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Nanomaterials, Volume 12, Issue 17

September-1 2022 - 196 articles

Cover Story: Two series of β-NaYF4:Ln3+ nanoparticles (Ln = La–Nd, Sm–Lu) containing 20 at. % and 40 at. % of Ln3+ with well-defined morphology and size were synthesized via a facile citric-acid-assisted hydrothermal method using rare-earth chlorides as the precursors. The materials were composed from the particles that have a shape of uniform hexagonal prisms with an approximate size of 80–1100 nm. The mean diameter of NaYF4:Ln3+ crystals non-monotonically depended on the lanthanide atomic number, and the minimum size was observed for Gd3+-doped materials. At the same time, the unit cell parameters decreased from La to Lu according to XRD data analysis. The diameter-to-length ratio increased from La to Lu in both studied series. The effect of the doping lanthanide(III) ion nature on particle size and shape was explained in terms of crystal growth dynamics. View this paper
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Articles (196)

  • Article
  • Open Access
4 Citations
2,385 Views
10 Pages

5 September 2022

In this paper, the formation of rhombic ZnO microrods surrounded by ZnO nanorods was realized on the surfaces of zinc foils using a hydrothermal method. The photocatalytic degradation of Rhodamine B solution was used to test the photocatalytic perfor...

  • Article
  • Open Access
6 Citations
3,012 Views
10 Pages

Organic Photodetectors with Extended Spectral Response Range Assisted by Plasmonic Hot-Electron Injection

  • Aiping Zhai,
  • Chenjie Zhao,
  • Deng Pan,
  • Shilei Zhu,
  • Wenyan Wang,
  • Ting Ji,
  • Guohui Li,
  • Rong Wen,
  • Ye Zhang and
  • Yuying Hao
  • + 1 author

5 September 2022

Organic photodetectors (OPDs) have aroused intensive attention for signal detection in industrial and scientific applications due to their advantages including low cost, mechanical flexibility, and large-area fabrication. As one of the most common or...

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

Pyridine vs. Imidazole Axial Ligation on Cobaloxime Grafted Graphene: Hydrogen Evolution Reaction Insights

  • Ioanna K. Sideri,
  • Georgios Charalambidis,
  • Athanassios G. Coutsolelos,
  • Raul Arenal and
  • Nikos Tagmatarchis

5 September 2022

While cobaloximes have been protagonists in the molecular (photo)catalytic hydrogen evolution reaction field, researchers originally shed light on the catalytically active metallic center. However, the specific chemical environment of cobalt, includi...

  • Article
  • Open Access
3 Citations
2,470 Views
14 Pages

Circularly Polarized Antenna Array with Decoupled Quad Vortex Beams

  • Shuo Xu,
  • He-Xiu Xu,
  • Yanzhao Wang,
  • Jian Xu,
  • Chaohui Wang,
  • Zhichao Pang and
  • Huiling Luo

5 September 2022

Achieving multiple vortex beams with different modes in a planar microstrip array is pivotal, yet still extremely challenging. Here, a hybrid method combining both Pancharatnam−Berry (PB) phase that is induced by the rotation phase and excitati...

  • Article
  • Open Access
5 Citations
2,524 Views
15 Pages

5 September 2022

Different hierarchical porous In2O3 nanostructures were synthesized by regulating the hydrothermal time and combining it with a self-pore-forming method. The gas-sensing test results show that the response of the sensor based on In2O3 obtained after...

  • Article
  • Open Access
28 Citations
5,865 Views
9 Pages

The 3.4 GHz BAW RF Filter Based on Single Crystal AlN Resonator for 5G Application

  • Rui Ding,
  • Weipeng Xuan,
  • Shurong Dong,
  • Biao Zhang,
  • Feng Gao,
  • Gang Liu,
  • Zichao Zhang,
  • Hao Jin and
  • Jikui Luo

5 September 2022

To meet the stringent requirements of 5G communication, we proposed a high-performance bulk acoustic wave (BAW) filter based on single crystal AlN piezoelectric films on a SiC substrate. The fabrication of the BAW filter is compatible with the GaN hi...

  • Article
  • Open Access
23 Citations
4,821 Views
15 Pages

Enhancing the Efficiency of Perovskite Solar Cells through Interface Engineering with MoS2 Quantum Dots

  • Zhao Luo,
  • Tan Guo,
  • Chen Wang,
  • Jifan Zou,
  • Jianxun Wang,
  • Wei Dong,
  • Jing Li,
  • Wei Zhang,
  • Xiaoyu Zhang and
  • Weitao Zheng

5 September 2022

The interface of perovskite solar cells (PSCs) determines their power conversion efficiency (PCE). Here, the buried bottom surface of a perovskite film is efficiently passivated by using MoS2 quantum dots. The perovskite films prepared on top of MoS2...

  • Article
  • Open Access
6 Citations
4,088 Views
16 Pages

5 September 2022

The reaction time, temperature, ratio of precursors, and concentration of sodium citrate are known as the main factors that affect the direct synthesis process of SiO2@Au based on the chemical reaction of HAuCl4 and sodium citrate. Hence, we investig...

  • Article
  • Open Access
30 Citations
3,456 Views
18 Pages

Enhancing the Melting Process of Shell-and-Tube PCM Thermal Energy Storage Unit Using Modified Tube Design

  • Aissa Abderrahmane,
  • Naef A. A. Qasem,
  • Abed Mourad,
  • Mohammad Al-Khaleel,
  • Zafar Said,
  • Kamel Guedri,
  • Obai Younis and
  • Riadh Marzouki

5 September 2022

Recently, phase change materials (PCMs) have gained great attention from engineers and researchers due to their exceptional properties for thermal energy storing, which would effectively aid in reducing carbon footprint and support the global transit...

  • Article
  • Open Access
20 Citations
3,808 Views
12 Pages

5 September 2022

Inkjet printing of high-viscosity (up to 105 mPa·s) nanosilver inks is an interesting emerging technology to achieve the 3D fully printed fabrication of electronic products. The highly viscous force of the ink makes it impossible to achieve dr...

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Nanomaterials - ISSN 2079-4991