|About this Abstract
||Materials Science & Technology 2012
||Nanomaterials and Nanodevices
||Processing and Characterization of Antibacterial Silver Nanoparticle Coatings Deposited by Vertical Colloidal Deposition
||Curtis Larimer, Michael Melia, Andrew Beck, Ian Nettleship
|On-Site Speaker (Planned)
The prevalence of pathogenic bacteria in the human environment has necessitated the development of antibacterial coatings for surfaces. In particular, heavy metal nanoparticles like silver and copper have drawn much interest. Nanoparticles in colloidal suspension can be easily deposited at room temperature and pressure by vertical colloidal deposition (VCD). In this study, silver nanoparticles were deposited by VCD on a planar substrate. The morphology of the resulting coating was controlled by varying the speed of deposition and the concentration of the nanoparticle suspension. The morphology of the coatings was characteristic of a stick-slip mechanism and resulted in lines of deposited particles. The width and separation of deposition lines was related to the controlled deposition variables. In addition, the areal coverage of silver was analyzed for each experimental condition and this was compared to predicted values calculated from VCD theory. The significant deviations from the theoretical predictions will be explained.