scholarly journals Multicomponent complex oxide media – the basics of the functional materials for electronic engineering: the selection of the promising compositions for assessing the ferrohardness

2021 ◽  
Vol 1942 (1) ◽  
pp. 012016
Author(s):  
K P Andryushin ◽  
S I Dudkina ◽  
L A Shilkina ◽  
I N Andryushina ◽  
D I Rudskiy ◽  
...  
2020 ◽  
Vol 11 (30) ◽  
pp. 7813-7822 ◽  
Author(s):  
Byungju Lee ◽  
Jaekyun Yoo ◽  
Kisuk Kang

Stability and compatibility between chemical components are essential parameters that need to be considered in the selection of functional materials in configuring a system.


Author(s):  
K.P. Andryuishin ◽  
◽  
I.N. Andryushina ◽  
I.A. Verbenko ◽  
S.I. Dudkina ◽  
...  

2016 ◽  
Vol 100 ◽  
pp. 64-72
Author(s):  
Irene Bonadies ◽  
Francesca Cimino ◽  
Veronica Ambrogi ◽  
Cosimo Carfagna

Electrospinning is a versatile technology for the production of polymer micro/nanoscale fibers. It provides the direct addition of bioactive payloads into micro/nanofibers thus improving the encapsulation efficiency and reducing the burst release via proper selection of drug-polymer-solvent system or electrospinning setup. In addition, since electrospun fibers have one dimension at the microscopic scale but another dimension at the macroscopic one, it is possible to combine the advantages possessed by functional materials on the nanometer scale. A large surface to volume ratio, with the properties of conventional solid membranes, such as ease of manipulation and applicability in any size and shape, making them suitable for biomedical or healthcare applications both topically (i.e. skin) and locally (i.e. tumor). This communication deals with electrospun fibrous systems containing active compounds extracts from plants such as Artemisinin and Propolis; these systems have been properly realized to preserve the pharmacological activity of drugs and evaluated as potential delivery systems for vector-born deseases and cancer, reducing the damage to non-target organism and environment.


Author(s):  
B. P. J. de Lacy Costello ◽  
J. Armstrong ◽  
I. Jahan ◽  
N. M. Ratcliffe

Under normal reaction conditions [AlCl3 0.28-0.34M and NaOH 2.5M A.Volford et al.] spontaneous spiral and circular travelling precipitate waves were observed. We constructed a phase diagram for the reaction and identified a large controllable region at lower aluminium chloride levels. We show that it is possible to selectively initiate travelling circular waves and other self-organised structures within this controllable region. In previous work initiation was undertaken before adding the outer electrolyte resulting in disorganised waves. However, marking the gel one minute after adding outer electrolyte resulted in cardioid waves. Increasing the time interval to two minutes caused a transition to single circular waves. If the gel is marked sequentially nested circular waves (target waves) are formed. These reactions were used to calculate simple and additively weighted Voronoi tessellations. The fine control of self-organisation in precipitation reactions is of interest for the synthesis of novel and functional materials.


2015 ◽  
Vol 71 (12) ◽  
pp. 1069-1073 ◽  
Author(s):  
Yang Liu ◽  
Yong-Lan Feng ◽  
Wei-Wei Fu

The design and preparation of crystalline polymeric materials has attracted increasing attention due to their diverse applications as functional materials in gas storage, separation, catalysis, sensing and photoluminescence. The judicious selection of organic linkers is critical for varying the coordination behaviour of the metal ions and determining the overall characteristics of the networks. A new adenine-based ZnIIcoordination polymer, [Zn(C6H2O4S)(C5H5N5)]nor [Zn(tdc)(9H-ade)] (H2tdc is thiophene-2,5-dicarboxylic acid and ade is adenine), has been prepared hydrothermally and the crystal structure exhibits in its packing two-dimensional (4,4) grid sheets parallel to theabplane, featuring two distinct square cavities delimited by the two types of ligands and the ZnIIions with the dimensions 6.6 × 6.6 and 10.2 × 10.2 Å (based on the Zn...Zn distance). The title complex shows enhanced photoluminescence at 378 nm compared to the free ligands, suggesting that the coordination of H2tdc or adenine to the metal centre effectively increases the rigidity of the ligands and reduces the energy loss by radiative decay of intraligand excited states.


Coatings ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 847
Author(s):  
Mihail Lungu ◽  
Cosmin Dobrea ◽  
Ion Tiseanu

The development of erosion-resistant functional materials usable as plasma facing first wall components (PFC) is crucial for increasing the lifetime of future fusion reactors. Generally, PFCs have to be quality checked and characterized regarding their composition, before integrating them into the fusion reactor vessel. Enhanced X-ray fluorescence (XRF) methods represent an effective alternative to conventional analysis methods for the characterization of refractive metallic coatings on large areas of fusion materials. We have developed and applied XRF methods as fast and robust methods for the characterization of the thickness and composition uniformity of complex functional coatings. These coatings consist of tungsten included in multilayer configuration and deposited on low or high Z substrates. We have further developed customized calibration protocols for quantifying the element composition and layer thickness of each investigated sample. The calibration protocols are based on a combination of standard samples measurements, Monte Carlo simulations, and fundamental parameter theoretical calculations. The calibrated results are discussed considering a selection of relevant PFC samples. The deposition uniformity was successfully investigated for different PFC-relevant tiles and lamella shaped samples with W layers below and over the W L-line saturation thickness. Also, the 2D thickness mapping capability of the XRF method was demonstrated by studying the plasma post-erosion pattern.


2021 ◽  
Author(s):  
MD Rajbanul Akhond ◽  
Ahmed Sharif

Bio-composites have diverse functional demands for many structural, electrical, electronic, and medical applications. An expansion of the composite functionality is achieved by manipulating the material and design scheme. Smart selection of matrix-reinforcement combinations will lead to applications that have never even been considered. Research holds a huge potential to create a wide variety of usable materials by mixing different fillers and modifying the parameters. Apart from selecting the polymer and the filler, the engineer will have to understand the compatibility of the polymer and the filler, dispersion, and bonding behavior making the design of polymer nanocomposite a rather complex system. In this chapter, we have tried to display different functional materials development pursuit.


2020 ◽  
Vol 6 (36) ◽  
pp. eabc2709
Author(s):  
Frank Neubrech ◽  
Xiaoyang Duan ◽  
Na Liu

Displays are an indispensable medium to visually convey information in our daily life. Although conventional dye-based color displays have been rigorously advanced by world leading companies, critical issues still remain. For instance, color fading and wavelength-limited resolution restrict further developments. Plasmonic colors emerging from resonant interactions between light and metallic nanostructures can overcome these restrictions. With dynamic characteristics enabled by functional materials, dynamic plasmonic coloration may find a variety of applications in display technologies. In this review, we elucidate basic concepts for dynamic plasmonic color generation and highlight recent advances. In particular, we devote our review to a selection of dynamic controls endowed by functional materials, including magnesium, liquid crystals, electrochromic polymers, and phase change materials. We also discuss their performance in view of potential applications in current display technologies.


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