In last two decades, rapid development in the field of terahertz (THz) technology has opened new possibilities for creating innovative imaging and sensing systems. Although the applications of THz technology in different sectors constantly increase, the construction industry lags behind them. The aim of this article is to review the current applications of THz spectroscopy in research and industry related to construction and building materials, along with the key drawbacks of technology and recommendations for future use. We demostrateted that THz spectroscopy and imaging have promising potential and provide many opportunities for applications in construction and building materials characterization.
COBISS.SI-ID: 28098599
$^{14}$N nuclear quadrupole resonance (NQR) in two known polymorphs of famotidine was measured. At room temperature, seven quadrupolar sets of transition frequencies ($\nu^{+}$ , $\nu^{-}$, and $\nu^{0}$) corresponding to seven different nitrogen sites in the crystal structure of each of the two polymorphs were found. This confirms the expected ability of NQR to distinguish polymorph B from its analog A. NQR can also measure their ratio in a solid mixture and in the final dosage form, that is, a tablet. The NQR frequencies, line shapes, and tentative assignation to all seven molecular $^{14}$N atoms were obtained. Unravelment of these two entangled NQR spectra presents a valuable contribution to the NQR database and enables studies of some possible correlations therein. Moreover, nondestructive $^{14}$N NQR studies of commercial famotidine tablets can reveal some details of the drug fabrication process connected with compression.
COBISS.SI-ID: 17097049
We discovered the first superconducting highentropy alloy the TaNbHfZrTi system [3], showing a high superconducting transition temperature (for a metallic system) of 7.3 K and a large upper critical field of 8.2 T. The superconducting phase was demonstrated to be close to a BCS–type, which employs an electron–phonon coupling to create Cooper pairs.
COBISS.SI-ID: 27907879
Based on the results of the infrared thermography of 51 artificially created defects - voids and delaminations - in concrete, it was shown that it is possible to detect defects at depths that are equal or less than the defect size D using the thermal contrast method. By applying the phase contrast method, an increase of 50% in the maximum depth for a given defect size D was achieved. Delaminations containing thin air gaps were detected with the same success as much larger voids of the same cross section.
COBISS.SI-ID: 7065697
Diluted magnetic semiconductors possessing intrinsic static magnetism at high temperatures represent a promising class of multifunctional materials with high application potential in spintronics and magneto-optics. In the hexagonal Fe-doped diluted magnetic oxide, 6HBaTiO3, room-temperature ferromagnetism has been previously reported. Our results demonstrate that the intricate static magnetism of the hexagonal phase is not intrinsic, but rather stems from sparse strain-induced pseudocubic regions. We point out the vital role of internal strain in establishing defect ferromagnetism in systems with competing structural phases.
COBISS.SI-ID: 28275751