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Crystals, Volume 13, Issue 4

April 2023 - 163 articles

Cover Story: Ni-based single-crystal (SX) superalloys with low specific weight are vital for developing aero engines with a high strength-to-weight ratio. A team in Zhejiang University have designed compositions of a series of new Ni-based superalloys with 3 wt.% Re but without W, whose specific weights are all lower than 8.4 g/cm3. SXs are successfully grown, and a typical γ/γ′ two-phase microstructure has been obtained after solid solution and aging treatments. The new SX alloys have comparable strength to commercial 2nd generation superalloys. Moreover, the topological close-packed phase does not appear at 1050 °C for up to 500 h, indicating excellent phase stability. The current work might provide scientific insights for developing Ni-based SX superalloys with low specific weight. View this paper
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Articles (163)

  • Article
  • Open Access
5 Citations
2,499 Views
13 Pages

An Attempt to Design Thermosalient Crystals by Co-Crystallization: The Twisted Angle between Aromatic Rings

  • Xingchen Hu,
  • Yuntian Xiao,
  • Luguang Qi,
  • Yunhe Bai,
  • Ying Sun,
  • Yang Ye and
  • Chuang Xie

19 April 2023

Thermosalient (TS) crystals have gained considerable attention due to their potential applications in various fields, including in actuators, sensors, energy harvesting, and artificial muscles. Herein, co-crystallization was employed to construct TS...

  • Communication
  • Open Access
1 Citations
2,545 Views
10 Pages

Angular Dependence of Guest–Host Liquid Crystal Devices with High Pretilt Angle Using Mixture of Vertical and Horizontal Alignment Materials

  • Masahiro Ito,
  • Eriko Fukuda,
  • Mitsuhiro Akimoto,
  • Hikaru Hoketsu,
  • Yukitaka Nakazono,
  • Haruki Tohriyama and
  • Kohki Takatoh

19 April 2023

To date, devices exhibiting incidence-angle-dependent transmittance have been fabricated by imparting an angle to a bulk liquid crystal (LC) by aligning the LC in the vicinity of one substrate horizontally (with respect to the substrate) while aligni...

  • Article
  • Open Access
8 Citations
4,100 Views
11 Pages

Strain-Induced Band Gap Variation in InGaN/GaN Short Period Superlattices

  • Polyxeni Chatzopoulou,
  • Isaak G. Vasileiadis,
  • Philomela Komninou,
  • Vassilis Pontikis,
  • Theodoros Karakostas and
  • George P. Dimitrakopulos

19 April 2023

The use of strained substrates may overcome indium incorporation limits without inducing plastic relaxation in InGaN quantum wells, and this is particularly important for short-period InGaN/GaN superlattices. By incorporating elastic strain into thes...

  • Article
  • Open Access
2 Citations
2,118 Views
11 Pages

19 April 2023

The challenging research topic for developing low-temperature ceramic fuel cells (LT-CFCs) is to design electrolytes with sufficient ionic conductivity either via doping or composite semiconductors with ionic conductors. Following this challenging to...

  • Article
  • Open Access
2,059 Views
10 Pages

N-Polar Indium Nitride Quantum Dashes and Quantum Wire-like Structures: MOCVD Growth and Characterization

  • Vineeta R. Muthuraj,
  • Wenjian Liu,
  • Henry Collins,
  • Weiyi Li,
  • Robert Hamwey,
  • Steven P. DenBaars,
  • Umesh K. Mishra and
  • Stacia Keller

19 April 2023

The electrical properties of InN give it potential for applications in III-nitride electronic devices, and the use of lower-dimensional epitaxial structures could mitigate issues with the high lattice mismatch of InN to GaN (10%). N-polar MOCVD growt...

  • Article
  • Open Access
3 Citations
2,440 Views
12 Pages

19 April 2023

The mild–severe wear transition of aluminum alloys is considered evidence that the wear changes from a stable state to an unstable state, which is of great importance in engineering applications. The purpose of this study is to evaluate the mil...

  • Article
  • Open Access
5 Citations
3,410 Views
10 Pages

ZnSe Nanoparticles for Thermoelectrics: Impact of Cu-Doping

  • Valeria Demontis,
  • Muhammad Isram,
  • Najaf Abbas Khan,
  • Nasir Amin,
  • Khalid Mahmood and
  • Francesco Rossella

19 April 2023

The present study investigates the impact of copper doping on the thermoelectric properties of zinc selenide (ZnSe) nanoparticles synthesized by the hydrothermal method. Nanoparticle samples with varying copper concentrations were prepared and their...

  • Article
  • Open Access
4 Citations
3,462 Views
19 Pages

18 April 2023

We report the time-efficient synthesis of quinolin-8-yl 4-chlorobenzoate (3) via an O-acylation reaction between 8-hydroxyquinoline (1) and 4-chlorobenzoyl chloride (2) mediated by triethylamine in acetonitrile under heating at 80 °C for 20 min i...

  • Article
  • Open Access
1 Citations
1,887 Views
11 Pages

Ellipsometry Characterisation for the Cd1-xZnxTe1-ySey Semiconductor Used in X-ray and Gamma Radiation Detectors

  • Lidia Martínez Herraiz,
  • Jose Luis Plaza Canga-argüelles and
  • Alejandro Francisco Braña de Cal

18 April 2023

The study of the optical properties of the Cd1-xZnxTe1-ySey (CZTS) crystal provides a clear idea about its response to incident X-ray or gamma radiation. This is important for selecting a proper composition of CZTS to achieve superior quality and hig...

  • Article
  • Open Access
3 Citations
2,875 Views
12 Pages

Intrafibrillar Growth of Hydroxyapatite Nanocrystals in Multiscale Collagen

  • Bingyu Xue,
  • Yidi Li,
  • Zhengyi Fu,
  • Hang Ping and
  • Kun Wang

18 April 2023

Collagen fibrils hierarchically assemble from microscale to macroscale, which endows the natural composite bone with good mechanical properties and remodeling functions. Revealing the intrafibrillar growth process of hydroxyapatite nanocrystals of co...

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Crystals - ISSN 2073-4352