Materials Literature
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We performed a first principles study to investigate the interaction of tetrakis-ethylmethylaminohafnium (4[(C2H5)(CH3)N]Hf, TEMAHf) precursors with an OH-terminated Si (001) surface that is the initial stage of atomic layer deposition (ALD). When TEMAHf reacted on the OH-terminated Si surface, there were two reaction…
We have designed, fabricated, and characterized a low-stressed silicon nitride (SiN) membrane nanosieve (100 microm x 100 microm) using an anisotropic reactive ion etching (ARIE) combining with gas mixture, thus maintaining compatibility with the complementary metal-oxide semiconductor integrated circuit (CMOS IC) pro…
Photonic crystals with tunability in the visible or near-infrared region have drawn increasing attention for controlling and processing light for the active components of future display. We prepared polystyrene-b-poly(2-vinyl pyridine) (PS-b-P2VP) lamellar films which is hydrophobic block-hydrophilic polyelectrolyte b…
Cinnamic acid and harpagoside are important active components present in Scrophularia ningpoensis, which has been used in the treatment of several diseases such as pharyngalgia. In the present study, a novel method based on high performance liquid chromatography (HPLC) following microwave-assisted extraction (MAE) was…
Based on hybrid inorganic/organic n-ZnO nanorods/p-GaN thin film/poly(3-hexylthiophene)(P3HT) dual heterojunctions, the light emitting diode (LED) emits ultraviolet (UV) radiation (370 nm - 400 nm) and the whole visible light (400 nm -700 nm) at the low injection current density. Meanwhile, under the high injection cu…
Nanostructured materials, designed for enhanced light absorption, are receiving increased scientific and technological interest. In this paper we propose a physical criterion for designing the cross-sectional shape of plasmonic nanowires for improved absorption of a given tightly focused illumination. The idea is to d…
Transparent AlPO 4 mesoporous glasses codoped with different amounts, as well as different molar ratios, of Rhodamine 6G (Rh6G) and Coumarin 102 (Cou102) were fabricated by a dipping method. Solidification of dyes in mesoporous AlPO 4 glasses was probed by 27 Al and 31 P solid state NMR techniques. The interaction of…
Polymer composites based on high density polyethylene (HDPE) and carbon nanofiber (CNF) were fabricated by melt compounding. The dependences of electrical conductivity of HDPE-CNF composites on filler concentration, temperature, and applied electric field were investigated. The results showed that the conductivity of…
The plasma treating process used to adjust the functional groups and modifying surface properties and mechanical behavior is a very important treatment method. Many researches have shown the results, especially in the versatility of polymer material fields. In this study, a pen-type radio frequency plasma system was u…
It is possible, by selective excitation of homogeneously broadened lines, to produce response signals, which are orders of magnitude narrower than the original lines. The new type of echo, which allows detecting such signals, and the formalism, useful for understanding the phenomenon, as well as the experimental examp…
We used Fourier transform infrared (FT-IR) spectroscopy to characterize silicon dioxide (SiO(2)) films on a 4H-SiC(0001) Si face. We found that the peak frequency of the transverse optical (TO) phonon in SiO(2) films grown on a 4H-SiC substrate agrees well with that in SiO(2) films grown on a Si substrate, whereas the…
Effective management of wound healing is a considerable challenge for clinicians. Patients underlying condition, accurate assessment of the wound and exudate, as well as selection of an appropriate dressing is all important factors for success. A variety of dressings are available to the clinician for the management o…
Abstract DFT and Moller Plesset (MP2) calculations were applied to study of isomery scheme in formazan. Formazan that can be presented by three tautomers and eight isomers has various applications in dyes, complexes, and biochemistry. The structures of its isomers and related transition states were optimized, and impo…
Membranes were prepared with two polyimides (Matrimid and 6FDA-TMPD) having a content of tricresylphosphate ranging from 0 to 33% (w/w). The specific volumes of these membranes were used to determine the partial specific volume of tricresylphosphate in the membranes, the hypothetical specific volumes of the pure polyi…
CuO nanosheets approximately 0.8 nm thick were synthesized under ambient conditions within a few hours using a surfactant lamellar mesophase as a soft template. In aqueous media, metal ions and anionic surfactants form a lamellar mesophase. In the lamellar layers, metal ions can crystallize without structural collapse…
Abstract SiO2‐passivated Si degrades when exposed to a ‘damp‐heat’ atmosphere of 85% relative humidity and 85 °C. We find the effective surface recombination velocity at the SiO2/Si interface of phosphorus‐diffused (111) Si to increase from 2200 to 11 000 cm/s after 7 days of damp‐heat exposure. This degradation is of…
A new polytype of AgCoO(2) delafossite has been prepared from the ordered OP4-(Li/Na)CoO(2) layered compound using ion-exchange reaction in molten salts. As expected from the structural model assuming a topotactic process, the lamellar structure of this new polytype is an alternate combination of the already known 2H…
The dependence of (Al)GaN/AlGaN multiquantum well (MQWs) optical efficiency and defect incorporation on the growth temperature (Tg) of the optically active region was investigated. Marked increase in MQW photoluminescence (PL) intensity was observed for increasing Tg. Correspondingly, increasing Tg also significantly…
In recent times, there has been an ever increasing demand for ocular drugs to treat sight threatening diseases such as glaucoma, age-related macular degeneration and diabetic retinopathy. As more drugs are developed, there is a great need to test in vitro permeability of these drugs to predict their efficacy and bioav…
Control of the stabilization/destabilization of supported lipid bilayers (SLBs) on nanoparticles is important for promotion of their organized assembly and for their use as delivery vehicles. At the same time, understanding the mechanism of these processes can yield insight into nanoparticle-cell interactions and nano…