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Inverse scattering for anisotropic mirror image invariant media

Basic tools to solve an inverse scattering problem for anisotropic media are developed. A transient electromagnetic field impinges upon a slab of anisotropic dispersive medium. The scattering kernels map the incident field to the scattered fields. The inverse scattering problem is to reconstruct the components of the matrix susceptibility kernel from knowledge of the scattering kernels. The method

Waveguide measurements of the permittivity and permeability at temperatures up to 1000 C

This paper describes a method to measure the permittivity and the permeability at temperatures from room temperature up to 1000 C using a single rectangular waveguide. The hardware design of the setup that can handle these temperatures and the procedure that is required to correct for the thermal expansion is developed. This includes the sample displacement, the displacement of the calibration ref

Development of a polymer based neural probe - How to record intracortical neural activity while minimizing the tissue response.

Intracortical neural probes have in the last couple of years been developed from stiff single probes to stiff multi-electrode neural probes to flexible multi-electrode neural probes. One reason for the change in design is that more than one recording/stimulation electrode, as in the case with a single wire, is needed for more advanced studies. The stiff multi-electrode probes were fabricated using