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Materials, Volume 14, Issue 1

January-1 2021 - 235 articles

Cover Story: Disorder in covalent organic frameworks (COFs) is often not acknowledged but does influence the properties of these materials. The disorder can come from vacancies or side reactions leading to defects such as a linear versus triangular link, as illustrated in the 2D-COF containing carboxylated pores. We show how this disorder can influence properties and applications in a membrane, and using a Monto Carlo simulation we illustrate how these defects propagate as a COF nucleates and grows both within layers and by screw dislocation with other layers. View this paper
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Articles (235)

  • Communication
  • Open Access
8 Citations
2,902 Views
7 Pages

Intrinsic Dielectric Loss in Zr0.8Sn0.2TiO4 Ceramics Investigated by Terahertz Time Domain Spectroscopy

  • Liviu Nedelcu,
  • Cezar Dragos Geambasu,
  • Monica Enculescu and
  • Marian Gabriel Banciu

5 January 2021

Terahertz time-domain spectroscopy (THz-TDS) was employed for estimation of intrinsic dielectric loss of Zr0.8Sn0.2TiO4 (ZST) ceramics. Single-phase ZST dielectric resonators (DRs) with various synthesis parameters and, consequently, different extrin...

  • Article
  • Open Access
3 Citations
2,921 Views
10 Pages

Investigation on the Microstructure of ECAP-Processed Iron-Aluminium Alloys

  • Bernd-Arno Behrens,
  • Kai Brunotte,
  • Tom Petersen and
  • Roman Relge

5 January 2021

The present work deals with adjusting a fine-grained microstructure in iron-rich iron-aluminium alloys using the ECAP-process (Equal Channel Angular Pressing). Due to the limited formability of Fe-Al alloys with increased aluminium content, high form...

  • Article
  • Open Access
8 Citations
3,292 Views
18 Pages

Preparation and Physico-Chemical Performance Optimization of Sintering-Free Lightweight Aggregates with High Proportions of Red Mud

  • Guan Wang,
  • Chao Zhang,
  • Wenlong Wang,
  • Shuang Wu,
  • Jingwei Li,
  • Xujiang Wang and
  • Changliang Wu

5 January 2021

Sintering-free lightweight aggregates were prepared with high proportions of red mud and a binder material derived from whole solid wastes through rolling granulation at room temperature. The preparation process was optimized by changing the material...

  • Article
  • Open Access
10 Citations
3,351 Views
17 Pages

5 January 2021

The focus of this paper is on examining the mechanical behavior of spark plasma sintered WC-Co based composites doped with Cr3C2, TaC-NbC, TiC, and VC, as well as defining some parameters characterizing deformation and fracture processes during hardn...

  • Article
  • Open Access
12 Citations
4,696 Views
21 Pages

Manufacturing and Recycling Impact on Environmental Life Cycle Assessment of Innovative Wind Power Plant Part 1/2

  • Krzysztof Doerffer,
  • Patrycja Bałdowska-Witos,
  • Michał Pysz,
  • Piotr Doerffer and
  • Andrzej Tomporowski

5 January 2021

Wind power plants are considered as an ecologically-clean source of energy. However, manufacturing processes cannot be treated that way. Manufacturing processes consume huge amounts of electrical and thermal energy and significant amount of materials...

  • Article
  • Open Access
7 Citations
3,486 Views
15 Pages

Histological and Histomorphometric Analyses of Bone Regeneration in Osteoporotic Rats Using a Xenograft Material

  • Marwa Y. Shaheen,
  • Amani M. Basudan,
  • Abdurahman A. Niazy,
  • Jeroen J. J. P. van den Beucken,
  • John A. Jansen and
  • Hamdan S. Alghamdi

5 January 2021

We evaluated the effect of osteoporotic induction after eight weeks of initial healing of bone defects grafted with a xenograft material in a rat model. Bone defects were created in the femoral condyles of 16 female Wistar rats (one defect per rat)....

  • Article
  • Open Access
57 Citations
5,021 Views
8 Pages

Effect of Denture Base Fabrication Technique on Candida albicans Adhesion In Vitro

  • Avi Meirowitz,
  • Arkadi Rahmanov,
  • Eti Shlomo,
  • Helena Zelikman,
  • Eran Dolev and
  • Nir Sterer

5 January 2021

Denture stomatitis is a common manifestation of oral candidiasis affecting some 65% of denture wearers. This condition is initiated by the adherence of Candida albicans to denture base acrylic resin. The present study aimed to test the in vitro effec...

  • Feature Paper
  • Article
  • Open Access
36 Citations
4,303 Views
20 Pages

Topological, Mechanical and Biological Properties of Ti6Al4V Scaffolds for Bone Tissue Regeneration Fabricated with Reused Powders via Electron Beam Melting

  • Maria Laura Gatto,
  • Riccardo Groppo,
  • Nora Bloise,
  • Lorenzo Fassina,
  • Livia Visai,
  • Manuela Galati,
  • Luca Iuliano and
  • Paolo Mengucci

5 January 2021

Cellularized scaffold is emerging as the preferred solution for tissue regeneration and restoration of damaged functionalities. However, the high cost of preclinical studies creates a gap between investigation and the device market for the biomedical...

  • Article
  • Open Access
13 Citations
5,674 Views
14 Pages

Lyophilized Polyvinylpyrrolidone Hydrogel for Culture of Human Oral Mucosa Stem Cells

  • Carolina Oliver-Urrutia,
  • Raúl Rosales Ibañez,
  • Miriam V. Flores-Merino,
  • Lucy Vojtova,
  • Jakub Salplachta,
  • Ladislav Čelko,
  • Jozef Kaiser and
  • Edgar B. Montufar

5 January 2021

This work shows the synthesis of a polyvinylpyrrolidone (PVP) hydrogel by heat-activated polymerization and explores the production of hydrogels with an open porous network by lyophilisation to allow the three-dimensional culture of human oral mucosa...

  • Article
  • Open Access
18 Citations
3,451 Views
10 Pages

Bio-Absorption of Human Dentin-Derived Biomaterial in Sheep Critical-Size Iliac Defects

  • Md Arafat Kabir,
  • Masaru Murata,
  • Mamata Shakya,
  • Katsuhisa Yamada and
  • Toshiyuki Akazawa

5 January 2021

The aim of this study was to evaluate the bio-absorption and bone regeneration of human tooth-derived dentin scaffold, entitled as perforated root-demineralized dentin matrix (PR-DDM), after in vivo implantation into the critical-size iliac defects....

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Materials - ISSN 1996-1944