The effects of zinc oxide nanoparticles (nano-ZnO) on the properties of voltage-dependent sodium, potassium currents and evoked action potentials were studied in acutely isolated rat hippocampal CA3 pyramidal neurons at postnatal ages of 10-14 days rats using the whole-cell patch-clamp technique. The results indicated that: (1) in the present of final concentration of 10(-4)g/ml nano-ZnO, the c...

Low-temperature aqueous solution deposition has been used for the first time to produce epitaxial ZnO layers on the semipolar (10 1 1) surface of bulk GaN substrates and LEDs. Although the ZnO films have single in-plane and out-of-plane orientations, which are nominally the same as those of the (10 1 1) GaN substrate, the ZnO lattice is observed to be slightly tilted with respect to that of the...

We experimentally show the viability of isolating and micropositioning ZnO-based nanostructures in an electrodynamic trap to investigate their intrinsic optical nature under atmospheric conditions. An electrospray technique is used to spray a dilute solution of ZnO tetrapods in methanol into an electrodynamic “endcap” trap. Subsequent tuning of trapping parameters, as the methanol evaporates, l...

The reduction of bulk mixed oxides of zinc and titanium of various compositions and Zn-Ti-0 crystalline phases was studied in a thermogravimetric apparatus in Hz-H,O-N, gas mixtures at 550-1050°C. Comparative reduction experiments with ZnO were also performed. In the absence of water vapor, activation energies of 24 and 37 kcal mol’ were obtained for ZnO and Zn-Ti-0. resnectivelv. The addition ...

BACKGROUND The mechanisms governing the correlation between exposure to ultrafine particles and the increased incidence of cardiovascular disease remain unknown. Ultrafine particles appear to cross the pulmonary epithelial barrier into the bloodstream, raising the possibility of direct contact with the vascular endothelium. OBJECTIVES Because endothelial inflammation is critical for the devel...

193 6 O On n t th he e l li in ne ea ar r a an nd d n no on nl li in ne ea ar r o op pt ti ic ca al l p pr ro op pe er rt ti ie es s o of f t th he er rm ma al ll ly y s st ta ab bl le e, , Z Zn nO O/ /P PS S-P PM MM MA A n na an no oc co om mp po os si it te e f fi il lm ms s 6.1 Introduction 6.2 Synthesis details 6.3 Structural characterization 6.4 Thermal analysis 6.5 Optical Studies 6.6 Non...

We present analytical and numerical results for models of electrodeposition of ZnO films with organic additives, with a special focus on the growth of hybrid films with eosin Y. First we propose a rate equation model which assumes that the additives form branches with an exposed part above the ZnO deposit. The branches grow with larger rate than the pure film, and it is assumed that the rate of...

We report on hybrid films based on ZnO/organic dye prepared by electrodeposition using tetrasulfonated copper phthalocyanines (TS-CuPc) and Eosin-Y (EoY). Both the morphology and porosity of hybrid ZnO films are highly dependent on the type of dyes used in the synthesis. High photosensitivity was observed for ZnO/EoY films, while a very weak photoresponse was obtained for ZnO/TS-CuPc films. Des...

Snowflake-like ZnO structures originating from self-assembled nanowires were prepared by a low-temperature aqueous solution method. The as-grown hierarchical ZnO structures were investigated by X-ray diffraction (XRD) and field-emission scanning electron microscopy (FESEM). The results showed that the snowflake-like ZnO structures were composed of high-aspect-ratio nanowires. Furthermore, gas-s...

Variable-aspect-ratio (length/diameter), one-dimensional (1-D) ZnO nanostructures (nanorods and nanowires) were prepared in alcohol/water solution by reacting a Zn2+ precursor with an organic weak base, tetramethylammonium hydroxide (Me4NOH). The effect of the experimental parameters (temperature, base concentration, reaction time, and water content) on nucleation, growth, and the final morphol...