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Three-dimensional CoFe2O4 nanoflowers thin films have been deposited on stainless steel by low-cost chemical bath deposition process. The experimental design methodology has been applied to investigate the effect of the principal experimental parameters on the saturation magnetization. The Rechtschaffner design demonstrates that annealing temperature, deposition time and reactional medium temperature are the most influential parameters. Doehlert matrix has been used to predict the optimal condition of the saturation magnetization. XRD data confirm the formation of the desired CoFe2O4 phase. SEM analysis reveals the formation of three-dimensional nanoflowers like-morphology. The CV curve of 3D-CoFe2O4 nanoflowers thin film deviate from the perfect rectangular shape, demonstrate this pseudocapacitive characteristics. The specific capacitance was found to be 472 F g−1 at 5 mA s−1 scan rate. The VSM measurement demonstrate that the film exhibits a ferrimagnetic behavior, with easy magnetization axis along the plane of the films. The 3D-CoFe2O4 elaborated at the optimal conditions shows a maximum saturation magnetization of 0.44 T.

International audience; In this work, we combined a hierarchical nano-array effect of silicon nanowires (SiNWs) with a metallic surface of silver nanoparticles (AgNPs) to design a surface-enhanced Raman spectroscopy (SERS) scattering substrate for sensitive detection of Rhodamine 6G (R6G) which is a typical dye for fluorescence probes. The SiNWs were prepared by Metal-Assisted Chemical Etching (MACE) of n-Si (100) wafers. The Doehlert design methodology was used for planning the experiment and analyzing the experimental results. Thanks to this methodology, the R6G SERS response has been optimized by studying the effects of the silver nitrate concentration, silver nitrate and R6G immersion times and their interactions. The immersion time in R6G solution stands out as the most of influential factor on the SERS response.

In spite of the controversy about the chemical structure and formation mechanism of hydrogenotitanates nanotubes (HNTs) through a basic hydrothermal treatment of TiO2, HNTs are still the subject of...

ABSTRA ABSTRACT: The combined effects of mica (0% to 1.2% (w/w)), car The combined effects of mica (0% to 1.2% (w/w)), car The combined effects of mica (0% to 1.2% (w/w)), car The combined effects of mica (0% to 1.2% (w/w)), car The combined effects of mica (0% to 1.2% (w/w)), carnauba wax (0% to 0.8% (w/w)), gly nauba wax (0% to 0.8% (w/w)), gly nauba wax (0% to 0.8% (w/w)), gly nauba wax (0% to 0.8% (w/w)), gly nauba wax (0% to 0.8% (w/w)), glycerol (0% to ol (0% to ol (0% to ol (0% to ol (0% to 6% (w/w)), and sodium caseinate (10% to 13% (w/w)) concentrations on water vapor barrier and mechanical 6% (w/w)), and sodium caseinate (10% to 13% (w/w)) concentrations on water vapor barrier and mechanical 6% (w/w)), and sodium caseinate (10% to 13% (w/w)) concentrations on water vapor barrier and mechanical 6% (w/w)), and sodium caseinate (10% to 13% (w/w)) concentrations on water vapor barrier and mechanical 6% (w/w)), and sodium caseinate (10% to 13% (w/w)) concentrations on water vapor barrier and mechanical properties of coated paper were studied. A Doehlert matrice was used to investigate the main effects of these properties of coated paper were studied. A Doehlert matrice was used to investigate the main effects of these properties of coated paper were studied. A Doehlert matrice was used to investigate the main effects of these properties of coated paper were studied. A Doehlert matrice was used to investigate the main effects of these properties of coated paper were studied. A Doehlert matrice was used to investigate the main effects of these factors and their differ factors and their differ factors and their differ factors and their differ factors and their different inter ent inter ent inter ent inter ent interactions. . . . . The r The r The r The r The results w esults w esults w esults w esults wer er er ere analyzed using the r ed using the r ed using the r ed using the r ed using the response sur esponse sur esponse sur esponse sur esponse surface methodology face methodology face methodology face methodology face methodology. Carnauba wax and glycerol concentrations were the most important parameters affecting water vapor perme- Carnauba wax and glycerol concentrations were the most important parameters affecting water vapor perme- Carnauba wax and glycerol concentrations were the most important parameters affecting water vapor perme- Carnauba wax and glycerol concentrations were the most important parameters affecting water vapor perme- Carnauba wax and glycerol concentrations were the most important parameters affecting water vapor perme- ability ( ability ( ability ( ability ( ability (WVP). G