Materials Literature
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Cation exchange reactions have been exploited in the last years as an efficient tool for the controlled chemical modification of premade nanocrystals. In this work, the gradual transformation of Ag 2 S nanocrystals into Au 2 S analogues is performed by sequential cation exchange reactions that allow for a fine control…
The current work was undertaken to systematically examine the as-cast microstructure and carbides in a developed austenitic hot work die steel produced by conventional electroslag remelting (ESR) and continuous directional solidification of electroslag remelting (ESR-CDS). In addition, the growth pattern of carbides w…
In this work, the microstructure, the formation characteristics, and the growth mechanism of eutectic borocarbide during solidification in high boron high speed steel with 2.0 wt% B–0.4 wt% C–6.0 wt% Cr–4.0 wt% Mo–2.0% Al–1.0 wt% Si–1.0 wt% V–0.5 wt% Mn are investigated utilizing liquid quenching technology. The exper…
Fabrication of porous clay refractory insulating specimens from Iraqi kaolin with different percentage of Expanded Polystyrene (EPS) waste crumbs additions were investigated. After mixing and forming by hand molding, the specimens was dried and fired at 1300 oC. The structural, physical, mechanical and thermal propert…
Photoinitiated chemical vapor deposition (PICVD) has become attractive for selective and specific surface functionalization, because it relies on a single energy source, the photons, to carry out (photo-) chemistry. In the present wavelength (λ)-dependent study, thiol (SH)-terminated thin film deposits have been prepa…
Hydrogels made of various materials using a variety of methods have been extensively studied for use in tissue engineering, and collagen is one of the most common material used for its biocompatibility due to it being a major component of the extracellular matrix (ECM). Furthermore, the alignment of collagen fibres ha…
Particle-matrix interfaces can play an important role in heat propagation through particulate composites. We investigated the possibility of using frequency domain thermoreflectance combined with a numerical thermal model to measure in situ the thermal resistance of the particle-matrix interface in particulate composi…
Taking inspiration from diatom hierarchically organized porosity, synthetic porous monoliths have been synthesized through rational designs while combining sol–gel chemistry, emulsions, Pickering-based emulsions, and lyotropic mesophases. We have described the synthesis of the Si(HIPE) series employing traditional emu…
Abstract The collapse of carriers into polarons strongly impacts properties such as charge transport, separation and recombination that are of fundamental relevance to opto-electronic devices such as photovoltaics. Here we observe the real-time process of the collapse of a wavefunction using ultrafast spectroscopy. We…
Nitroxide-mediated polymerization was successfully employed for well-defined graft copolymerization of styrene (St) monomer from cellulose (Cell) backbone. For this purpose, Cell was acylated by 2-bromoisobutyryl bromide, and then 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) was immobilized onto Cell backbone using a…
Abstract Trifluoromethylthio‐substituted corannulene can be easily synthesized in good yield by the reaction of iodocorannulene with CuSCF 3 . Oxidation with meta ‐chloroperbenzoic acid ( m CPBA) yields the corresponding sulfonyl compound which exhibits the largest anodic shift of the redox potential caused by a singl…
Abstract The dehydration reaction of 1,5‐pentanediol was performed over CeO 2 and modified CeO 2 (CeO 2 −MnO x , CeO 2 −ZnO, CeO 2 −MgO, CeO 2 −CaO, CeO 2 −Na 2 O) catalysts in a fixed‐bed tubular reactor at 350 °C and an atmospheric pressure. The undoped CeO 2 produced a mixture of the products containing mainly 4‐pe…
We studied glass transition in a nonvibrating granular system composed of magnetic steel beads under an unsteady magnetic field. In this model system, particle concentration and effective temperature can be changed independently. We analyzed several particle concentration cases. As concentration increases, the system…
Abstract Nanoscale selected‐area chemical engineering is challenging but critical to manipulate carrier transport and realize multifunctional characteristics in advanced devices. Undesired chemical contaminants might occur in conventional lithographic processes and would degrade the characteristics of chemical‐sensiti…
A rigid molecular cleft shows unique aggregation-induced emission (AIE) by restricting the motion of aldehyde through intermolecular lone pair⋅⋅⋅π interactions, which are tuned by side chains. This AIE luminogen was demonstrated to work as a fluorescent sensor for aniline and an optical chirality sensor for chiral ami…
Abstract Bimetallic nanoporous Pd–Ag solid solution alloys with hierarchical structure were prepared by dealloying melt-spun Al–Pd–Ag ribbons in a 10 wt% H 3 PO 4 solution. Electrocatalytic properties of nanoporous Pd–Ag alloys were measured in comparison with the nanoporous Pd without Ag. Experimental results showed…
Abstract Bimetallic nanoparticles (NPs) play a pivotal role in promoting high activity and selectivity towards various industrially important reactions in comparison to single metal NPs due to their modulated electronic and surface properties. Herein, we report the synthesis of non‐precious CoCu NPs, which serve as an…
Abstract We report on the low-temperature photoconductive properties of few layer p -type tungsten diselenide (WSe 2 ) field-effect transistors (FETs) synthesized using the chemical vapor transport method. Photoconductivity measurements show that these FETs display room temperature photo-responsivities of ∼7 mAW −1 wh…
A template-free all-aqueous bulk preparation of robust hollow capsules having a gelatin shell from all-in-water double emulsions is reported. The hot (>40 °C) quaternary system water/polyethylene glycol (PEG)/gelatin/alginate is shown to spontaneously form PEG-in-gelatin-in-PEG double water emulsion droplets having a…
The long-term shifts of corrosion potential are important in predicting the likelihood of localized corrosion and stress corrosion cracking (SCC) of carbon steel used for storing radioactive wastes in underground storage tanks. Although considerable work has been done in understanding the passivity and corrosion poten…