Materials Literature
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The aim of this study was to evaluate the effect of the hexyl acrylate conjugated polyamidoamine (PAMSM) dendrimer on different cell lines in the presence and absence of serum. Although the positively charged dendrimers including PAMAM has been considered as efficient gene carriers, their cytotoxicity is a major barri…
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Metal organic framework (MOF) has recently attracted much attention due to its uniform pores consiting of metal ions and organic ligands. MOF was conventionally produced by a liquid phase method such as a hydrothermal way, but gas-solid phase reaction to form MOF on a substrate using ligand gas was recently reported b…
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The axial and radial phase plasma dynamics of PF-1000 plasma focus device with respect to filling gas pressure has been studied using 5-phase Lee model code (RADPFV5.15de.xls). The device is fitted into the code using data from standard laboratory experiment. The fittingis completed when the overall current profile ge…
Using the density matrix renormalization group method of the spin 1/2 magnetic behavior of the compound K 3 Cu 3 AlO 2 (SO 4 ) 4 , which represents the physical realization of the diamond chain, was studied. For the values J 1 = J 3 = 132K, J 2 = 336K of coupling constants we obtained the magnetization plateau in the…
In this paper, we show the impact of channel thickness scaling on material and transistor behavior. we present effect of the strain on energy bandgap in scaled Si and Ge slabs for varying thickness. For lower effective mass III-V channel materials, influence of the lower density of states and contribution of multiple…
The pulsed laser deposition method has been used to fabricate AlInGaPAs/GaAs/Si nanoheterostructures for cascaded photoelectric converters operating at wavelengths in the range of 300–1300 nm. The structural and luminescent structures of AlInGaPAs nanofilms on GaAs and GaAs on Si were studied. The spectral characteris…
We have found three suspected self-contamination sources from PVA brushes using high resolution AFM imaging and fluorescence microscopy. The first source is thin layers on the surface of the fresh (not used) PVA brushes. The second source is a weariness of the brush surface during the cleaning process. The third sourc…
In this study, in order to evaluate the fatigue crack propagation in solder joints of printed circuit boards (PCBs) under a condition close to the actual temperature change and distribution, a die-attached-type specimen that generates heat owing to energization was fabricated. Subsequently, synchrotron radiation X-ray…
By introducing a sub-wavelength square nanohole in a semitransparent thin silver film, the penetration depth and the propagation length of the evanescent field can be reduced remarkably, confining the excitation field to a very small region. The excitation volume in the proposed structure is reduced to only 1.8% of th…
In this work, we present a simulation based study of perovskite solar cells to determine the best halide composition of methyl ammonium lead halide perovskite for the light absorbing layer of solar cells. We explore the performance of the two most commonly used configurations of perovskite solar cells: p-i-n and n-i-p…
Using rf cathode sputtering of a target in the oxygen atmosphere, Ba 0.6 Sr 0.4 TiO 3 solid solution thin films have been formed on the single-crystal Si(001) cut surface and their crystal structure, microstructure, and optical characteristics have been investigated. It is shown that the films are optically anisotropi…
Using the method of floating-zone recrystallization with a temperature gradient, AlInPSbAs/InAs heterostructures for thermophotoelectric converters operating in the wavelength range of 500–3200 nm are obtained. The use of the AlInPSbAs quinary solid solutions as an active region thermophotoconverters allows one to inc…
The localization dynamics of photo-generated excitons in ZnO/MgZnO and CdZnO/MgZnO quantum wells (QWs) are studied using the Monte Carlo simulation of exciton hoping for the temperature range of 5 to 300K. The simulated result is compared with the experimental photoluminescence (PL) data and a reasonable agreement is…
The relationship between the leveling power of electrolytes, the primary current distribution, and the microdistribution of the metal deposition rate is considered. For electrolytes with positive, zero, and negative leveling power, the calculations of microdistribution of metal deposition rate are carried out with reg…
Cancer is the second leading cause of death in the USA, following cardiovascular disease. Treating cancer using conventional therapies is associated with low response rates and high toxicity, because these therapies usually lack specific tumor accumulation. Loading anticancer drugs into intelligently designed polymeri…
Three current density levels, $2 \times 10 ^{4}\,\mathrm{A} /cm^{2}$, $2.5 \times 10 ^{4}\,\mathrm{A} /cm^{2}$ and $3 \times 10 ^{4}\,\mathrm{A} /cm^{2}$, were selected to conduct the electromigration tests on the Cu pillar bump samples at ambient temperatures of $100 ^{\circ}\mathrm{C}, 125 ^{\circ}\mathrm{C}$ and $1…
The electron emission properties of submicron Si, GaAs, InSb, and InAs semiconductor particles and their multigrain structures have been investigated. The effect of the properties of nanoparticles on the field and secondary emissions has been established. A scanning electron microscopy-based method for measuring the s…
Cyanoethylation of natural glycyrrhetic acid methyl ester gave the corresponding 3β- O -(2-cyanoethyl) derivative which was treated with sodium azide to obtain a novel tetrazolyl derivative of biologically active triterpenoid, methyl 3β-[2-(1 H -tetrazol-5-yl)ethoxy]-11-oxoolean-12-en-30-oate.