Development of a TiO2/SiO2 waveguide-mode chip for an ultraviolet near-field fluorescence sensor
layers on a silica glass substrate and by measuring the fluorescence intensity of a solution of quantum dots dropped on the chip.
Materials Literature
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Myocardial healing using cardiac fat
INTRODUCTION: Chronic diseases, including myocardial scar healing and heart failure remission, impose huge social and economic burdens, and novel approaches are needed. Several therapeutic modalities are currently being evaluated, including cell therapy, stem cell conditioning, and cardiac tissue engineering. Areas co…
Signatures of the topological s +- superconducting order parameter in the type-II Weyl semimetal T d -MoTe 2
Abstract In its orthorhombic T d polymorph, MoTe2 is a type-II Weyl semimetal, where the Weyl fermions emerge at the boundary between electron and hole pockets. Non-saturating magnetoresistance and superconductivity were also observed in T d-MoTe2. Understanding the superconductivity in T d-MoTe2, which was proposed t…
INFLUENCE OF SOLUTION HEAT TREATMENT ON PHASE COMPOSITION AND STRUCTURE OF ZnAl40Cu(1-2)Ti(1-2) ALLOYS
Zn-Al-Cu alloys are characterised by very good tribological properties: high resistances to abrasive wear and adhesive wear, resistance to dry friction, low friction coefficient. Important disadvantages of Zn-Al alloys include, among others low structural and dimensional instability in as-cast stage and during long-pe…
MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AN AZ91 MAGNESIUM ALLOY PROCESSED THROUGH BACKWARD EXTRUSION
A cast AZ91 magnesium alloy was processed via backward extrusion (BE) method at different temperatures of 250, 350 and 450C. Metallography investigations were conducted at three different regions of BE-processed cup (wall, bottom and flow channel). The main feature observed at the wall of the BE cup was mechanical twi…
EFFECT OF CONE SIZE ON THE BONDING STRENGTH OF BIMETALLIC COMPOSITE PIPES PRODUCED BY DRAWING APPROACH
The effect of cone size on interfacial bonding strength of bimetallic composite pipe manufactured by drawing approach is studied on base of the plane strain assumption and ideal elastic-plastic model, a simple expression for the effect of cone size on the bonding strength of bimetallic composite pipes is proposed. The…
CORRELATIONS OF MECHANICAL PROPERTIES AND MICROSTRUCTURE AT SPECIFIC ZONES OF WELDED JOINT OF HIGH-STRENGTH LOW-ALLOY STEELS
This paper presents experimental testing of the mechanical characteristics and properties of samples made of high-strength low-alloy steel with two different multi pass V grove butt welded joint. Two sample groups are tested: the root pass is made by manual metal arc welding process for the former and metal inert gas…
Application of Principal Component Analysis to Investigation of Acoustic Emission Signals in Aluminum Alloys
Проведено акустико-эмиссионное исследование алюминиевых сплавов, подвергнутых испытаниям на статическое растяжение. Часть исследованных образцов содержала в рабочей части сварное соединение, что давало возможность выявить влияние на акустическую эмиссию дефектов, сосредоточенных в зоне сварного шва. При испытаниях опр…
Some exploitation properties of wood plastic composites based on polypropylene and birch plywood sanding dust; pp. 117–123
Numerous researchers are closely connected with the production and studies of partially green biocomposites. Various polymer matrices, mainly polyolefines and natural fibres as reinforcement and their combinations, are used. Some scientists use various by-products of the timber industry in preparing wood plastic compo…
Analytic properties for the honeycomb lattice Green function at the origin
Abstract The analytic properties of the honeycomb lattice Green function are investigated, where is a complex variable which lies in a plane. This double integral defines a single-valued analytic function provided that a cut is made along the real axis from w = −3 to . In order to analyse the behaviour of along the ed…
Substituted Acene Derivatives: Synthesis, Optical Property and Self‐assembly Behavior
Abstract A novel twistacene 11,12‐dichloro‐9,14‐diphenyldibenzo [ de , qr ]tetracene ( TPyC ) has been synthesized in one pot through classical Diels‐Alder cycloaddition reaction and fully characterized. Its analogues TPyO , TPyS , TPyF and TPyB were re‐prepared through the reported methods. All of them emitted blue f…
New Possibilities to Design Biogenic Calcite Particles. Influence of Cultivation Parameters and Purification on Coccolith Properties
Abstract Coccolithen sind mikrostrukturierte Calcitpartikeln, die von Mikroalgen in der Natur produziert werden. Ihre komplex strukturierte Morphologie und enge Partikelgrößenverteilung unterscheidet sie von synthetischen Partikeln und macht sie interessant für verschiedenste Anwendungsgebiete. Coccolithen können nich…
CHARACTERISATION OF OXIDE COATINGS PRODUCED ON ALUMINUM ALLOYS BY MAO AND CHEMICAL METHODS
The study compared the properties of oxide coatings formed on aluminium alloys produced by: MAO (micro -arc oxidation), and the chemical method (oxidation in acid).Morphology, microstructure and of the coatings was analysed with a scanning electron microscope SEM.Corrosion resistance were tested in potentiometer -dyna…
Gas sensing capability of spray deposited Al-doped ZnO thin films; pp. 124–130
Aluminium-doped zinc oxide thin films were deposited from zinc acetylacetonate and aluminium acetylacetonate at various aluminium concentrations and deposition temperatures by ultrasonic spray pyrolysis. The structural and morphological properties and elemental composition of these films were studied by X-ray diffract…
Consideration of Stretchable Dry Electrodes for Smart Shirts Aimed for Biological Signal Monitoring
SUMMARY Dry electrodes of a smart shirt for measuring biological signals were prepared by the additive printing method using a stretchable conductive paste with Ag fillers loading. Interfacial impedance between the electrode and skin depended on the contact pressure of electrode and the moisture of stratum corneum. Wh…
Catalyst–substrate interaction and growth delay in vapor–liquid–solid nanowire growth
Understanding of the initial stage of nanowire growth on a bulk substrate is crucial for the rational design of nanowire building blocks in future electronic and optoelectronic devices. Here, we provide in situ scanning electron microscopy and Auger microscopy analysis of the initial stage of Au-catalyzed Ge nanowire…
Magnon-assisted tunnelling in van der Waals heterostructures based on CrBr3
The growing family of two-dimensional (2D) materials that are now available can be used to assemble van der Waals heterostructures with a wide range of properties. Of particular interest are tunnelling heterostructures, which have been used to study the electronic states both in the tunnelling barrier and in the emitt…
EFFECT OF POST-HEAT TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Cu-Fe-Co POWDER ALLOY FABRICATED BY HOT PRESSING
In this study, the powder mixture which consists of Cu-Fe-Co was produced by using the method of hot pressing technique. In addition, effect of heat treatment process on microstructure and mechanical properties of this alloy was investigated. Following the hot pressing process applied on the samples, heat treatment wa…
Formation of a Diffusion Zone at the Interface of Nickel/Aluminum Bimetal
In this paper, a study of a diffusion zone at the nickel/aluminum interface is carried out. Bimetallic samples constructed from pressed plates of Nickel and Aluminum have been annealed in a vacuum furnace at a temperature above the melting temperature of aluminum. Formation patterns of diffusion zones are investigated…
Fretting Fatigue Cracking of a Center Guide Bolt Supporting the Combustion Chamber in a Heavy-duty Gas Turbine Engine
Abstract The slotted center guide bolt of the center guide feature of the lower part of the outer shell of an annular combustion chamber was found fractured in a heavy-duty gas turbine engine used for power generation, after approximately 5.500 operating hours. The incident was a one-off event and not a recurring inci…