A novel flexible CO gas sensor based on polyvinyl alcohol/yttrium oxide nanocomposite films.

Polyvinyl alcohol/yttrium oxide (PVA/YO) nanocomposite films with five different weight ratios of PVA and YO nanoparticles (NPs) were prepared using a simple solution casting method. The prepared polymer nanocomposite (PNC) films were examined using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). FTIR spectra exhibited a strong interaction between the PVA matrix and YO NPs.

ZnO Films Incorporation Study on Macroporous Silicon Structure.

In the present work, we developed hybrid nanostructures based on ZnO films deposited on macroporous silicon substrates using the sol-gel spin coating and ultrasonic spray pyrolysis (USP) techniques. The changes in the growth of ZnO films on macroporous silicon were studied using a UV-visible spectrometer, an X-ray diffractometer (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). XRD analysis revealed the beneficial influence of macroporous silicon on the structural properties of ZnO films.

Relationship between dental fluorosis and I.Q of school going children aged 10-12 years in and around Nalgonda district-A cross-sectional study.

Background: The fluoride ion toxicity has been associated with both dental fluorosis and neurotoxicity; dental fluorosis has tended to be considered with respect to tooth appearance and function rather than as a marker for neurotoxicity.

Aims And Objectives: This study assessed the intelligence quotient (IQ) of school-going children aged 10-12 years in villages of Nalgonda district with different fluoride levels.

Materials And Methods: A cross-sectional study was conducted among the permanent residents of Nalgonda district of Telangana state, India.

Undoped and Nickel-Doped Zinc Oxide Thin Films Deposited by Dip Coating and Ultrasonic Spray Pyrolysis Methods for Propane and Carbon Monoxide Sensing Applications.

Undoped and nickel-doped zinc oxide thin films were deposited on sodalime glass substrates by utilizing dip coating and ultrasonic spray pyrolysis deposition techniques. In both cases zinc acetate and nickel acetylacetonate were used as zinc precursor and nickel dopant source, respectively. XRD analysis confirms the ZnO wurtzite structure with (002) as the preferential orientation.

Nitrogen-Doped Carbon Dots Induced Enhancement in CO Sensing Response From ZnO-Porous Silicon Hybrid Structure.

In this study, we report a simple method for the fabrication of carbon dots sensitized zinc oxide-porous silicon (ZnO-pSi) hybrid structures for carbon dioxide (CO) sensing. A micro-/nanostructured layer of ZnO is formed over electrochemically prepared pSi substrates using a simple chemical precipitation method. The hybrid structure was structurally and optically characterized using scanning electron microscopy, X-ray diffraction, fluorescence, and cathodoluminescence after the incorporation of hydrothermally prepared nitrogen-doped carbon dots (NCDs) by drop casting.