AVS 59th Annual International Symposium and Exhibition
    Thin Film Thursday Sessions
       Session TF+EM+SE+NS-ThM

Paper TF+EM+SE+NS-ThM6
Ag Nanoparticles Supported by (111) Facets on Biaxial CaF2 Nanoblades

Thursday, November 1, 2012, 9:40 am, Room 10

Session: Nanostructuring Thin Films
Presenter: D. Ye, Virginia Commonwealth University
Authors: M. Auer, Virginia Commonwealth University
D. Ye, Virginia Commonwealth University
Correspondent: Click to Email
Silver nanoparticles of different diameters were grown in an effort to study methods of preferentially orienting the geometry of metal nanoparticles. Arrays of calcium fluoride nanorods were grown on silicon substrates using oblique angle deposition at 75° incident angle. A method was then developed to grow silver nanoparticles exclusively on the (111) facet of the calcium fluoride tips. Cross sectional scanning electron microscopy and transmission electron microscopy imaging was used to verify that the nanoparticles adhered exclusively to the desired facet of the tip. Using selected area diffraction and dark field in the TEM, it was shown that the nanoparticles did grow at a [111] orientation at the interface between them and the calcium fluoride rods. Different thicknesses and diameters of nanoparticles were then grown to determine what an ideal size was to achieve the most [111] orientation of the nanoparticles.