We investigate the feasibility of non-invasive ultra-wideband microwave hyperthermia treatment of breast cancer using three-dimensional (3-D) breast phantoms with anatomical and dielectric-properties realism. Space-time transmit beamforming is used to generate the signals transmitted by a hemispherical antenna array into the breast. The performance of this approach is evaluated for beamformers ...

Backward wave with anti-parallel phase and group velocities is one of the basic properties associated with negative refraction and sub-diffraction image that have attracted considerable interest in the context of photonic metamaterials. It has been predicted theoretically that some plasmonic structures can also support backward wave propagation of surface plasmon polaritons (SPPs), however dire...

The high frequency conductivity of thin metallic and graphitic nano-films attracts interest due to many potential applications in spin electronics, electromagnetic shielding, flexible antennas, displays, and in solar cells. Surface morphology of thin conducting nano-films typically consists of an isolated clustering structure, which can evolve into a conducting percolated network [1]. The high ...