First-principles calculations are performed to investigate the structures, electrical, and magnetic properties of compressive BiFeO3 films under electric-field and pressure perpendicular to the films. A reversible electric-field-induced strain up 10% is achieved in the compressive BiFeO3 films. The giant strain originates from rhombohedral-tetragonal (R-T) phase transition under electric-filed,...

Rydberg atoms based quantum microwave measurement technology has significant advantages such as self-calibration, traceability, high sensitivity and stable uniformity of measurement. In this work, from the dimension traditional electromagnetic theory, an electric field local enhancement technique for measurements is developed to improve receiver. The theoretical basis method comes different mec...

magnetic field effects on the elastic response of polymeric piezoelectric cylinder reinforced with carbon nanotubes (cnts) is studied. the cylinder is subjected to internal pressure, a constant electric potential difference at the inner and outer surfaces, thermal and magnetic fields. the mori-tanaka model is used for obtaining the equivalent material properties of the cylinder. based on the ch...

We have developed a second-harmonic-generation (SHG) microscopy system whose electric filed at the focus is controlled three-dimensionally in order to observe three-dimensional molecular orientation with high spatial resolution. Figure 1 shows the developed system. The system consists of a femtosecond laser to induced nonlinear optical phenomenon (SHG), a parallel-aligned liquid-crystal spatial...

The influence of non-uniform electric filed on Fe3O4-Ethylene glycol nanofluid hydrothermal treatment in an enclosure with sinusoidal upper and moving lower walls is investigated in this study. Control Volume based Finite Element Method (CVFEM) is utilized to simulate in the presented model. Numerical investigation are conducted for the sundry parameters such as Reynolds number; nanoparticle vo...

Electron beams narrowly collimated to the magnetic field line were observed continuously from a downward current region to an auroral acceleration region (i.e., upward current region). They were well correlated with lowfrequency electric field fluctuations in the auroral acceleration region as well as in the adjacent downward current region. Magnetic field fluctuations were found only in the do...

Ferroelectric materials can be used for the ferroelectric random access memory (FeRAM) For the miniaturization the thin film structures are used in general. However, there is the critical thickness of ferroelectric materials, below which ferroelectricity abruptly disappears. Besides, the depolarization field, the epitaxial strain, the termination of the ferroelectric film, and the electric file...

although in recent two decades, the concept of dielectric barrier discharges (dbds) have been developed in ozone production well, air pollution control, plasma screens and control of chemical, and biological and medical processes, employment of this concept for high voltage applications to improve insulation performance as an alternative to the pressurized gas-insulated systems (gis) utilizing ...