Materials Literature
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The article contains sections titled: 1. Introduction 2. Physical Properties 3. Mechanical Properties 4. Chemical Properties 5. Resources, Raw Material 6. Production 6.1. Beryl Processing 6.1.1. Beryl Processing: Sulfate Process 6.1.2. Beryl Processing: Fluoride Process 6.1.3. Beryl Processing: Chloride Process 6.2. P…
In this work we study theoretically the coupling of single-molecule magnets (SMMs) to a variety of quantum circuits, including microwave resonators with and without constrictions and flux qubits. The main result of this study is that it is possible to achieve strong and ultrastrong coupling regimes between SMM crystal…
The goal of this study is to investigate photocatalytic semiconductor systems which are layered thin film composites built from perovskite oxide materials with characteristics such as small and large band gaps and/or ferroelectricity. In order to improve the efficiency of photocatalysis, semiconductor heterojunctions…
Abstract In the carbonitriding process, both carbon and nitrogen are diffused into the steel, can be carried out in a salt bath or in a furnace gas atmosphere. It is a modified carburizing process but is mostly done at a slightly lower temperature and for shorter time than carburizing. This process is one of the widel…
International audience
International audience
Abstract This paper describes the development of a simulation program to model gas nitriding processes for steels and replace traditional trial-and-error methods that are expensive, time-consuming, and often inaccurate. The authors introduce a compound layer growth model that simulates key nitriding outcomes, includin…
Klebsormidium sp. and Zygnema sp. are typical algal species forming microbiological mats in Antarctic lakes, streams and seepages of the James Ross Island (Antarctica). For physiological study focused on their photosynthesis, two strains collected at the island (Klebsormidium sp. SNOKHOUSOVA et ELSTER 2008/8, and Zygn…
We have developed a method for the oxidation of organosilicate materials at temperatures considerably lower than those typically required for uncatalyzed oxidation. The process utilizes a combustible fuel delivered to the surface in an oxidizing environment to locally oxidize materials with carbon-silicon bonds. It al…
This paper is aimed at the experimental characterization and modelling validation of shape memory alloy (SMA) negator springs. A Negator spring is a spiral spring made of strip of metal wound on the flat with an inherent curvature such that, in repose, each coil wraps tightly on its inner neighbour. The main feature o…
EFFECT OF GAMMA IRRADIATION ON MICROBIAL CELLULOSE MEMBRANE (MC MEMBRANE) FOR APPLICATION IN GUIDED BONE REGENERATION (GBR). The synthesis and effect of gamma irradiation on characteristics of microbial cellulose membrane have been evaluated. Microbial cellulose gel (nata de coco) was produce using bacteria Acetobacte…
Shape memory polymers (SMPs) are one of the most popular smart materials due to light weight and high elastic deformation capability. In this study, highly conductive carbon nanofibers paper (CNFP) was coated on the surface of SMP as a conductive layer for electro actuation of SMP. To overcome the drawback of low modu…
Shape Memory Alloys (SMAs) are smart and functional materials, which are considered good candidates for the activation of devices for the automotive, aerospace, biomedical and mechanical systems, thanks to the shape memory effect. In this work, a study on the mechanical response of NiTi SMA snake like elements has bee…
Laser processing is a single step, attractive alternative to current multi-step formation of ohmic contacts between an aluminum metallization layer and a silicon substrate in solar cell devices. However, small changes in laser parameters such as pulse duration, power density and laser wavelength can result in signific…
This paper presents three-dimensional numerical simulation of thermomechanical constitutive model for shape memory polymers. Shape memory polymers (SMPs) are a class of smart materials with high potential for application to automotive, aerostructures, and medical devices, which can benefit from its intrinsic shape cha…
This work introduces the use of digital image correlation together with infrared thermography to study non-uniform deformations due localized heating of equiatomic NiTi. While this short paper focuses on demonstrating the mechanical response of the material to localized heating, future work will also demonstrate calib…
We report a large persistent photoconductivity (PPC) in oxygen-reduced YBa2Cu3O7−δ/La2/3Ca1/3MnO3−x (YBCO/LCMO) superlattices (SLs) grown by pulsed laser deposition that scales with oxygen deficiency and is similar to that observed in single layer YBa2Cu3O7−δ films. These results contradict the previous observations,…
Shape memory alloys (SMA) are thermally activated smart materials. Due to their ability to change into a previously imprinted actual shape through the means of thermal activation, they are suitable as actuators for mechatronical systems. Despite of the advantages shape memory alloy actuators provide, these elements ar…
The main focus of this study is the optimization of a trilayer actuator comprising two layers of polypyrrole and a PVDF membrane core. Since the performance of these actuators is difficult to predict due to their mechanical and chemical properties, optimizing their output behavior such as the tip displacement and bloc…
This paper introduces a technique of inducing bulk conductivity in a polymer. The technique uses coiled copper ‘cells’ embedded into a polymer during fabrication which can subsequently create highly redundant series-parallel networks. The preceding body of work aimed to improve the conductivity of non-conducting polym…