Phase structure and electrical properties of (1-x)Bi1+yFeO3-xBaTiO3 lead-free ceramics with different Bi contents

Journal of Materials Science: Materials in Electronics - In this work, (1-x)Bi1+yFeO3-xBaTiO3 (x?=?0.25, 0.30, 0.35, 0.40; y?=?? 0.02, 0.00, 0.02, 0.04)...     

Color tunning and temperature-dependent photoluminescence properties of Sr0.3Ca0.7−x−y(MoO4)2: xDy3+, yEu3+

Journal of Materials Science: Materials in Electronics - A series of Sr0.3Ca0.7?x?y(MoO4)2: xDy3+, yEu3+ phosphors with a tunable color was prepared by the conventional co-precipitation...     

Influences of La3+ ion substitution on dielectric,susceptibility and permeability properties of Mg–Zn ferrite nanoparticles

Journal of Materials Science: Materials in Electronics - Nanoparticles of lanthanum-substituted magnesium zinc ferrites with general formula Mg0.6Zn0.4La2yFe2?2yO4 (where y?=?0.0,...     

Phase Equilibria in the Cd–Ga–As–Te System

Inorganic Materials - An isothermal subsolidus x–y–z phase diagram, a block diagram of invariant phase equilibria, and a model for the p–T projection of the...     

Preparation of Reference Material 8504, Transformer Oil

A new reference material (RM), RM 8504, has been prepared for use as a diluent oil with Aroclors in transformer oil Standard Reference Materials (SRMs) 3075 to 3080 and SRM 3090 when developing and validating methods for the determination of polychlorinated biphenyls (PCBs) as Aroclors in transformer oil or similar matrices. SRMs 3075-3080 and SRM 3090 consist of individual Aroclors in the same transformer oil that was used to prepare RM 8504. A unit of RM 8504 consists of one bottle containing approximately 100 mL of transformer oil. No additional constituents have been added to the oil.     

Reconstruction of the friction moment in a mobile cylindrical coupling from measurements of temperature

For slide bearings with different conditions of rotation of the shaft mathematical thermal models (MTM) are developed that involve superpositions of both two-dimensional and two- and three-dimensional elements. Based on the solution of a boundary-value inverse problem by the method of iteration regularization, a technique is suggested for reconstructing the friction moment from measurements of temperature.Institute of Nonmetallic Materials of the Yakutsk Science Center, Siberian Branch of the Russian Academy of Sciences. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 65, No. 6, pp. 730–734, December, 1993.     

Flexible ZnO-cellulose nanocomposite for multisource energy conversion

Materials with the ability to harness multiple sources of energy from the ambient environment could lead to new types of energy-harvesting systems. It is demonstrated that nanocomposite films consisting of zinc oxide nanostructures embedded in a common paper matrix can be directly used as energy-conversion devices to transform mechanical and thermal energies to electric power. These mechanically robust and flexible devices can be fabricated over large areas and are capable of producing an output voltage and power up to 80 mV and 50 nW cm(-2) , respectively. Furthermore, it is shown that by integrating a certain number of devices (in series and parallel) the output voltage and the concomitant output power can be significantly increased. Also, the output voltage and power can be enhanced by scaling the size of the device. This multisource energy-harvesting system based on ZnO nanostructures embedded in a flexible paper matrix provides a simplified and cost-effective platform for capturing trace amounts of energy for practical applications.     

Materials selection using patent information: A function- and application-based analysis of aircraft interior structures

Materials selection in product design is a complex decision-making activity due to the necessity of embodying technical requirements into those related to customer, safety, environmental, economic and social aspects. Technological developments have been increasing materials options, thus demanding the manipulation of large amounts of information and data to identify them. This study proposes a monitoring procedure to identify and select materials in innovative product design using patent information. It applies bibliometric techniques to select relevant patents using two different retrieval strategies: (i) driven by the function and (ii) by the application of the product. A case study to search for a more sustainable composite material for aircraft interior structures reveals distinct sets of data and types of technical solutions depending on the patent retrieval strategy used. The function-based patent retrieval strategy found more disruptive solutions, whereas the application-based strategy identified mainly improvements in current technology developed by partners of the aeronautical industry.     

Untersuchungen über die Bestimmung der Zähigkeit von Bauteilen im Apparatebau durch Messungen an Modellbehältern von praxisähnlicher Größe. Versuche mit Behältern aus Kesselblech H 1 bei Temperaturen −80°C

Research into the Determination of the Ductility of Structural Elements in Plant Construction by Measurement on Model Vessels of Near Industrial Size— Tests on Boiler Plate Vessels (Kesselblech H 1) at Temperatures Down to ?80°C The paper deals with a research program of the Dechema working group “Materials for Chemical Apparatus”, by which an attempt is made to correlate ductility as a characteristic materials property with ductility changes to be expected in structural elements and structures. On a low temperature test stand model containers are loaded internally until bursting and the deformations of a container bottom having a complex shape are measured. Deformation and bursting pressure vs. temperature support the preliminary conclusion that the embrittlement temperature for such structures is lower than the notch toughness transition temperature of the material. Corroboration of this finding requires further work with other materials and structures.     

Metal organic chemical vapor deposition and investigation of ZnO thin films grown on sapphire

A new type of large area metal organic chemical vapor deposition (MOCVD) system for the growth of high quality and large size ZnO materials is introduced. Materials properties of the un-doped, n- and p-doped ZnO epi-films grown on sapphire substrates by this MOCVD system are studied by various techniques, including high resolution X-ray diffraction (XRD), UV-Visible optical transmission (OT), photoluminescence (PL) and photoluminescence excitation (PLE), synchrotron radiation X-ray photoelectron spectroscopy (SR-XPS). The wurtzite (w) ZnO crystal structures grown with primary (0002) orientation were identified. Results have shown the high crystalline quality of MOCVD-grown ZnO films, indicated by the narrow XRD, PL and Raman line widths, strong PL signals, sharp OT edge and smooth surface. In particular, high p-type carrier concentration of > 10¹⁷ cm^− 3 have been achieved besides the good n-type doping in ZnO.     

In situ growth of Ni(OH)2-porous nitrogen-doped graphene composite onto Ni foam support as advanced electrochemical supercapacitors materials

Journal of Materials Science: Materials in Electronics - High-surface-area Ni(OH)2-porous nitrogen-doped graphene (Ni(OH)2@p-NG) composite was electro-synthesized via a facile...     

Improved electrical,thermal, and mechanical properties of silicone rubber-based composite dielectrics by introducing one-dimensional SiC fillers

Journal of Materials Science: Materials in Electronics - In this paper, two kinds of one-dimensional (1D) silicon carbide (SiC) fillers, including silicon carbide whiskers (SiCw) and silicon...     

Investigation of electrospray-deposited PEDOT:PSS thin film using an electrohydrodynamic jet printer for inverted QDLEDs

Journal of Materials Science: Materials in Electronics - In general, Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) is spin-coated as a hole transport layer in multi-structured...     

Enhanced dielectric properties of PVA/PEDOT:PSS/MnO2 based composites for electronic applications

Journal of Materials Science: Materials in Electronics - Polymer composite (PC) films comprising polyvinyl alcohol (PVA) and poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS)...     

Influence of Au plasmons and their synergistic effects with ZnO nanorods for photoelectrochemical water splitting applications

Journal of Materials Science: Materials in Electronics - Herein, Au plasmons and their synergistic effects with ZnO nanorods (ZNs) have been investigated for photoelectrochemical (PEC) water...     

Three and one-dimensional hierarchical α-Fe2O3 nanostructures for photoelectrochemical water oxidation

Journal of Materials Science: Materials in Electronics - Herein, we report the synthesis of three-dimensional (3D) and one-dimensional (1D) hierarchical hematite (α-Fe2O3) nanostructures on...     

High-performance Ag nanowires/PEDOT:PSS composite electrodes for PVDF-HFP piezoelectric nanogenerators

Journal of Materials Science: Materials in Electronics - The highly transparent and conductive poly(3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS)/Ag nanowires (NWs) composite...     

New simultaneously doped pyrochlore compounds (Ca1−xCex)2(ZrxNb1−x)2O7 negative temperature coefficient ceramics

Journal of Materials Science: Materials in Electronics - New simultaneously doped pyrochlore compounds (Ca1?xCex)2(ZrxNb1?x)2O7 (x?=?0.05, 0.25, 0.5, 0.75) are prepared by...     

Third order non-linear optical,diffractional, electrical,laser damage threshold,elemental and surface studies of l-methionine potassium hydrogen phthalate (LMKHP) single crystals

Journal of Materials Science: Materials in Electronics - In this study, semi-organic non-linear optical (NLO) crystal l-methionine potassium hydrogen phthalate (LMKHP) was prepared via the solvent...     

The effect of La3+ substitution on the remanent magnetization,ferromagnetism, and antiferromagnetic charge-ordered phase in Sm0.5Ca0.5MnO3

Journal of Materials Science: Materials in Electronics - The influence of La3+ substitution on the remanent magnetization, ferromagnetic (FM) properties, and charge-ordered (CO) antiferromagnetic...