Novel behaviors arising from the coupling between the built-in surface electric field, piezoelectricity, electron-hole pairs and external light beam were observed in GaN nanorods. An increase in the optical excitation density resulted in a blueshift in the photoluminescence spectra and a redshift in the frequency of the GaN A(1)(LO) phonon. The underlying mechanism was attributed to the screeni...

Quantum-confined Stark eff'ects (QCSE's) on exciton-decay dynamics in CdSo 3iSeo 69 semiconductor quantum dots (QD's) embedded in a glass matrix have been studied by time-resolved photoluminescence emission spectroscopy under different electric fields up to 2. 5 X 10 V/cm. Under both conditions, in the absence or in the presence of an applied electric field, the exciton luminescence decay in QD...

introduction: public and occupational exposure to extremely low frequency (elf) electric and magnetic fields induced by electrical equipment is a significant issue in the environment and at the workplace due to their potential health effects on public health. the purpose of this study was assessment of the electric and magnetic fields intensities and determination of mental and psychological ef...

We apply the transformation of mixing azimuthal with wrapped coordinate to the 11D Mtheory with a stack N M5-branes to find the spacetime of a stack of N D4-branes with magnetic field in 10D IIA string theory, after the Kaluza-Klein reduction. With (without) performing the T-duality and taking the near-horizon limit the background becomes the Melvin magnetic field deformed AdS5×S (AdS6×S). We a...

Insulator strings with several material and profiles are very common in overhead transmission lines. However, the electric field and voltage distribution of insulator string is uneven which may easily lead to corona, insulators’ surface deterioration and even flashover. So the calculation of the electric field and voltage distribution along them is a very important factor in the operation time....

Using Hartree-Fock Su-Sheriffer-Heeger (HF-SSH) model, we have studied the dependence of the energies of the ground (magnetic triplet state) and the first exited (nonmagnetic singlet state) states of the size-2 trigonal zigzag graphene nanoflake (size-2 NF) on the intensity of an external in plane static electric field at zero temperature. We identify a transition from the magnetic triplet stat...

We study a parallel Monte Carlo (MC) method for investigation of a quantum kinetic equation which accounts for the action of the electric field during the process of electron-phonon interaction. Optimization of the presented parallel algorithm is done using variance reduction techniques and parallel random sequences from the Scalable Parallel Random Number Generator (SPRNG) library. The develop...

Electrohydrodynamic effect on natural convection in horizontal channels is investigated from a numerical point of view. The EHD effect is induced by narrow strip electrodes placed at the bottom wall of the channel. The channel is subjected in a first stage only to the electric forces, and in a second stage to the simultaneous action of a temperature gradient and an electric field. The interacti...

Use of Diamond for electronic applications was started for development of photoconductive detectors. However limitations in size and control of properties naturally limited the use of Diamond to a few specialty applications. With the development of Diamond synthesis from vapour phase has come a more serious interest in developing diamond based electronic devices. Diamond (band gap energy = 5. 6...