Current Nanoscience - Volume 6, Issue 5, 2010

Curcumin is a natural anti-cancer compound utilized on a wide variety of human cancer cell lines and animal carcinogenesis models. However, its clinical application has been limited for its minimal systemic bioavailability. Nanoparticle-based drug delivery approaches have the potential for rendering hydrophobic molecules such as curcumin dispersible in aqueous media, thus overtaking the limits of its poor solubility. In this p Read More

Ag2Se/Se core/shell heterostructure nanoparticles (NPs) have been successfully synthesized by using silver nitrate (AgNO3) along with sodium selenosulfate (Na2SeSO3) as Se source in the presence of bovine serum albumen (BSA) as a foaming and stabilizing agent. The entire process was carried out at ambient pressure in aqueous phase at room temperature (RT). A possible mechanism to interpret the formation of the co Read More

The field of nanotechnology spans the synthesis of nanoscale matters, understanding/utilizing their exotic physicochemical and optoelectronic properties, and organization of nanoscale structures into predefined superstructures. Over the past decade, researchers in various fields of chemistry have been studying novel methods through which the morphology and the dimensions of inorganic materials can be controlle Read More

Drug eluting stents (DESs) have considerably reduced the occurrence of restenosis followed by balloon angioplasty. But the recent concerns of late stent thrombosis have rekindled an interest in developing an improved stent. A multidisciplinary approach of nanotechnology and biotechnology is the next frontier for this. This presents a comprehensive overview of the evolving nanobiotechnological approaches for biomedical impl Read More

In this study, we first report the selective synthesis of TiO2 nanorods of pure rutile, anatase and brookite TiO2 by the hydrothermal treatment of precursor titanate nanosheets. The synthesized TiO2 nanorods exhibit highly crystalline structure with different phases and morphologies. The experimental results indicate that morphologies of products depended significantly on the pH values of the reaction process. Following t Read More

Thermo, pH and magnetic field responsive core-shell particles of poly(acrylonitrile-co-N-isopropylacrylamide (p(AN-c- NIPAM)) were synthesized by microemulsion polymerization. Fe3O4 nanomagnetic particles were encapsulated inside core-shell polymeric particles during the polymerization and simultaneous crosslinking reaction of AN and NIPAM using ethylene glycol dimethacrylate (EGDMA) as a crosslinker and ammonium Read More

The carrier statistics in carbon nanotubes (CNTs) with nonparabolic energy spectrum is studied in order to predict the ultimate (intrinsic) drift velocity as a function of temperature, concentration, and chirality. The extremely high mobilities in CNTs do not necessarily lead to higher saturation velocity that is limited to the intrinsic velocity calculated using Arora's formalism [V. K. Arora, Current Nanoscience 5, 227(2009)]. The ba Read More

This study presents a simple yet effective hydrothermal route for selective generation of (Gd1-xEux)2O3 (x=0.03-0.13) redphosphor nanorods and nanotubes. Detailed characterizations of the products were achieved by combined means of XRD, FT-IR, TGA/DSC, BET, FE-SEM, HR-TEM, PL/PLE, fluorescence decay analysis, and transient techniques. The precursors are of hexagonal (Gd1-xEux)(OH)3, whose morphology (nanotube Read More

In this paper, we explore the electromechanical, optical, and luminescent properties of aluminum doped zinc oxide (ZnO) nanorods. The design of aqueous solution growth ZnO nanorods with an aluminum doped zinc oxide nanostructure is discussed, and electrical, optoelectronic, and mechanical properties of the obtained nanorods are described. The results show that the dopant concentration affects nanorod growth Read More

A novel one-step chemical reduction method is developed to fabricate nanofluids with very tiny spherical copper nanoparticles. Their chemical and colloidal stability is studied by adjusting their pH value with citric acid. Their thermal conductivity is also measured by the transient hot-wire method. The particle size can be varied from 6.4 nm to 2.9 nm by changing the surfactant concentration. The thermal conductivity data show th Read More

Polyvinylidene fluoride (PVDF) nanocomposites with multiwalled carbon nanotubes (MWNTs), functionalized carbon nanotubes (FMWNTs) and nanofibers (CNFs) were fabricated via the solution processing route. The effect of temperature on the electrical conduction of PVDF-CNF, PVDF-MWNT, and PVDF-FMWNT nanocomposites was studied. The results showed that the DC conductivity of such nanocomposites at ambient Read More

Gas sensor technology has been developed remarkably in recent years due to its wide applications in modern society. To meet the demand of low-level detection, gas sensor is still required to minimize the size in order to match the uses in micro-/nano- devices. This article reviews the development of nano SnO2 gas sensors to H2, CO, NO2, and ethanol gas/vapour. The emphasis has been put upon the material prepara Read More

The potential application of nano-/microcrystals-based materials depends not just on the size, compositions and surface chemistry of the crystals, but also on their special morphologies and arrangements. Therefore, developing straightforward and controllable methods for self-assembly of nanostructures in 1 dimension and higher dimensions has attracted considerable attention. In this paper, cadmium sulfide 3 dimensional Read More

Electro-centrifuge spinning is a novel, innovative, high-performance, and simple method to produce polymeric nanofibers based on using electrical and centrifugal forces. In this paper, first the electro-centrifuge method is presented and then an experiment is conducted to explore the range of centrifugal speed for the production of polyacrylonitrile (PAN) polymer nanofibers at different concentrations and voltages. Finally, the ef Read More

Improving the electrochemical stability of manganese oxide/multiwalled carbon nanotubes (MnO2/MWCNTs) nanocomposites is of great importance to many electrochemical supercapacitor applications. In this study, the electrochemical properties of MnO2 filled inside the cavity of MWCNTs were investigated for the first time. The prepared nanocomposite was characterized by means of X-ray photoelectron spectroscopy (XPS), X-r Read More