The temperature dependence of electrical conduction current in additive-free poly-L-lactic acid was measured. Although the current obeys the Arrhenius formula, a hump appears under some conditions, depending on whether the temperature is being ascended or descended, and also on whether the sample wa...

We develop the THz ellipsometric technique to determine the dielectric tensor using THz time-domain magneto-optical measurements. The technique is applicable for magneto-optical measurements at an arbitrary incidence angle in materials with large magnetic anisotropy

A novel concept stemming from the coplanar waveguide (CPW) technique is proposed for wideband dielectric measurement in the frequency range up to millimeter-waves. The new approach uses surface fields of the coupled CPW slots which interact dynamically with lossless or highly lossy material under te...

A method is presented for determining the complex permittivity of materials using an open-ended coaxial probe. A two-dimensional second-order rational polynomial function is used to construct the aperture admittance. The inverse problem of determining permittivity reduces to the solution of a quadra...

The permittivity of a thin flat dielectric is calculated from the characteristics of the H-011 resonance in a cylindrical cavity with the specimen inserted an the central transverse plane. Dielectric constants from 1 to 300 and loss tangents as low as 30/spl plusmn/10 ppm have been determined. No ir...