Self-Assembling of Multilayered Polymorphs with Ion Beams.

Polymorphism determines significant variations in materials' properties by lattice symmetry variation. If they are stacked together into multilayers, polymorphs may work as an alternative approach to the sequential deposition of layers with different chemical compositions. However, selective polymorph crystallization during conventional thin film synthesis is not trivial; changes of temperature or pressure when switching from one polymorph to another during synthesis may cause degradation of the structural quality.

Impact of Annealing in Various Atmospheres on Characteristics of Tin-Doped Indium Oxide Layers towards Thermoelectric Applications.

The aim of this work was to investigate the possibility of modifying the physical properties of indium tin oxide (ITO) layers by annealing them in different atmospheres and temperatures. Samples were annealed in vacuum, air, oxygen, nitrogen, carbon dioxide and a mixture of nitrogen with hydrogen (NHM) at temperatures from 200 °C to 400 °C. Annealing impact on the crystal structure, optical, electrical, thermal and thermoelectric properties was examined.

Investigation on molecular and biomolecular spectroscopy of the novel 2BCA molecule to analyse its biological activities and binding interaction with nipah viral protein.

The molecule of 2-Biphenyl Carboxylic Acid (2BCA), which contains peculiar features, was explored making use of density functional theory (DFT) and experimental approaches in the area of quantum computational research. The optimised structure, atomic charges, vibrational frequencies, electrical properties, electrostatic potential surface (ESP), natural bond orbital analysis and potential energy surface (PES) were obtained applying the B3LYP approach with the 6-311++ G (d,p) basis set..

Investigating Stable Low-Energy Gallium Oxide (GaO) Polytypes: Insights into Electronic and Optical Properties from First Principles.

This study provides a comprehensive analysis of the electronic and optical properties of low-energy gallium oxide (GaO) polytypes not considered earlier. Among these polytypes, the monoclinic structure (β-GaO) holds significant relevance for both research and practical applications due to its superior stability under typical conditions. The primary aim of this research is to identify new and stable GaO polytypes that may exist under zero-temperature and zero-pressure conditions.

Influence of Post Processing on Thermal Conductivity of ITO Thin Films.

This work presents the influence of post processing on morphology, thermal and electrical properties of indium tin oxide (ITO) thin films annealed at 400 °C in different atmospheres. The commercially available 170 nm thick ITO layers deposited on glass were used as a starting material. The X-ray diffraction measurements revealed polycrystalline structure with dominant signal from (222) plane for all samples.

Interplay of the disorder and strain in gallium oxide.

Ion irradiation is a powerful tool to tune properties of semiconductors and, in particular, of gallium oxide (GaO) which is a promising ultra-wide bandgap semiconductor exhibiting phase instability for high enough strain/disorder levels. In the present paper we observed an interesting interplay between the disorder and strain in monoclinic β-GaO single crystals by comparing atomic and cluster ion irradiations as well as atomic ions co-implants. The results obtained by a combination of the channeling technique, X-ray diffraction and theoretical calculations show that the disorder accumulation in β-GaO exhibits superlinear behavior as a function of the collision cascade density.

Outcomes of retrograde intrarenal surgery in renal calculi of varying size.

Introduction: Technological advancements have made it possible to attempt retrograde intrarenal surgery (RIRS) in patients with large renal calculi. The objective of this study was to compare the intraoperative adverse events, postoperative complications and stone free rates (SFR) of RIRS in patients with renal calculi of varying sizes.

Methods: Patients who underwent RIRS for renal calculi between January 2016 and June 2020 were categorized into six size groups according to the longest dimension or cumulative measurement of the longest dimension of calculi as follows: Group 1 (1-9 mm), Group 2 (10-19 mm), Group 3 (20-29 mm), Group 4 (30-39 mm), Group 5 (40-49 mm) and Group 6 (≥50 mm).

Ultrasound-guided supine mini-percutaneous nephrolithotomy in ectopic pelvic kidney.

Management of urolithiasis in an ectopic pelvic kidney is challenging and laparoscopic pyelolithotomy and laparoscopy-guided percutaneous nephrolithotomy (PCNL) are commonly favored options. We report a case of ultrasound-guided supine mini-PCNL in ectopic pelvic kidney in an adolescent female. Complete stone clearance was achieved with an uneventful postoperative period.

Disorder-Induced Ordering in Gallium Oxide Polymorphs.

Polymorphs are common in nature and can be stabilized by applying external pressure in materials. The pressure and strain can also be induced by the gradually accumulated radiation disorder. However, in semiconductors, the radiation disorder accumulation typically results in the amorphization instead of engaging polymorphism.

Laparoscopic appendicular interposition ureteroplasty for mid-ureteral defect.

Patients with ureteral defects and salvageable renal units present a challenge in reconstructive urology. Vermiform appendix interposition is an option in the management of mid-ureteral defects that can not be managed by primary ureteroureterostomy. Laparoscopic appendicular interposition ureteroplasty is a technically demanding and an infrequently attempted procedure.

Comparison of whole-body bone scintigraphy with axial skeleton magnetic resonance imaging in the skeletal evaluation of carcinoma prostate.

Introduction: Whole-body bone scintigraphy (WBBS) is considered to be the standard of care in the initial skeletal evaluation of patients with carcinoma prostate. Magnetic resonance imaging (MRI) is a potential alternative technique for detecting bone metastasis. The objective of this study was to compare the diagnostic performance of WBBS with a single-photon emission computed tomography-computed tomography (SPECT-CT) correlation of the suspicious WBBS lesions to the axial skeleton (AS)-MRI in diagnosing bone metastasis in patients with carcinoma prostate.

Reply to Comment on 'Nanoscale mapping of optical band gaps using monochromated electron energy loss spectroscopy'.

We respond to the comment by Thomas Walther and reaffirm the findings of our original article.

Band gap maps beyond the delocalization limit: correlation between optical band gaps and plasmon energies at the nanoscale.

Recent progresses in nanoscale semiconductor technology have heightened the need for measurements of band gaps with high spatial resolution. Band gap mapping can be performed through a combination of probe-corrected scanning transmission electron microscopy (STEM) and monochromated electron energy-loss spectroscopy (EELS), but are rare owing to the complexity of the experiments and the data analysis. Furthermore, although this method is far superior in terms of spatial resolution to any other techniques, it is still fundamentally resolution-limited due to inelastic delocalization of the EELS signal.

Nanoscale mapping of optical band gaps using monochromated electron energy loss spectroscopy.

Using monochromated electron energy loss spectroscopy in a probe-corrected scanning transmission electron microscope we demonstrate band gap mapping in ZnO/ZnCdO thin films with a spatial resolution below 10 nm and spectral precision of 20 meV.

Fluorine doping: a feasible solution to enhancing the conductivity of high-resistance wide bandgap Mg0.51Zn0.49O active components.

N-type doping of high-resistance wide bandgap semiconductors, wurtzite high-Mg-content MgxZn1-xO for instance, has always been a fundamental application-motivated research issue. Herein, we report a solution to enhancing the conductivity of high-resistance Mg0.51Zn0.

Thermal evaporation processing of nano and submicron tin oxide rods.

Nano and submicron rods of semiconductor tin oxide (SnO2) have been synthesized via thermal evaporation technique. Various substrates such as oxidized silicon (Si/SiO2), porous alumina (Al2O3), oxidized and anodized titanium (Ti/TiO2), with the sputtered platinum (Pt) catalyst, have been utilized for this purpose. The effect of Pt sputtering time and the nature of the substrate on the size distribution and the morphology of the SnO2 rods and their substrate-surface-coverage have been investigated.