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Materials, Volume 17, Issue 16

August-2 2024 - 284 articles

Cover Story: β-Ga2O3 is an ultra-wide bandgap semiconductor. Undoped Ga2O3 emits light in the UV range that can be tuned to the visible region by rare-earth dopants. In this work, the crystal lattice recovery of β-Ga2O3 crystals implanted with Yb and the optical activation of Yb ions were studied. Post-implantation annealing at various temperatures and different atmospheres revealed the strongest optical response of Yb for the oxygen annealed crystals, which was four times lower for the argon-annealed samples. For both the RT- and HT-implanted samples, as well as the RT-implanted and nitrogen-annealed samples, Yb3+ emissions were almost absent. This shows that crystal lattice recovery, which is perfect for HT implantation, is not a sufficient condition for achieving a strong optical response from the β Ga2O3:Yb system, suggesting an important role of oxygen in activating RE ion luminescence. View this paper
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Articles (284)

  • Article
  • Open Access
1 Citations
1,461 Views
17 Pages

22 August 2024

The corrosion protection of tool steel surfaces is of significant importance for ensuring cutting precision and cost savings. However, conventional surface protection measures usually rely on toxic organic solvents, posing threats to the environment...

  • Article
  • Open Access
3 Citations
1,365 Views
22 Pages

Waste for Product—Synthesis and Electrocatalytic Properties of Palladium Nanopyramid Layer Enriched with PtNPs

  • Magdalena Luty-Błocho,
  • Adrianna Pach,
  • Dawid Kutyła,
  • Anna Kula,
  • Stanisław Małecki,
  • Piotr Jeleń and
  • Volker Hessel

22 August 2024

The presented research is the seed of a vision for the development of a waste-for-product strategy. Following this concept, various synthetic solutions containing low concentrations of platinum group metals were used to model their recovery and to pr...

  • Article
  • Open Access
1 Citations
1,593 Views
10 Pages

22 August 2024

The processes of hemp bast fiber retting, forming, and drying offer the opportunity for value-added products such as natural fiber-reinforced composites. A new process for the retting of raw bast fibers through enzyme-triggered self-cultured bacteria...

  • Article
  • Open Access
1 Citations
1,339 Views
20 Pages

22 August 2024

Corrosion of steel is an issue that cannot be ignored in contemporary society. Due to large-scale corrosion, it is urgent to develop a surface treatment process that enhances the corrosion resistance of steel, allowing for application in various scen...

  • Article
  • Open Access
3 Citations
1,898 Views
13 Pages

22 August 2024

The commonly used aluminum–copper alloys in industry are mainly rolled plates and extruded or drawn bars. The aluminum–copper alloys’ anisotropy generated in the manufacturing process is unfavorable for subsequent applications. Its...

  • Article
  • Open Access
3 Citations
2,128 Views
11 Pages

Silicon Carbide Nanowire Based Integrated Electrode for High Temperature Supercapacitors

  • Shiyu Sha,
  • Chang Liang,
  • Songyang Lv,
  • Lin Xu,
  • Defu Sun,
  • Jiayue Yang,
  • Lei Zhang and
  • Shouzhi Wang

22 August 2024

Silicon carbide (SiC) single crystals have great prospects for high-temperature energy storage due to their robust structural stability, ultrahigh power output, and superior temperature stability. However, energy density is an essential challenge for...

  • Article
  • Open Access
2 Citations
1,374 Views
15 Pages

22 August 2024

The development of eco-friendly elastomeric materials has become an important issue in recent years. In this work, thermoplastic elastomer samples of an ethylene–norbornene copolymer (EN) with coffee and tea biofillers mixed with typical filler...

  • Article
  • Open Access
1 Citations
1,776 Views
18 Pages

Temperature Effect on Deformation Mechanisms and Mechanical Properties of Welded High-Mn Steels for Cryogenic Applications

  • Minha Park,
  • Gang Ho Lee,
  • Geon-Woo Park,
  • Gwangjoo Jang,
  • Hyoung-Chan Kim,
  • Sanghoon Noh,
  • Jong Bae Jeon,
  • Byoungkoo Kim and
  • Byung Jun Kim

22 August 2024

High-manganese steel (high-Mn) is valuable for its excellent mechanical properties in cryogenic environments, making it essential to understand its deformation behavior at extremely low temperatures. The deformation behavior of high-Mn steels at extr...

  • Article
  • Open Access
4 Citations
1,440 Views
19 Pages

22 August 2024

In the article, the authors presented the results of research on the assessment of the effect of selected mineral additives on the strength properties of the standard mortar. The modification of the composition of the standard mortar made on the basi...

  • Article
  • Open Access
5 Citations
2,898 Views
17 Pages

Activated Carbon for CO2 Adsorption from Avocado Seeds Activated with NaOH: The Significance of the Production Method

  • Joanna Siemak,
  • Grzegorz Mikołajczak,
  • Magdalena Pol-Szyszko and
  • Beata Michalkiewicz

22 August 2024

The rise in atmospheric greenhouse gases like CO2 is a primary driver of global warming. Human actions are the primary factor behind the surge in CO2 levels, contributing to two-thirds of the greenhouse effect over the past decade. This study focuses...

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Materials - ISSN 1996-1944