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Crystals, Volume 11, Issue 9

September 2021 - 141 articles

Cover Story: Subjected to the spherical curvature and confinement without edges of shells—surrounded by water and also enclosing a droplet of water—the long-range-ordered self-organization in liquid crystals can give rise to many new phenomena. Here, we see the phase transition from nematic to smectic order in a shell where the outer boundary imposes tangential and the inner normal director orientation. The conflicting boundary conditions lead to a nematic phase with precisely two antipodal topological defects, which then seed a well-ordered arrangement of focal conic defects in the smectic phase. The reduced order at the defects produces local reductions in density, leading to unconventional shell orientation if the shell is near-density-matched to the water phases. View this paper
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Articles (141)

  • Editorial
  • Open Access
4 Citations
2,498 Views
2 Pages

Highly Conductive Ceramics with Multiple Types of Mobile Charge Carriers

  • Sebastian Wachowski,
  • Gilles Gauthier,
  • Jong-Sook Lee and
  • Sandrine Ricote

21 September 2021

Functional ceramic materials are of interest in many applications due to their structural and chemical richness and the huge range of physical properties that can be generated and modified by the control of the former (electrical conductivity, thermo...

  • Article
  • Open Access
5 Citations
3,772 Views
10 Pages

Growth and Characterization of Ce-Doped Luag Single Crystal Fibers from Transparent Ceramics by Laser-Heated Pedestal Method

  • Yun Dai,
  • Zhonghan Zhang,
  • Xibin Wang,
  • Zhuowei Lu,
  • Huamin Kou,
  • Liangbi Su and
  • Anhua Wu

21 September 2021

Scintillation single crystal fibers (SCFs) have great potential applications in the new generation of high-energy ray and particle detectors due to their morphological advantages. In this work; Ce:LuAG SCFs with a diameter of 1 mm were grown along th...

  • Article
  • Open Access
5 Citations
3,380 Views
11 Pages

21 September 2021

All electronic devices, in this case, SiC MOS transistors, are exposed to aging mechanisms and variability issues, that can affect the performance and stable operation of circuits. To describe the behavior of the devices for circuit simulations, phys...

  • Article
  • Open Access
6 Citations
2,724 Views
14 Pages

Ab Initio Simulation of the IR Spectrum of Hydrated Kaolinite

  • Victor Yavna,
  • Tatiana Nazdracheva,
  • Andrey Morozov,
  • Yakov Ermolov and
  • Andrei Kochur

20 September 2021

The hydration of the basal surfaces of kaolinite is studied by theoretical methods. The cluster method was used to simulate the positions of atoms. The positions of the atoms of the basal surfaces of dry and hydrated minerals are optimized by minimiz...

  • Article
  • Open Access
2 Citations
2,566 Views
13 Pages

Crystalline S-Layer Protein Monolayers Induce Water Turbulences on the Nanometer Scale

  • Rupert Tscheliessnig,
  • Andreas Breitwieser,
  • Uwe B. Sleytr and
  • Dietmar Pum

20 September 2021

Bacterial surface layers (S-layers) have been observed as the outermost cell envelope component in a wide range of bacteria and most archaea. They are one of the most common prokaryotic cell surface structures and cover the cells completely. It is as...

  • Article
  • Open Access
11 Citations
2,483 Views
15 Pages

The Architectonics Features of Heterostructures for IR Range Detectors Based on Polycrystalline Layers of Lead Chalcogenides

  • Yuliya Mikhailovna Spivak,
  • Irina Evgen’evna Kononova,
  • Pavel Vasil’evich Kononov,
  • Vyacheslav Alexeyevich Moshnikov and
  • Sergey Anatol’evich Ignat’ev

19 September 2021

A model is developed for the formation of porous intragranular architectonics of nanostructured polycrystalline layers of lead chalcogenides for photodetectors and IR emitters. The layers are obtained under the conditions of thermal evaporation in a...

  • Article
  • Open Access
16 Citations
3,457 Views
14 Pages

Novel NiMgOH-rGO-Based Nanostructured Hybrids for Electrochemical Energy Storage Supercapacitor Applications: Effect of Reducing Agents

  • Konda Shireesha,
  • Thida Rakesh Kumar,
  • Tumarada Rajani,
  • Chidurala Shilpa Chakra,
  • Murikinati Mamatha Kumari,
  • Velpula Divya and
  • Kakarla Raghava Reddy

19 September 2021

This paper describes the synthesis and characterization of NiMgOH-rGO nanocomposites made using a chemical co-precipitation technique with various reducing agents (e.g., NaOH and NH4OH) and reduced graphene oxide at 0.5, 1, and 1.5 percent by weight....

  • Article
  • Open Access
1 Citations
3,988 Views
7 Pages

Study on the Microstructure and Spectra of Regrown Quartz Crystals from Chinese Jewelry Market

  • Danyi Zhou,
  • Taijin Lu,
  • Huiru Dai,
  • Jieran Lv,
  • Shouming Chen,
  • Zhonghua Song and
  • Jian Zhang

19 September 2021

Regrown quartz crystals consist of the natural section and the synthetic section grown by hydrothermal technique, which has become popular on the Chinese jewelry market in recent years. Similar gemological properties to those of natural quartz have b...

  • Article
  • Open Access
6 Citations
4,000 Views
13 Pages

Preparation of Zinc Oxide and Zinc Ferrite from Zinc Hypoxide by Wet Process and Electrochemistry

  • Hui Li,
  • Yutian Fu,
  • Jinglong Liang,
  • Le Wang,
  • Hongyan Yan and
  • Linfei Zhao

18 September 2021

With the increase of zinc resource consumption, the recovery and utilization of zinc resources in zinc suboxide has become one of the current research hotspots. In this study, the electrochemical method was used to remove the impurities in the zinc l...

  • Article
  • Open Access
3 Citations
3,952 Views
8 Pages

Effect of Graphene on Ice Polymorph

  • Chuanbao Zheng,
  • Hao Lu,
  • Quanming Xu,
  • Tianyi Liu,
  • Aniruddha Patil,
  • Jianyang Wu,
  • Renko de Vries,
  • Han Zuilhof and
  • Zhisen Zhang

18 September 2021

Recently, ice with stacking disorder structure, consisting of random sequences of cubic ice (Ic) and hexagonal ice (Ih) layers, was reported to be more stable than pure Ih/Ic. Due to a much lower free energy barrier of heterogeneous nucleation, in pr...

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Crystals - ISSN 2073-4352