Resumo:
Technology advances have allowed and made easier the miniaturization of the shape and size
of electronic components to operate low power ranges. On the one hand, the trend of creating
complex electronic systems with a high degree of processing, such as autonomous devices,
medical apparatus and wireless sensor networks supplied by batteries, requiring low power to
operate in the range from dozens of microwatt to hundreds of miliwatts appears as actions to
reduce energy consumption. On the other hand, the Brazilian Electrical and Electronics Industry
Association (ABINEE) estimates that the sale of batteries for residential use is around 1.2
billion units per year and the disposal of millions of these, mostly irregular, due to end of life
or loss of charge after several recharges. In nanotechnology scale, new opportunities of power
supply have launched for assistive technology and accessibility devices. The present work aims
to build a microgenerator device working from the kinetic magnetic fluids energy based on a
mixture of polyglycerol dendrimers (PGLyD) with superparamagnetic iron oxide nanoparticles
(SPIONs) under an applied magnetic field, generating electric current of the order of
microAmpère. The experimental results of the prototype proved to be promising and
satisfactory.
