Biosynthesis and Study of Microwave Radiation Absorption by Ilmenite Nanoparticles

Nanostructured radar absorbing materials (RAMs) have received steadily growing interest because of their fascinating properties and various applications compared with the bulk or micronized counterparts. These nanostructured materials have increased surface area, number of dangling bond atoms and unsaturated co -ordination on surface lead to interface polarization, multiple scatter and absorbing more microwave. In this paper, new method was developed to produce ilmenite nanoparticles. Ilmenite nanoparticles were synthesized in the laboratory under microbial environment in presence of low magnetic field. This process could provide an easy and inexpensive method for the preparation of ilme nite nanoparticles. They possess remarkable electrical, mechanical, optical, thermal and chemical properties and low cost material which make them a perfect fit for many engineering applications. Biologically synthesized ilmenite nanoparticles were used as microwave absorbent material to study the microwave properties like reflection coefficient and return loss. The results showed that these nanostructured ilmenite particles can be used to design multilayer radar absorbing materials.