Dielectric characterization and microwave interferometry in HMX-based explosives

Microwave Dielectric Characterization of Carbon Nanotube Networks

The Fate of Nitroaromatic (tnt) and Nitramine (rdx and Hmx) Explosives in Fractured and Weathered Soils

We investigated the fate of explosives compounds in slurries containing fractured and weathered soil particles. Three soils were crushed with a piston to emulate detonation-induced fracturing. We used X-ray diffraction, scanning electron microscopy and gas adsorption surface area measurements to quantify the mineralogies and surfaces of the weathered and fractured soil particles. Soil batch slu...

Efficient Microwave Heating and Dielectric Characterization of Microfluidic Systems

ABSTRACT This paper presents a 2.45 GHz microwave cavity resonator with the novel dual function of both sensitive dielectric characterisation and directed, volumetric heating of fluids in a microfluidic chip. This method is shown to have a higher efficiency (>90 % for methanol), higher rate of heating and more accurate control than previous microfluidic microwave heating methods [1], [2]. The s...

Dielectric Characterization of Materials at Microwave Frequency Range

In this study a coaxial line was used to connect a microwave-frequency Network Analyzer and a base moving sample holder for dielectric characterization of ferroelectric materials in the microwave range. The main innovation of the technique is the introduction of a special sample holder that eliminates the air gap effect by pressing sample using a fine pressure system control. The device was pre...

Microwave Imaging : Characterization of Unknown Dielectric or Conductive Materials

Microwave imaging problem consists of reconstructing unknown objects from measurements of the scattered field that results from their interaction with a known interrogating wave. This problem is nonlinear and ill-posed. The most classical methods to solve this inverse problem are based on the linearization of the model (by using Born or Rytov approximation) or work directly on the nonlinear map...