Materials Literature
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Adopting a wet chemistry method, Au and Fe3O4 nanoparticles were functionalized on boron nitride nanotubes (BNNTs) successfully for the first time. X-ray diffraction pattern and transmission electron microscopy were used to characterize the resultant products. Subsequently, a method was proposed to fabricate heterojun…
Abstract The gas‐phase reactions of imidazole with Cu foil, CuO and Cu 2 O powders at a pressure of 10 −5 Torr are studied by means of X‐ray photoelectron spectroscopy (XPS) at room temperature for 1 h. The reactivity of gaseous imidazole is very intense with Cu foil, weak with CuO and nil with Cu 2 O. The reaction pr…
Nano-submicrostructured CaWO 4 , CaWO 4 : Pb 2+ and CaWO 4 : Pb 3+ particles were prepared by polyol method and characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), Fourier transform infrared spectra (FT-IR), thermogravimetry-differenti…
Electromagnetic interference (EMI) shielding characteristics of carbon nanofiber-polystyrene composites were investigated in the frequency range of 12.4–18 GHz (Ku-band). It was observed that the shielding effectiveness of such composites was frequency independent, and increased with increasing carbon nanofiber loadin…
Abstract The geometry, frequency and intensity of the vibrational bands of 8-hydroxyquinoline and its 5,7-dichloro, 5,7-dibromo, 5,7-diiodo and 5,7-dinitro derivatives were obtained by the density functional theory (DFT) calculations with Becke3-Lee-Parr (B3LYP) functional and 6-31G* basis set. The effects of chloride…
A series of lithium silicate glasses approaching the orthosilicate composition (66.7 mol% Li 2 O) were prepared and their 29 Si magic angle spinning nuclear magnetic resonance (NMR) recorded; this significantly extends the compositional range of glasses studied by this technique. The results indicate that the lever (b…
In this paper, we report the synthesis, characterization and observation of green luminescence in ZnO nanocages. A novel low temperature solution-based technique has been developed for growing highly porous ZnO nano-cages from coarse ZnO precursor powders. Various samples, prepared in this study, were characterized us…
The bacterial cell wall provides essential protection from the external environment and confers strength and rigidity to counteract internal osmotic pressure. Without this layer the cell would be easily ruptured and it is for this reason that biosynthetic pathways leading to the formation of peptidoglycan have for man…
PZT thin films of various thickness were deposited on Pt(111)/Ti/SiO2/Si(100) substrates by the sol?gel method. A new method to control the crystallographic orientation of the PZT thin films by modifying the coating layers in one annealing cycle is presented in this paper. PZT films with (111) and (100) preferred orie…
In the present study, attempts have been made to synthesize the nano-crystalline (Co, Ni)Al2O4 spinel powders by ball milling and subsequent annealing. An alloy of Al70Co15Ni15, exhibiting the formation of a complex intermetallic compound known as decagonal quasicrystal is selected as the starting material for mechani…
Nanocrystalline GdPO 4 : Eu 3+ phosphor layers were coated on non-aggregated, monodisperse and spherical SiO 2 particles by Pechini sol–gel method, resulting in the formation of core–shell structured SiO 2 @ GdPO 4 : Eu 3+ particles. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), field emiss…
ZnO/ZnS core–shell nanowires with the wurtzite structure have been grown using a simple catalyst-free thermal evaporation technique. The ZnO/ZnS core–shell nanowires are as long as several tens of micrometers, the thickness of the wires is about 1 µm at the bottom and 50 nm at the top respectively, and the thickness o…
Dinoflagellates constitute an important group of microorganisms. Symbiotic dinoflagellates are responsible for the primary production of coral reef ecosystems and the phenomenon of their demise is known as "coral bleaching." Blooming of the planktonic dinoflagellates is the major cause of "red tides." Many dinoflagell…
Few-walled carbon nanotubes (FWNTs) were synthesized by the methane chemical vapor deposition (CVD) method using binary catalysts Co/Mo and Co/W supported on MgO. It was found that Mo was not only a promoter for FWNT growth but also active in the formation of multiwalled carbon nanotubes (MWNTs) in our CVD process. W…
Abstract Polyethyleneterephtalate (PET) and polytetrafluorethylene (PTFE) foils were modified by plasma discharge. The effect of plasma modification on polymer surface wettability and on properties of gold coatings were studied as a function of time from plasma exposure (aging time) and polymer substrate temperature.…
2,6-Diformyl-4-methylphenol and 1,3-diamino-2-hydroxypropane template condense in the presence of Cu(NO(3))(2) and azide to produce a 3 : 3 macrocyclic ring containing an unprecedented grouping of seven copper(ii) ions within the macrocyclic cavity, with the seventh metal completing a body-centred heptanuclear lattice.
Abstract A systematic substitution of Ge, Si, C and Co for Ga in the non‐stoichiometric Ni–Mn–Ga alloys was performed. The relationship between the compositions of different elements including Ni, Mn, Ga, Ge, Si, C, Co, In and martensitic transformation temperature ( M s ) was studied in detail for the present alloys…
X-ray single-wavelength anomalous diffraction (SAD) data from a crystal of proteinase K were collected using synchrotron radiation of 0.98 A wavelength at SER-CAT 22-ID beamline, Advanced Photon Source, Argonne National Laboratory. At this wavelength, the expected Bijvoet ratio resulting from the presence of one calci…
PhaR from Paracoccus denitrificans functions as a repressor or autoregulator of the expression of genes encoding phasin protein (PhaP) and PhaR itself, both of which are components of polyhydroxyalkanoate (PHA) granules (A. Maehara, S. Taguchi, T. Nishiyama, T. Yamane, and Y. Doi, J. Bacteriol. 184:3992-4002, 2002). P…
Nanotechnology is finding its use as a potential technology in consumer products, defense, electronics, and medical applications by exploiting the properties of nanomaterials. Single-walled carbon nanotubes are novel forms of these nanomaterials with potential for large applications. However, the toxicity studies on t…