In recent days Zinc oxide (ZnO) attracted much interest due to its versatibility and size dependent opto-electronic properties. ZnO flake structures have been hydrothermally synthesized in the reaction of aqueous solution of cetyl trimethyl ammonium bromide (CTAB) and NaOH at 373.15 K. It was found that, the volume of added ammonia, surfactant (CTAB), and mixed solvent play crucial roles in mor...

In the present paper, we show tungsten diselenide (WSe2) devices that can be tuned to operate as n-type and p-type field-effect transistors (FETs) as well as band-to-band tunnel transistors on the same flake. Source, channel, and drain areas of the WSe2 flake are adjusted, using buried triple-gate substrates with three independently controllable gates. The device characteristics found in the tu...

Objective—To investigate possible neurotoxic eVects in groups of aluminium pot room and foundry workers, aluminium welders, and a small group of workers exposed to aluminium in the production of flake powder. Methods—Exposure to aluminium was evaluated with aluminium concentrations in blood and urine as well as a questionnaire. The groups exposed to aluminium were compared with a group of mild ...

Whole-grain oats have been identified as a type of food that blunts blood glucose increase after a meal. However, processing of oats changes the physical characteristics of the grain, which may influence human glycaemic response. Therefore, the effect of different processes on acute postprandial glycaemic response, quantified using glycaemic index (GI) measurements, was investigated in a system...

Abstract A study of the effect 2.5 MeV 4 He 2+ ion irradiation on optical, electrical, morphological and structural properties ZnO thin films is presented. Polycrystalline zinc oxide were deposited soda lime glass substrates using spray pyrolysis technique. During process, substrates’ surfaces kept at 400, 450 500 °C. The samples analyzed by different techniques optical results showed a red shi...

The thermoelectric efficiency in different materials is measured by the quantity ZT, known as figure of merit. This quantity in bulk materials have values not higher than the unit, but in nanostructured systems can be improvement by different mechanism, such as quantum size effects and the reduction of the thermal conductance, reaching values greater than 1 [1]. In this work, we propose a two d...