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Crystals, Volume 13, Issue 1

January 2023 - 154 articles

Cover Story: Low-Sr-doped hydroxyapatite powders, prepared via solid-state synthesis, were structurally characterized using complementary investigations. Morphological observations showed the presence of massive fragments (size < 20 μm). PXRD analysis highlighted the high purity of samples with the lowest Sr rates (2.5 and 5.6 wt%) and the presence of tricalcium phosphate rate (ca. 40%) in the high Sr concentration (10 wt%) sample with Ca+Sr/P<1.67. An increase in unit cell parameters was revealed, consistent with the partial substitution of smaller Ca2+ with larger Sr2+ ion. Rietveld refinement clarified that the Sr entered into the Ca1 site in low-Sr-doped samples and Ca2 in the sample with the highest Sr rate. FTIR and Raman pointed out slight band shifts as a result of the increase in the Sr dopant. View this paper
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Articles (154)

  • Article
  • Open Access
49 Citations
4,111 Views
17 Pages

Enhancing the Structural, Optical, Thermal, and Electrical Properties of PVA Filled with Mixed Nanoparticles (TiO2/Cu)

  • Ahmed N. Al-Hakimi,
  • G. M. Asnag,
  • Fahad Alminderej,
  • Ibrahim A. Alhagri,
  • Sadeq M. Al-Hazmy and
  • Talal F. Qahtan

12 January 2023

In this work, new samples of PVA-TiO2/Cu nanocomposites were prepared via the casting method. The prepared samples were examined using different analytical methods. An XRD analysis showed the semi-crystalline nature of the PVA polymer, as well as sho...

  • Article
  • Open Access
33 Citations
6,092 Views
19 Pages

Microwave-Assisted Synthesis of rGO-ZnO/CuO Nanocomposites for Photocatalytic Degradation of Organic Pollutants

  • Aklilu Guale Bekru,
  • Lemma Teshome Tufa,
  • Osman Ahmed Zelekew,
  • Juyong Gwak,
  • Jaebeom Lee and
  • Fedlu Kedir Sabir

12 January 2023

Nanomaterial-based catalytic conversion of hazardous organic pollutants into benign substances is one of the green methods employed for wastewater treatment. This study demonstrates the fabrication of (rGO-ZnO)/CuO nanocomposites (NCs) via a microwav...

  • Article
  • Open Access
3 Citations
2,625 Views
11 Pages

11 January 2023

Extensive exploration is required to deploy mineralization as a tool to develop low-cost yet efficient sustained drug release systems. Unlike previous studies which directly incorporated drug components in mineralized products, we propose an emerging...

  • Review
  • Open Access
4 Citations
3,187 Views
18 Pages

11 January 2023

Bulk nanostructured metals and alloys are finding increasing structural applications due to their superior mechanical properties. The methods that rely on the severe plastic deformation technique for effecting microstructural refinement through impos...

  • Article
  • Open Access
6 Citations
2,635 Views
18 Pages

11 January 2023

Isotropic TFT characteristics are realized in the {100}-oriented grain-boundary-free 60 nm thick Si film obtained by the continuous-wave laser lateral crystallization, where the grain- and sub-boundaries are defined as the crystallographic boundaries...

  • Article
  • Open Access
9 Citations
2,760 Views
11 Pages

11 January 2023

The uniaxial tensile behaviors of Fe-19Cr-16Mn-2Mo-0.49N and Fe-18Cr-16Mn-2Mo-0.85N high-nitrogen and nickel-free austenitic stainless steels at two strain rates of 10−2 s−1 and 10−4 s−1 were comparatively investigated. The re...

  • Article
  • Open Access
36 Citations
4,025 Views
17 Pages

11 January 2023

In the present research work we have examined the biosensing capabilities of one-dimensional photonic crystals with defects for the detection and sensing of malaria infection in humans by investigating blood samples containing red blood cells. This t...

  • Article
  • Open Access
12 Citations
2,932 Views
11 Pages

Structural, Mechanical, and Piezoelectric Properties of Janus Bidimensional Monolayers

  • Abdulrahman Mallah,
  • Mourad Debbichi,
  • Mohamed Houcine Dhaou and
  • Bilel Bellakhdhar

10 January 2023

In the present work, the noncentrosymmetric 2D ternary Janus monolayers Al2XX’(X/X’ = S, Se, Te and O), Si2XX’(X/X’ = P, As, Sb and Bi), and A2PAs(A = Ge, Sn and Pb) have been studied based on first-principles calculations. We...

  • Article
  • Open Access
6 Citations
4,014 Views
11 Pages

Investigation into the MOCVD Growth and Optical Properties of InGaN/GaN Quantum Wells by Modulating NH3 Flux

  • Zhenyu Chen,
  • Feng Liang,
  • Degang Zhao,
  • Jing Yang,
  • Ping Chen and
  • Desheng Jiang

10 January 2023

In this study, the surface morphology and luminescence characteristics of InGaN/GaN multiple quantum wells were studied by applying different flow rates of ammonia during MOCVD growth, and the best growth conditions of InGaN layers for green laser di...

  • Article
  • Open Access
8 Citations
3,367 Views
17 Pages

Low-Cost Graphene-Based Composite Electrodes for Electrochemical Oxidation of Phenolic Dyes

  • Marija Ječmenica Dučić,
  • Aleksandar Krstić,
  • Nikola Zdolšek,
  • Danka Aćimović,
  • Branislava Savić,
  • Tanja Brdarić and
  • Dragana Vasić Anićijević

10 January 2023

Electrochemical removal of organic pollutants represents an attractive methodology in water depollution. The key challenges for researchers comprise finding simple, affordable electrode materials with satisfactory efficiency in all ranges of pollutan...

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Crystals - ISSN 2073-4352