properties of very dense polycrystalline magnetic materials obtained from co-precipitated manganese ferrite nanoparticles. The ferrite nanoparticles, with average diameter in the range of 13–25nm, were obtained through an original low-cost co-precipitation route...
In autonomous vehicles, e.g. mobile robots, the sonar is frequently used for navigation. There are some drawbacks of the system, generated mainly from the small bandwidth of the ultrasonic transducers and from high absorption of ultrasounds in air. Currently, there are two research directions under development: (a) the use of sensors based on new materials as EMFi, with wide frequency range; (b) the...
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