Materials Literature
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A procedure for depositing thin films of carbon nanostructures is described that overcomes the limitations typically associated with solution based methods. Transparent and conductively continuous carbon coatings can be grown on virtually any type of substrate within seconds. Interfacial surface tension gradients resu…
Polygonatum verticillatum is the main ingredient of Astavarga. Astavarga is the important ingredient of various classical Ayurvedic formulations like Chavyanprash. Astavarga has been assigned various medicinal properties by ancient Materia Medica dealing with Ayurveda. As per Ayurveda the main property of this plant i…
We investigated the “interdigitated double layer” strategy, with the objective to transfer to water hydrophobic photoluminescent ZnO nanocrystals (Ncs) stabilized by a hydrophobic ligand (octylamine). This strategy relies on the formation of a double layer around the Ncs by interdigitation of an added surfactant withi…
As a part of the research and development for the nuclear waste disposal concept suitable to the advanced fuel cycle systems and its performance evaluation, the iron-phosphate glass is examined as an alternative waste form for high level waste generated from pyrochemical reprocessing. In order to enhance the waste ele…
Diphenylsilylated double four-membered ring (D4R) spherosilicate possessing eight stable silanol groups ((R1R2(HO)SiO)8Si8O12, R1 and R2 = Ph: PP(OH)-D4R) has been synthesized by silylation of D4R silicate ([Si8O12]8−) with chloroethoxydiphenylsilane (ClSi(OEt)Ph2) followed by subsequent hydrolysis. PP(OH)-D4R solid i…
Mossbauer spectroscopy measurements have been carried out in nano particles of Fe3O4 to understand in a detailed manner about the point defects that are present and compared with the results of the bulk magnetite. Mossbauer measurements have been carried out in the as formed magnetite nano particles and subsequent to…
Natural rubber (NR)-barium ferrite (BaF) composites (RFCs) have been prepared. Structural features of the composites were characterized by Infrared spectroscopy and scanning electron microscope (SEM). Differential scanning calorimetry (DSC) analysis showed that there is small variation of glass transition temperature…
A variety of internally N-alkylated N-confused porphyrins were prepared in a stepwise manner through the protection of the reactive peripheral nitrogen atom. NH-Tautomerism in N-confused porphyrins was found to be regulated by N-alkylation, which enabled us to obtain discrete information on two important NH-tautomers…
Multilayered thin-film structures incorporating a planar junction of two molecular semiconductors, subphthalocyanine (SubPc) and iron tetrakis(1,2,5-thiadiazolo)porphyrazine (FeTTDPz) were fabricated using vacuum evaporation technique. Photovoltaic properties of such structures were tested. The open circuit voltage me…
Time-dependent drift of resistance in chalcogenide glasses leads to instabilities in phase-change random access memory (PCRAM). To reveal the origin of the resistance drift, mechanical stress relaxation and electrical resistance measurements were conducted on amorphous Ge 2 Sb 2 Te 5 thin films under the same sample c…
We show that a nematic liquid crystal confined in sinusoidal microwrinkle grooves imposing antagonistic boundary conditions exhibits noteworthy structural transitions of nematic order and associated line defects under the variation of temperature (T). The defects also show unusual temperature-dependent fluctuations wh…
Mixed oxides of 5 wt% Cu/Ti1−xZrxO2 (x = 0, 0.3, 0.5, 0.7, 1.0) were synthesized using the impregnation–urea coprecipitation method and the catalysts prepared were assessed for the selective catalyst reduction (SCR) of NO with C3H6. A significant improvement of the catalytic activity was found over the Zr-doped cataly…
Lanthanide orthovanadate erythrocyte-like EuVO4 particles were obtained via a facile, environmentally friendly hydrothermal process and were demonstrated to have an affinity for histidine (His) and the common protein BSA. Fourier transform infrared (FTIR) and Raman spectroscopy indicated an interaction between EuVO4 a…
Purpose . Biodegradable polymeric nanoparticles have been used frequently as gene delivery vehicles. The aim of this study is to modify bioadhesive PLGA nanoparticles with novel synthetic mannan‐PEG‐PE (MN‐PEG‐PE) to obtain active targeted gene delivery system. Methods . Mannan‐PEG‐PE ligands were synthesized and modi…
Extensive work has been done to explore the potential promises of plant systems in the synthesis of metal nanoparticles. Herein, a convenient and rapid process for the formation of silver nanoparticles with natural reducing and capping agents of Daucus carrota (L.) is reported. The synchronization of secondary metabol…
The present paper deals with the applicability of biological monitoring to the assessment of exposure and possible effects deriving from exposure to engineered nanomaterials (NM). After establishing a conceptual framework in which human biomonitoring should be placed, the paper reviews the critical issues related to t…
Structure and morphology of nanowires (NWs) and nanotubes (NTs) of LnO/OH (Ln = La, Ce, Sm, Er), grown by displacement reaction inside anodic alumina membranes (AAM), were investigated as function of the deposition time and electrolytic bath temperature. Depositions performed at 6°C gave only tubular morphology for al…
Porous silicon-bonded silicon carbide with tailored pore structure was prepared from silicon carbide, silicon, carbon, and boron powders as starting materials. Three different kinds of silicon particle sizes were used as pore formers, namely, fine (2.6 µm), intermediate (12.9 µm) and coarse (169.8 µm) while sintering…
Magnetic refrigeration technology needs further development not just by the improvement of magnetocaloric properties but also the optimization of the cooling system design. One of the important problems in the cooling system design is the geometry of regenerator for the efficient heat transfer between magnetic materia…
Novel in-situ reduction approach was applied for the synthesis of palladium nanoparticles in the pores of mesoporous silica materials with grafted siliconhydride groups. Matrices possessing different structural properties (MCM-41, SBA-15 and Silochrom) were used. Samples were studied by nitrogen adsorption-desorption…