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Materials, Volume 12, Issue 5

2019 March-1 - 156 articles

Cover Story: A successful optimization of the thermoelectric properties of the Zintl phase, Yb14ZnSb11, is described as an almost electron precise Zintl phase with 13.24Yb2+ + 0.75Yb3+ + ZnSb49- + Sb37- + 4Sb3-. Replacement of Yb3+ with either Y3+, approximately the same size as Yb3+, or La3+, larger than Yb3+, is investigated. These two rare earths can be substitution in Yb14-xRExZnSb11 (RE = Y, La, x~0.5) and drastically improves the thermoelectric efficiency while also improving structural characteristics such as melting temperatures. The effective mass increases with temperature providing a significant increase in the Seebeck coefficient. Ideas for further increasing the efficiencies of the thermoelectric properties are provided. View this paper.
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Articles (156)

  • Article
  • Open Access
5 Citations
3,663 Views
14 Pages

Instrumented Indentation of Super-Insulating Silica Compacts

  • Belynda Benane,
  • Sylvain Meille,
  • Geneviève Foray,
  • Bernard Yrieix and
  • Christian Olagnon

12 March 2019

Highly porous silica compacts for superinsulation were characterized by instrumented indentation. Samples showed a multi-scale stacking of silica particles with a total porous fraction of 90 vol %. The two main sources of silica available for the sup...

  • Article
  • Open Access
14 Citations
4,690 Views
14 Pages

12 March 2019

Experimental and numerical studies have shown that mechanical loading associated with lithiation/delithiation may limit the useful life of battery electrode materials. The paper presents an approach to parameterize and compare electrode material perf...

  • Article
  • Open Access
12 Citations
4,737 Views
10 Pages

Charge and Peptide Concentration as Determinants of the Hydrogel Internal Aqueous Environment

  • Scott V. Elgersma,
  • Michelle Ha,
  • Jung-Lynn Jonathan Yang,
  • Vladimir K. Michaelis and
  • Larry D. Unsworth

12 March 2019

Self-assembling peptides are a promising class of biomaterials with desirable biocompatibility and versatility. In particular, the oligopeptide (RADA)4, consisting of arginine (R), alanine (A), and aspartic acid (D), self-assembles into nanofibers th...

  • Article
  • Open Access
6 Citations
4,508 Views
14 Pages

Prefabricated and Self-Setting Cement Laminates

  • Theresa Brückner,
  • Andreas Fuchs,
  • Laura Wistlich,
  • Andreas Hoess,
  • Berthold Nies and
  • Uwe Gbureck

12 March 2019

Polycaprolactone (PCL) fiber mats with defined pore architecture were shown to provide sufficient support for a premixed calcium phosphate cement (CPC) paste to serve as a flat and flexible composite material for the potential application in 2-dimens...

  • Article
  • Open Access
10 Citations
5,212 Views
19 Pages

Progressive Failure Simulation of Notched Tensile Specimen for Triaxially-Braided Composites

  • Zhenqiang Zhao,
  • Haoyuan Dang,
  • Jun Xing,
  • Xi Li,
  • Chao Zhang,
  • Wieslaw K. Binienda and
  • Yulong Li

12 March 2019

The mechanical characterization of textile composites is a challenging task, due to their nonuniform deformation and complicated failure phenomena. This article introduces a three-dimensional mesoscale finite element model to investigate the progress...

  • Article
  • Open Access
13 Citations
3,904 Views
21 Pages

12 March 2019

Background: it is undesirable for defects to occur in building partitions and units. There is a need to develop and improve research techniques for locating such defects, especially non-destructive techniques for active thermography. The aim of the e...

  • Review
  • Open Access
44 Citations
8,998 Views
22 Pages

Sum-Frequency Generation Spectroscopy of Plasmonic Nanomaterials: A Review

  • Christophe Humbert,
  • Thomas Noblet,
  • Laetitia Dalstein,
  • Bertrand Busson and
  • Grégory Barbillon

12 March 2019

We report on the recent scientific research contribution of non-linear optics based on Sum-Frequency Generation (SFG) spectroscopy as a surface probe of the plasmonic properties of materials. In this review, we present a general introduction to the f...

  • Article
  • Open Access
16 Citations
3,997 Views
19 Pages

Experimental Study on Shear Capacity of Reinforced Concrete Beams with Corroded Longitudinal Reinforcement

  • Sun-Jin Han,
  • Hyo-Eun Joo,
  • Seung-Ho Choi,
  • Inwook Heo,
  • Kang Su Kim and
  • Soo-Yeon Seo

12 March 2019

In this study, shear tests were conducted to investigate the effects of longitudinal reinforcement corrosion on the shear capacity of reinforced concrete (RC) members with transverse reinforcement. To this end, a total of eight test specimens were fa...

  • Article
  • Open Access
5 Citations
5,295 Views
16 Pages

Nanocrystalline Transition-Metal Gallium Oxide Spinels from Acetylacetonate Precursors via Solvothermal Synthesis

  • Daniel S. Cook,
  • Reza J. Kashtiban,
  • Klaus Krambrock,
  • Geraldo M. de Lima,
  • Humberto O. Stumpf,
  • Luciano R. S. Lara,
  • José D. Ardisson and
  • Richard I. Walton

12 March 2019

The synthesis of mixed-metal spinels based on substituted γ-Ga2O3 is reported using metal acetylacetonate precursors in solvothermal reactions with alcohols as solvents at 240 °C. New oxides of Cr, Mn and Fe have been produced, all of which...

  • Article
  • Open Access
6 Citations
5,047 Views
10 Pages

Coplanar Donor-π-Acceptor Dyes Featuring a Furylethynyl Spacer for Dye-Sensitized Solar Cells

  • Luis A. Serrano,
  • Kwang-Won Park,
  • Sungwoo Ahn,
  • Alan A. Wiles,
  • Jongin Hong and
  • Graeme Cooke

12 March 2019

Coplanar metal-free organic dyes featuring a furylethynyl spacer with different donor residues (MeO-, MeS-, and Me2N-) have been synthesized. Density functional theory (DFT) calculations predicted that the Me2N- residue would facilitate more effectiv...

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Materials - ISSN 1996-1944