Publications Details

Mass-Transport-Limited Electrodeposition of High-Surface-Area Coatings for Surface Acoustic Wave Sensor Technology

Ricco, A.J.; Staton, A.W.; Yelton, W.G.

The sensitivity of surface acoustic wave (SAW) sensors has been enhanced by increasing the active surface area of these devices, Electrodepositions of Ni, Pd, and Pt in a mass-transport-limited mode with trace foreign metals yield highly dendritic crystal structures of uniform macroscopic thickness. The concentration of metal ions, supporting electrolyte, agitation, and additives greatly impact the crystal morphology of the deposit. This methodology can be used simply and economically to provide high-area films in selective regions.