scholarly journals Interfacial stability and ionic conductivity enhanced by dopant segregation in eutectic ceramics: the role of Gd segregation in doped CeO2/CoO and CeO2/NiO interfaces

2020 ◽  
Vol 8 (5) ◽  
pp. 2591-2601
Author(s):  
Alodia Orera ◽  
Funing Wang ◽  
Elías Ferreiro-Vila ◽  
Sonia Serrano-Zabaleta ◽  
Aitor Larrañaga ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Interfacial Stability ◽  
Charge Balance ◽  
Ionic Charge ◽  
Dopant Segregation ◽  
Doped Ceo2

Ionic charge balance at the interface of Gd-doped CeO2/CoO eutectic ceramics produces Gd segregation and increases the interfacial ionic conductivity.

Directive Effect of Chain Length in Modulating Peptide Nano-assemblies

2020 ◽  
Vol 27 (9) ◽  
pp. 923-929
Author(s):  
Gaurav Pandey ◽  
Prem Prakash Das ◽  
Vibin Ramakrishnan
Keyword(s):  
Electron Microscopy ◽  
Amino Acids ◽  
Light Scattering ◽  
Chain Length ◽  
Self Assembly ◽  
The Self ◽  
Ionic Charge ◽  
Self Assembling ◽  
Biophysical Techniques

Background: RADA-4 (Ac-RADARADARADARADA-NH2) is the most extensively studied and marketed self-assembling peptide, forming hydrogel, used to create defined threedimensional microenvironments for cell culture applications. Objectives: In this work, we use various biophysical techniques to investigate the length dependency of RADA aggregation and assembly. Methods: We synthesized a series of RADA-N peptides, N ranging from 1 to 4, resulting in four peptides having 4, 8, 12, and 16 amino acids in their sequence. Through a combination of various biophysical methods including thioflavin T fluorescence assay, static right angle light scattering assay, Dynamic Light Scattering (DLS), electron microscopy, CD, and IR spectroscopy, we have examined the role of chain-length on the self-assembly of RADA peptide. Results: Our observations show that the aggregation of ionic, charge-complementary RADA motifcontaining peptides is length-dependent, with N less than 3 are not forming spontaneous selfassemblies. Conclusion: The six biophysical experiments discussed in this paper validate the significance of chain-length on the epitaxial growth of RADA peptide self-assembly.

scholarly journals Ionic conductivity in oxide heterostructures: the role of interfaces

2010 ◽  
Vol 11 (5) ◽  
pp. 054503 ◽  
Author(s):  
Emiliana Fabbri ◽  
Daniele Pergolesi ◽  
Enrico Traversa
Keyword(s):  
Ionic Conductivity ◽  
Oxide Heterostructures

Ionic transport of alkali in borosilicate glass. Role of alkali nature on glass structure and on ionic conductivity at the glassy state

2015 ◽  
Vol 410 ◽  
pp. 74-81 ◽  
Author(s):  
Muriel Neyret ◽  
Marion Lenoir ◽  
Agnès Grandjean ◽  
Nicolas Massoni ◽  
Bruno Penelon ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Borosilicate Glass ◽  
Glassy State ◽  
Glass Structure ◽  
Ionic Transport

The role of Si impurities in the transient dopant segregation and precipitation in yttrium-doped alumina

2010 ◽  
Vol 101 (1) ◽  
pp. 95-101
Author(s):  
Sašo Šturm ◽  
Mehmet A. Gülgün ◽  
Gunther Richter ◽  
Francisco M. Morales ◽  
Rowland M. Cannon ◽  
...  
Keyword(s):  
Dopant Segregation

Role of Al doping in structural, microstructural, electrical and optical characteristics of as-deposited and annealed ZnO thin films

RSC Advances ◽  
2015 ◽  
Vol 5 (31) ◽  
pp. 24178-24187 ◽  
Author(s):  
Shashikant D. Shinde ◽  
S. K. Date ◽  
Alka V. Deshmukh ◽  
Amit Das ◽  
Pankaj Misra ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Characteristics ◽  
Zno Thin Films ◽  
Al Doping ◽  
Dopant Segregation ◽  
Electrical Characterizations

Aluminium dopant segregation from AD-xAZO thin films on annealing is established by structural, optical and electrical characterizations.

Atomistic insights into the screening and role of oxygen in enhancing the Li+ conductivity of Li7P3S11−xOx solid-state electrolytes

2019 ◽  
Vol 21 (48) ◽  
pp. 26358-26367
Author(s):  
Hanghui Liu ◽  
Zhenhua Yang ◽  
Qun Wang ◽  
Xianyou Wang ◽  
Xingqiang Shi
Keyword(s):  
Solid State ◽  
Ionic Conductivity ◽  
Electrochemical Stability ◽  
Oxygen Doping ◽  
Solid State Electrolyte ◽  
Solid State Electrolytes

A solid-state electrolyte (L7P3S10.25O0.75) with good ionic conductivity and electrochemical stability is successfully designed by oxygen doping.

Low-Temperature Prepared Multi-Elements Doped CeO2 Electrolyte

2009 ◽  
Author(s):  
Horng-Yi Chang ◽  
Yao-Ming Wang
Keyword(s):  
Ionic Conductivity ◽  
Low Temperature ◽  
Mixed Oxide ◽  
Sintering Temperature ◽  
Solid Oxide ◽  
Evaporation Method ◽  
Pure Phase ◽  
Doped Ceo2 ◽  
Oxide Ionic Conductivity ◽  
Homogeneous Composition

CeO2 materials doped with the di- or tri-valent metals possess high oxide ionic conductivity at low temperature for potential electrolyte use in intermediate temperature solid oxide fuel cell (SOFC). However, multi-elements doped CeO2-based electrolyte, (La1-x-ySrxBay)0.175Ce0.825O2-δ (LSBC) in this work, with pure phase is difficultly synthesized at low calcination temperature. High sintering temperature, e.g. > 1500°C, is also needed in conventional mixed oxide method. In this work, nanoparticles less than 50nm of LSBC can be prepared by solution-evaporation method at constant temperature. Pure fluorite crystal structure can be obtained lower than 700°C. The optimal mole ratio of LSBC/citric acid in prepared solution is 1/2 to achieve homogeneous composition and pure phase of LSBC. Small grain size of about 1μm average is observed for 1300°C-microwave sintered LSBC by solution-evaporation method. The ionic conductivity of 1400°C-conventional sintered and 1300°C-microwave sintered LSBC prepared by solution-evaporation method is about 0.006 S/cm at 600°C but less than 0.004 S/cm at 600°C even for 1500°C-conventional sintered LSBC prepared by mixed oxide method.

Hydrodeoxygenation of Octanoic Acid over the Mo-Doped CeO2 -Supported Bimetal Catalysts: The Role of Mo

2018 ◽  
Vol 3 (17) ◽  
pp. 4786-4796 ◽  
Author(s):  
Pengxin Shen ◽  
Ruiping Wei ◽  
M. Yanli Zhu ◽  
Donghui Pan ◽  
Siquan Xu ◽  
...  
Keyword(s):  
Octanoic Acid ◽  
Doped Ceo2
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