Effect of substrate temperature on bismuth oxide thin films grown by pulsed laser deposition

International audienc

Wastewater assessment in Galatz city during 2015-2016

Due to the industrialization and urbanization a great quantity of wastewater is produced every day. It is important to monitor the wastewater quality and to determine if it is safe to discharge it in to the environment.In this study, wastewater quality in Galatz city, from Romania, was evaluated. The wastewater generally comes from domestic activities and from industry. We were monitored wastewater which enters in the treatment station of the city.In order to monitor the wastewater quality, some physical and chemical parameters were determined according to standard methods. The analyzed chemical parameters were: ammonium (mg/l), total nitrogen (mg/l), sulphides and hydrogen sulphide (mg/l), total phosphorus, total dispersed solids (TDS), total solids in suspension (TSS)(mg/l), chemical oxygen demand (COD)(mg O2/l) and pH. As physical parameters was studied only conductivity. These data were collected during February 2015–February 2016. The physico-chemical parameters were determinated each month during this period

BISMUTH OXIDE THIN FILMS DEPOSITED ON SILICON THROUGH PULSED LASER ABLATION, FOR INFRARED DETECTORS

International audienc

ZnO nanostructures grown on ITO coated glass substrate by hybrid microwave-assisted hydrothermal method

Over the last decades, zinc oxide nanostructures (NSs) have been studied due to outstanding chemical and physical properties, able to serve a plethora of applications. The growth of NSs on different substrates coated with ITO film allow their direct implementation in various micro-/nano-devices. The microwave-assisted hydrothermal method is a new hybrid approach used for synthesis of oxide NSs due to unique advantages in energy efficiency/high reaction rate and possibility of obtaining different morphologies with size and shape-controlled, which are relevant for some applications

Ultrathin Films of Silver by Magnetron Sputtering

The interest in ultrathin silver (Ag) films has increased due to their high surface plasmon resonance for coatings of only a few nm. Low roughness ultrathin films of 1 to 9 nm have been deposited on different substrates, such as polyethylene terephthalate (PET) and optical glass, using radio frequency (RF) magnetron sputtering. Films show good surface plasmon resonance up to 7 nm thickness, as revealed by the ultraviolet-visible (UV-Vis) spectra. The roughness of the films, investigated by Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM), is small, and one can conclude that depositions are smooth and homogeneous. The bandgap values decrease with film thickness. The refractive index of the films, calculated from ellipsometry measurements, leads to values of under 1 visible domain, with minima in the wavelength range of 400–600 nm. The results are useful for obtaining lower roughness ultrathin Ag films with good surface plasmon resonance for photonic applications

Ultrathin Films of Silver by Magnetron Sputtering

The interest in ultrathin silver (Ag) films has increased due to their high surface plasmon resonance for coatings of only a few nm. Low roughness ultrathin films of 1 to 9 nm have been deposited on different substrates, such as polyethylene terephthalate (PET) and optical glass, using radio frequency (RF) magnetron sputtering. Films show good surface plasmon resonance up to 7 nm thickness, as revealed by the ultraviolet-visible (UV-Vis) spectra. The roughness of the films, investigated by Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM), is small, and one can conclude that depositions are smooth and homogeneous. The bandgap values decrease with film thickness. The refractive index of the films, calculated from ellipsometry measurements, leads to values of under 1 visible domain, with minima in the wavelength range of 400–600 nm. The results are useful for obtaining lower roughness ultrathin Ag films with good surface plasmon resonance for photonic applications