Title of Document: ASSEMBLY OF SILVER NANOCUBE CLUSTERS AND TUNING OF SURFACE PLASMON RESONANCES FOR SURFACEENHANCED RAMAN SCATTERING Seung Yong Lee, Doctor of Philosophy, 2012 Directed By: Professor Oded Rabin, Department of Materials Science and Engineering To prepare surface-enhanced Raman scattering (SERS) substrate with metal nanoparticle clusters, various deposition methods were used: (1)...

Laser cladding (LC) is a laser-based surface modification technology that has been widely adopted for the development of thin layers operate under harsh conditions. Corrosion contributes to approximately 50% oil and refinery equipment failures. These major risks require sophisticated methods improve performance. LC promotes generation superior properties on substrate surface, which improves ser...

Supported titanium dioxide (TiO2) was investigated for potential application in photocatalytic degradation of dye acid Orange 7 textile wastewater. Two commercial powder photocatalysts, Degussa (P25) and Precheza (AV01), were immobilized on stainless steel plates dimensions (75 mm × 25 mm) through Electrophoretic Deposition Process (EPD) from aqueous colloidal suspensions n-TiO2, c=10 g.L-1 pro...

Graphitized multiwalled CNTs (carbon nanotubes) were purchased from ECHO Chemical Co. Ltd. (Taiwan) with an external diameter of 2040 nm and a length of 0.5200 m. The raw CNT powder was etched in 15 M boiling nitric acid solution for 1h. The CNTs were then washed several times with de-ionized water until the pH value of the solution became neutral. Nickel hydroxide nanonets were grown on the...

Hydroxyapatite (HAp) can be applied as a bone implant material. HAp was composited with chitosan and polyvinyl alcohol (PVA) coated to Ti6Al4V improve its biocompatibility. The composite HAp-chitosan-PVA anodized unanodized Ti6Al4V. Modification of the surface by anodizing done using 20 V voltage. metal alloy electrophoretic deposition (EPD) method voltage 80 V. composites in nanotubes non-nano...

This paper describes a promising electrophoretic deposition (EPD) approach for developing composite coatings based on chitosan with the additional components of hydroxyapatite, graphene, and gentamicin titanium substrate. Bioactive properties were investigated in vitro by immersing simulated body fluid (SBF) at 37 °C. The newly formed biomimetic layer top deposited chitosan-based Ti was confirm...

Sucker rods are a key element in certain oil-extraction processes as they link the motor group on surface with pumps located downhole. During transport from production site toward extraction well, these components prone to corrosion. A hydrophobic carbon nanotube (CNT) coating, deposited via electrophoretic deposition (EPD), is proposed protective layer, shielding harsh environmental conditions...

Magnesium (Mg) and its biocompatible alloys are used as biodegradable materials for temporary implant applications. However, the fast electrochemical reactions in physiological environment can lead to premature failure damage surrounding tissues. Here, we report on nanoparticle-modified biopolymer composite coatings processed using alternating current electrophoretic deposition (AC-EPD) control...

Hierarchically mesoporous CuO/carbon nanofiber coaxial shell-core nanowires (CuO/CNF) as anodes for lithium ion batteries were prepared by coating the Cu2(NO3)(OH)3 on the surface of conductive and elastic CNF via electrophoretic deposition (EPD), followed by thermal treatment in air. The CuO shell stacked with nanoparticles grows radially toward the CNF core, which forms hierarchically mesopor...