Multi-Ferroic Polymer Nanoparticle Composites for Next Generation Metamaterials
Final rept. 2 May 2012-1 Jun 2014
MARYLAND UNIV COLLEGE PARK
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The effort is a result of team work from the collaboration of Prof Kofinas 201PI202, Prof. Piao of Seoul National University, Korea and Prof. Begin-Colin of University of Strasbourg, France. It is desirable for a dielectric material of an RF antenna to have the highest possible permeability for the scaling factor, and lowest possible magnetic loss for the radiation efficiency. To reduce the dielectric loss, and achieve high permittivity and permeability at the frequency range of 1 MHz- 1 GHz, the PI was able to assemble corona magnetite Nanoparticles successfully. The permeability values achieved by composites made from collectively assembled corona magnetite nanoparticles are significantly higher than the existing magnetite-polymer composites and magnetite-PDMS composites. Additionally, the composites prepared with collectively assembled corona magnetite nanoparticles exhibit an extraordinary magnetic resonance, which changes with the particle size of magnetite nanoparticles. The PI will continue to develop composites that could be utilized for developing highbandwidth radio frequency antennas.
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