1-Hexadecanethiol self-assembled monolayers (HDT SAMs) on Au(111) were used as a molecular resist to fabricate nanosized patterns by electrochemical reductive partial desorption for subsequent electrodeposition of PbS from the same solution simultaneously. The influences of potential steps of variable pulse width and amplitude on the size and the number of patterns were investigated. The kinetics of pattern formation by reductive desorption appears to be instantaneous according to chronoamperometric and morphological investigations. PbS structures were deposited electrochemically into the patterns on HDT SAMs by a combined electrochemical technique, based on the codeposition from the same saturated PbS solution at the underpotential deposition of Pb and S. Scanning tunneling microscopy measurements showed that all of the PbS deposits were disk shaped and uniformly distributed on Au(111) surfaces. Preliminary results indicated that the diameter and the density of PbS deposits can be controlled by controlling the pulse width and amplitude of potential applied at the reductive removal stage of HDT SAMs and the deposition time during the electrochemical deposition step.

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Silver nanodal was synthesized on orthodontic braces using silver nitrate salts as an electrochemical method. The synthesized Ag nanobranch were characterized by UV-visible spectroscopy (UV-vis), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD). Antibacterial microbial performance of Lactobacillus salivarius analyzed with electrochemically synthesized silver nanobranch on orthodontic brackets. The specific antibacterial properties of all the composites showed specific antibacterial effects or antiadherence, independently of the amount of silver nanobranch deposited, likely due to the differences in the bacterial cell wall structures. As a result, the brackets, which are very important for orthodontics, showed a good antibacterial performance with the nanostructures obtained by electrochemically coated with Ag, which is known to have antibacterial properties.

This work examines the effect of gold nanoparticle (Au NP)- graphene oxide (GO) on the adsorption of dibenzothiophene (DBT) compounds. Au NP-GO were also used as an absorbent to produce nanoscale samples of DBT selfassembled monolayers (SAMs) on Au NP-GO. The influences of DBT adsorption on the size and the time of patterns were investigated. Atomic force microscopy (AFM) and Transmission electron microscopy (TEM) measurements showed that all of the uniformly distributed on Au NP- GO preliminary results indicated that the diameter and the density of DBT adsorptive can be controlled by controlling concentration of GO and Au NP and adsorption time during DBT the stage of SAMs. Photocatalytic oxidation of DBT was studied over Au NPs incorporated DBT Au NP-GO- DBT catalyst under UV radiation.

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