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Crystals, Volume 7, Issue 11

November 2017 - 29 articles

Cover Story: Helicobacter pylori infection can lead to the development of gastric and duodenal ulcers and gastric cancer. The H. pylori genome encodes several periplasmic binding proteins (PBPs), most with unknown function. We describe crystallisation and preliminary X-ray diffraction analysis of the PBP YckK from H. pylori SS1, an important step towards elucidation of its ligand specificity and three-dimensional structure. The cover shows the electron density map of the molecular replacement solution. View the paper here.
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Articles (29)

  • Article
  • Open Access
21 Citations
5,822 Views
9 Pages

Room-Temperature Plastic Deformation of Strontium Titanate Crystals Grown from Different Chemical Compositions

  • Atsutomo Nakamura,
  • Kensuke Yasufuku,
  • Yuho Furushima,
  • Kazuaki Toyoura,
  • K. Peter D. Lagerlöf and
  • Katsuyuki Matsunaga

22 November 2017

Oxide materials have the potential to exhibit superior mechanical properties in terms of high yield point, high melting point, and high chemical stability. Despite this, they are not widely used as a structural material due to their brittle nature. H...

  • Article
  • Open Access
2 Citations
5,687 Views
17 Pages

19 November 2017

Phoxonic crystals, which exhibit simultaneous phononic and photonic bandgaps, are promising artificial materials for optomechanical and acousto-optical devices. In this paper, simultaneous guidance of surface acoustic and surface optical waves in tru...

  • Review
  • Open Access
69 Citations
11,235 Views
15 Pages

17 November 2017

The formation of minerals such as calcite and struvite through the hydrolysis of urea catalyzed by ureolytic bacteria is a simple and easy way to control mechanisms, which has been extensively explored with promising applications in various areas suc...

  • Article
  • Open Access
45 Citations
7,546 Views
13 Pages

15 November 2017

While phononic crystals can be theoretically modeled with a variety of analytical and numerical methods, the practical realization and comprehensive characterization of complex designs is often challenging. This is especially important for the nearly...

  • Article
  • Open Access
18 Citations
5,960 Views
11 Pages

15 November 2017

Graphene’s novel electrical, optical, and mechanical properties are affected both by substrate interaction and processing steps required to fabricate contacts and devices. Annealing is used to clean graphene devices, but this can lead to doping and d...

  • Article
  • Open Access
6 Citations
6,297 Views
13 Pages

Quantitative Imaging of the Stress/Strain Fields and Generation of Macroscopic Cracks from Indents in Silicon

  • Brian K. Tanner,
  • David Allen,
  • Jochen Wittge,
  • Andreas N. Danilewsky,
  • Jorge Garagorri,
  • Eider Gorostegui-Colinas,
  • M. Reyes Elizalde and
  • Patrick J. McNally

14 November 2017

The crack geometry and associated strain field around Berkovich and Vickers indents on silicon have been studied by X-ray diffraction imaging and micro-Raman spectroscopy scanning. The techniques are complementary; the Raman data come from within a f...

  • Article
  • Open Access
3 Citations
6,726 Views
11 Pages

Galloping Reduction of Transmission Lines by Using Phononic Crystal

  • Lin Han,
  • Yan Zhang,
  • Xiaomei Li,
  • Linhua Jiang and
  • Da Chen

13 November 2017

Considering the combination of the transmission lines and phononic crystals (PCs), we propose a new method to solve the problem of the galloping of overhead transmission lines. The method has two key points: attaching the suitable mass-spring system...

  • Article
  • Open Access
2 Citations
6,643 Views
9 Pages

Expression, Purification, Crystallization, and X-ray Structural Analysis of CRISPR-Associated Protein Cas6 from Methanocaldococcus jannaschii

  • Ming-Chang Lee,
  • Shih-Ting Tseng,
  • Juan-Cheng Yang,
  • Tung-Ju Hsieh,
  • Shang-Chuen Wu,
  • Shu-Min Kuan,
  • Ming-Jen Chen,
  • Ming-Chiu Chang,
  • Chun-Chiu Wang and
  • Hsiu-Lin Chen
  • + 4 authors

10 November 2017

The CRISPR-associated protein 6, Cas6 protein, is an endoribonuclease that cleaves precursor CRISPR RNAs within the repeat sequence to release specific invader-targeting RNAs. Cas6 protein can recognize different sequences by their specific scaffold....

  • Article
  • Open Access
7 Citations
5,608 Views
21 Pages

Dopant Concentration Induced Optical Changes in Ca,Eu-α-Sialon

  • Daniel Michalik,
  • Tomasz Pawlik,
  • Benedykt Kukliński,
  • Agata Lazarowska,
  • Tadeusz Leśniewski,
  • Justyna Barzowska,
  • Sebastian Mahlik,
  • Marek Grinberg,
  • Barbara Adamczyk and
  • Mateusz Pławecki
  • + 1 author

8 November 2017

The phosphor powders of Ca(m/2)−xEuxSi12−(m+n)Alm+nOnN16−n (m = 1.6, n = 0.8, x in the range of 0–0.08) were synthesized by means of a solid state reaction in flowing nitrogen in a carbon resistant furnace and the influence of Eu concentration on the...

  • Article
  • Open Access
18 Citations
6,642 Views
16 Pages

Novel Quaternary TlGaSn2Se6 Single Crystal as Promising Material for Laser Operated Infrared Nonlinear Optical Modulators

  • Oleh V. Parasyuk,
  • Volodymyr S. Babizhetskyy,
  • Oleg Y. Khyzhun,
  • Volodymyr O. Levytskyy,
  • Iwan V. Kityk,
  • Galyna L. Myronchuk,
  • Oksana V. Tsisar,
  • Lyudmyla V. Piskach,
  • Jaroslaw Jedryka and
  • Artur Maciag
  • + 1 author

7 November 2017

The studies of the laser operated third order nonlinear optical features of novel TlGaSn2Se6 crystal were done. The main efforts were devoted to a search of a possibility to apply these crystals as laser operated optoelectronic material. For this rea...

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Crystals - ISSN 2073-4352