Magnetodielectric Nanocomposite Films for RF Applications

Requirements for improved military communication systems operating in the GHz frequency range, such as low cost, lightweight antennas and surveillance equipment with low physical or conformal profiles, demand the development of new materials with improved electromagnetic properties. To meet this need, Luna Innovations will develop magnetodielectric nanocomposites consisting of a polymer (dielectric) matrix engineered with one or more magnetic (magneto) nanofillers. The focus of this Phase I program is to demonstrate the feasibility of a large area magnetodielectric nanocomposite film with materials properties suitable for antenna applications. To achieve this, Luna Innovations will design and prepare of unique magnetic nanofillers with tunable magnetic properties and will develop fabrication methods to prepare nanocomposite film systems incorporating these designed nanofillers into the polymer matrix. Characterization of both the filler and the magnetodielectric nanocomposite properties over a range of materials compositions and morphology will be conducted with the primary focus on the high frequency (GHz) electromagnetic properties such as the permittivity, permeability, and loss tangent. Physical attributes that lead to optimal magnetic and electromagnetic behavior will be identified and particular emphasis will be given to meeting the physical property requirements necessary to satisfy Air Force RF application requirements.