Materials Literature
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Magnetic shape memory alloys (MSMAs) have attracted interest because of their considerable recoverable strain (up to 10%) and fast response time (1 kilohertz or higher). MSMAs are comprised of martensitic variants that have tetragonal unit cells and a magnetization vector that is innately aligned with the short side o…
In this work, a volumetric-deviatoric split in microplane formulation is considered for modeling of shape memory alloys. In the microplane theory, macroscopic stress tensor is projected into the microplane stresses that are decomposed to either Volumetric-Deviatoric-Tangential (V-D-T) split or Volumetric-Deviatoric (V…
High performance optical metering structures in airborne and space applications need to exhibit dimensional stability in demanding thermal and mechanical environments. Materials for this application should have a low coefficient of thermal expansion, high thermal diffusivity, high specific stiffness and exhibit good d…
Schiff bases obtained from 5-chlorosalicylaldehyde with cyclopropylamine, and 4-methoxysalicylaldehyde with cyclopentylamine, were used as ligands for Zn(II) resulting in two mononuclear zinc complexes, [Zn(SalPr)2] and [ZnI2(SalPt)2], where SalPr is 4-chloro-2-(cyclopropyliminomethyl)phenolate and SalPt is 2-(cyclope…
We report a degradation behavior of fully transparent oxide thin film transistor under dynamic bias stress which is the condition similar to actual pixel switching operation in active matrix display. After the stress test, drain current increased while the threshold voltage was almost unchanged. We found that shorteni…
In this work, the possibility of using neutral sulfite semi-chemical (NSSC) bagasse pulp mixed with hardwood chemimechanical pulp (CMP) and bleached softwood kraft pulp (BSKP) was investigated with the aim of reducing hardwood and BSKP consumption. The bagasse NSSC pulp had a digester yield of about 73% and was unblea…
ABSTRACT A new method of synthesis of poly(ester carbonate)s, based on the reaction of dihydroxy compounds with diphenyl dicarbonates containing ester groups was presented. The monomers utilized were diphenyl dicarbonates of cis/trans‐1,4‐cyclohexane dicarboxylate and of terephthalate units with butanediol or bispheno…
This paper deals with a new application of diblock methoxy polyethylene glycol‐polylactide block copolymers, a class of synthetic biomaterials largely studied in the pharmaceutical and biomedical fields owing to their favorable properties such as biocompatibility, biodegradability, low immunogenicity, and good mechani…
The ITER Central Solenoid has 36 interpancake joints. The joints are required to have a resistance below 4 nOhm at 45 kA at 4.5 K. The US ITER Project Office developed and qualified a sintered joint for the interpancake joints that consistently showed exceptionally low dc resistance of 0.13 nOhm at up to 80 kA in the…
Cu-dielectric-Si hybrid plasmonic waveguide (HPW)-based plasmonic Bragg reflectors (PBRs) are fabricated on an SoI platform using standard CMOS technology and characterized in the 1515-1615-nm wavelength range. Optical stop-bands are experimentally observed, depending on the grating size and the number of grating peri…
We observe the formation of {101¯5} facets on nanocolumnar films of AlN grown by plasma-assisted molecular beam epitaxy on Si (111) wafers at 1000 °C and N-rich conditions. InN/AlN multiple quantum wells are grown on top of the semipolar facets of AlN. Scanning transmission electron microscopy and X-ray diffractometry…
Using first principles calculation based on density-functional theory, we adopted internal and external two mechanisms to manipulate the band structures of wurtzite and zinc-blende GaAs/InAs-core-shell nanowires (NWs) along the [0001] and [111] directions, respectively. Variational geometry size and chemical component…
Lead titanate PbTiO 3 films were deposited onto Pt(111)/Ti/SiO 2 /Si(100) substrates by the aerosol assisted chemical vapor deposition (AA-CVD) process followed by thermal annealing at 550 °C for 12 h. Piezoresponse force microscopic observations revealed a nano laminar domain structure in the PbTiO 3 grains, and we a…
Abstract An efficient rare earth metal complex‐catalyzed cycloaddition reaction of CO2 with propylene oxide using Hdpza (di(2‐pyrazyl)amine) as a N‐donor ligand has been accomplished in good to excellent yields with high selectivity. The effects of different rare earth metal salts, ligands and reaction conditions were…
The quantitative analysis of surface-enhanced Raman spectra using scattering nanoparticles has shown the potential and promising applications in in vivo molecular imaging. The diverse approaches have been used for quantitative analysis of Raman pectra information, which can be categorized as direct classical least squ…
Shape memory alloys (SMA) provide unique functional features and several SMA-based heat engines have been proposed in recent years, exploiting the thermally induced recovery capabilities of such class of materials. These engines represent simple and environmentally-friendly solutions to obtain mechanical energy from l…
Nowadays companies working in the field of industrial applications realize that traditional electromagnets reach their technical limits. Additionally, there is an increasing awareness for resource-efficiency and safety, due to shortages in resources and rise in legal requirements. Furthermore customers demand more and…
The effect of tungsten doping and hydrogen annealing treatments on the photoelectrochemical (PEC) performance of bismuth vanadate (BiVO4) photoanodes for solar water splitting was studied. Thin films of BiVO4 were deposited on ITO-coated glass slides by ultrasonic spray pyrolysis of an aqueous solution containing bism…
ABSTRACT Antistatic polyurethane (APU) is prepared by in situ polymerization of polyester glycol (PEL), 4,4′‐diphenylmethane diisocyanate (MDI), 1,4‐butanediol (BDO), and antistatic agent (AA) formed by dissolving sodium salts in polyethylene glycol (PEG). Comprehensive properties of the APU are investigated by the FT…
In this work, we investigate the initial interaction of water and oxygen with different surface reconstructions of GaP(100) applying photoelectron spectroscopy, low-energy electron diffraction, and reflection anisotropy spectroscopy. Surfaces were prepared by metal-organic vapour phase epitaxy, transferred to ultra-hi…