Monte Carlo simulations of lung equivalent materials often involve the density being artificially lowered rather than a true tissue (or plastic) and air composition simulated. This study used atomic analysis to test suitability this method. Atomic was also 3D printing PLA or ABS with simulate tissue. It found that there minimal difference when using an density, 0.8 % in Nitrogen largest observe...

The enthalpy relaxation behavior of Ti40Zr25Ni8Cu9Be18 bulk metallic glass follows the general characteristics of that for amorphous materials although its unique quenched-in nuclei/amorphous matrix structure: the annealing time dependence of recovery enthalpy follows a stretched exponential function with the mean relaxation time obeying an Arrhenius law, which may be due to the longer incubati...

Resistive Random Access Memories based on metal-oxide polymer diodes are characterized. The dynamic behavior is studied by recording currentvoltage characteristics with varying voltage ramp speed. It is demonstrated that these organic memory devices have an internal capacitive double-layer structure, which inhibits the switching at high ramp rates (1000 V/s). This behavior is modeled and explai...

Three-dimensional printing technology has the advantage of facilitating construction complex three-dimensional shapes. For this reason, it is widely used in medical and radiological fields. However, few materials with high electron density similar to that bone exist for fabricating a human phantom. In study, commercially available filament were an FDM 3D printer perform delivery quality assuran...

Techniques for numerical analysis and equivalent circuit modeling for loss performance of reflectarray antennas are presented in this paper. Numerical equations are employed to find out the values of reflection loss at resonant frequency and a novel set of predictions is applied to acquire the reflection loss curve for different materials. Equivalent circuit modeling using lumped components has...

To connect different scale models in the multi-scale problem of microwave use, equivalent material constants were researched numerically by a three-dimensional electromagnetic field, taking into account eddy current and displacement current. A volume averaged method and a standing wave method were used to introduce the equivalent material constants; water particles and aluminum particles are us...