Materials Literature
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Nondoped phosphorescent organic light-emitting diodes (OLEDs) with simplified stacks are desired for practical displaying and lighting applications. However, doping emissive layers are commonly adopted due to serious triplet quenching of phosphors. Here, we demonstrate high-efficiency nondoped bilayer OLEDs based on t…
Silver nanoparticles were prepared through an environmental friendly and cost-effective plant-mediated technique, using crude extracts of Welsh onion plant. The synthesized nanoparticles were characterized using UV-vis spectrophotometer, powdered X-ray diffractometer (p-XRD), Fourier transform infra-red (FTIR) spectro…
Abstract The forward variable area bypass injector (FVABI) is a key component of double bypass variable cycle engine (VCE) to achieve mode transition and bypass ratio adjustment. In this paper, an experimental system for FVABI was constructed based on the analysis of relevant experimental theories, and then the experi…
Abstract The porous cooling system has been proved to have significant advantages over traditional 2D conformal cooling channels due to its rapid cooling performance during the injection molding process. Compared to conventional porous systems, the conformal porous structures (CPS) have been proven to have even more u…
We report the synthesis and characterization of a two-dimensional Zn(II) coordination polymer employing a ligand with a biphenyl core containing imidazole and carboxylate groups in the presence of acetate moieties as bridging molecules. The obtained [ZnLAc]n was structurally characterized via X-ray, FTIR, TGA, PXRD, S…
Abstract ZnO, ZnO/Alginate coatings were obtained on the pre-anodized Ti6Al4V substrates by the thermal substrate deposition method (TSD). In the frame of this work, the TSD method was at first applied for obtaining ZnO coating from aqueous alginate-containing and alginate-free solutions on a metal surface. XRD, SEM a…
We investigate the pulse length dependence of the third-order nonlinear response of a gold film using pulse widths between 325 and 650 fs at λ=1320 nm via a sensitive cut-pulse technique that measures background-free self-phase modulation. We find a cubic dependence of the transmitted nonlinear power on incident peak…
A synthetic antiferromagnetic (SAF) layer is a key component in spin-transfer torque magneto-resistive random-access memory devices. This study reveals that slight fluctuations in SAF coupling at the margin of the reference layer and hard layer (i.e., concurrent reversal) can lead to write errors in the form of back-h…
Three new azaphilones, sassafrin E (1), sassafrin F (2), and sassafrinamine A (3), were isolated from the filamentous fungus Aspergillus neoglaber. The structures of the compounds were determined by nuclear magnetic resonance spectroscopy, and were found to be novel analogues of two already known compound classes; sas…
La 2 CaB 10 O 19 (LCB) exhibits excellent nonlinear optical performance. However, the high viscosity of the growth solution and the layer growth habit are the main limiting factors for fabricating large-sized LCB crystals. Raman spectroscopy is an appropriate method to study the microstructures of the crystal growth s…
With accelerating the miniaturization process of electronic devices, multifunctional optoelectronic devices that increases the compactness between the integrated devices have attracted much attention. In this work, we prepared a 1.0 cm2two-dimensional Bi2Te2.7Se0.3material by pulsed laser deposition technology, and fa…
In the presented work, an algorithm was developed for finding the optimal configuration of the blades of multi-stage axial compressors using 3D CFD modeling as the main tool and using commercial optimization programs. When developing the algorithm, special attention was paid to the development of a method for paramete…
Perovskite stannates ASnO3 (A = Ba, Sr) as transparent conducting oxides have recently attracted much attention due to their high electron mobility and high optical transparency. Here, we investigated experimentally and theoretically the composition-dependent structural, electrical, and optical properties of (La0.05Ba…
The paper deals with the determination of cohesive parameters of adhesive Scotch-Weld DP490 3M. Mode II of cohesive damage were examined. Experimental testing was performed on the test specimens to determine the me-chanical properties of the adhesive according to ASTM D7905. The results of the experimental testing wer…
Thermoplastic solid poly(2-methoxyethyl acrylate) (PMEA)-based polyurethane (PU) is synthesized through the reversible addition-fragmentation chain transfer (RAFT) polymerization and the condensation polymerization, using hydroxyl-terminated RAFT reagents and diisocyanate, respectively. Neat PMEA is a promising antith…
In this paper, we report on the design, manufacturing, and experimental validation of a second throat type supersonic exhaust diffuser used for simulated altitude testing of chemical rocket engines in the Purdue Altitude Chamber facility. The experimental validation involved a 100 lbf class paraffin-based hypergolic h…
The electromagnetic vibration and noise in motors is mainly induced by electromagnetic forces and magnetostrictive force. The low-frequency force waves have a great influence on the deformation of the motor stator core due to resonance. In this article, a 2-D electromagnetic-mechanical coupling transient model was bui…
Monoalgal and bialgal diet were tried in 2 stages of larval development of Striostrea prismatica: phase I from mixotrofic to early umbonated veliger larva and phase II until eyespot larvae. The monoalgal diets in phase I were Tisochrysis lutea, Pavlova lutheri and Nannochloropsis sp. In phase II, Tetraselmis suecica,…
We investigate thermoelectric transport properties of ferromagnetic graphene with CT-invariant quantum spin Hall (CT-QSH) effect. Considering a strong magnetic field, we calculate the charge Seebeck coefficient ${S}_{c}$, spin Seebeck coefficient ${S}_{s}$, charge Nernst coefficient ${N}_{c}$, and spin Nernst coeffici…
Propulsion R&D for “new space” companies requires solutions capable of fast iteration at an affordable price. Masten’s new “plastic” rocket engine is a revolutionary workhorse chamber for cryogenic and gaseous injector testing. The engine utilizes a plastic, ceramic, and copper design with 850-1000 psi chamber pressur…