Cheng, Lu Zheng, Wei Jia, Lemin Huang, Feng
Published in
Heliyon

Mid-infrared reflection spectra of c- and m-plane bulk AlN show a reststrahlen band related to the formation of phonon polaritons. However, it is worth noting that there are additional hump- and spike-shaped peaks in the spectra, which cannot be explained by the phonon-polaritons model applicable to optically isotropic crystals. Here, considering t...

Taufiq, Ahmad Bahtiar, Syamsul Saputro, Rosy Eko Yuliantika, Defi Hidayat, Arif Sunaryono, Sunaryono Hidayat, Nurul Samian, Samian Soontaranon, Siriwat
Published in
Heliyon

Mn1-x Zn x Fe2O4 ferrofluids were produced from natural sand for magnetic sensors and radar absorbing materials. The X-ray diffraction data showed that the Zn partially substituted the Mn and Fe ions to construct a spinel structure. The increasing Zn composition decreased the lattice parameters of the structure. The transmission electron microscopy...

Maleval, Francis

A mirror built here, by virtue of an iterative process, a geometry from a conceptual object. This dynamic, served by the Noether’s theorem, generates the universal constants.

Akinbolati, A. Ajewole, M.O.
Published in
Heliyon

Electrical engineering; Optics; Electromagnetism; Statistical physics; Wave physics; Physics methods; Digital terrestrial television (DTTV); Path losses; Modeling; Tropospheric parameters; Modified Okumura-Hata model.

Barak, Shlomo

All past efforts to unify gravitation and electromagnetism failed because they considered energy/momentum to be the common denominator in this unification. The problem was that nobody knew how mass curves space and that charge, as we have shown in one of our papers, also curves space. It was naively believed that if mass, namely energy, curves spac...

speake, clive c. ortolan, antonello

We review the problem of transforming electromagnetic fields between inertial and rotating reference frames. We compare the method of straightforward tensor coordinate transformations adopted by Schiff in his well-known paper of 1939 with the method of Orthogonal Tetrads (OT) that was applied to this problem in 1964 by Irvine. Although both methods...

Cardona, Lorena Itozaki, Hideo Jiménez, Jovani Vanegas, Nelson Sato-Akaba, Hideo
Published in
Heliyon

Electromagnetism; Nuclear physics; Nuclear quadrupole resonance; Land mines – detection; Explosives – detection; Transceiver coil

Maurice, Anthony Behel, Zacharie Russier-Antoine, Isabelle Benichou, Emmanuel Jonin, Christian Brevet, Pierre-François

Hyper Rayleigh Scattering (HRS) is a method allowing the retrieval of metallic nanoparticles morphology. It is usually conducted in a right angle geometry preventing the full determination of all the sample information. To alleviate this problem, we report experiments in this manuscript where we have employed a multi-angle geometry in order to furt...

Moya Gutierrez, Anyelo Jose

In the present article, Geophysical and Geotechnical techniques were applied to characterize the subsoil at the height of Km 68 + 500 of the main road Troncal Central del Norte (National Route 55). The geophysical techniques implemented were: Vertical Electrical Probe (SEV), Seismic Refraction Tomography (TRS) and Multichannel Surface Wave Analysis...

Antonello, Miguel Guilherme Bracarense, Alexandre Queiroz

Abstract: The difference of potential between two electrodes results in electric current breaking the dielectric barrier of the gas in this space causing a plasma discharge called electric arc. As a result, there is luminosity and an increase in temperature. Electric arc is used for welding and usually one of the electrodes is cylindrical with smal...