(a) Setup for nanorod deposition onto a cylindrical objects and (b) sketch of the resulting nanorod∕fiber structure.
Aligned Ag nanorods formed on an optical fiber (a) and (b), (c), (d) SEM pictures taken at three different portions on the fiber as indicated by (a). The diameter and separation of the nanorods are and , respectively.
Al, Ni, Si, and (from left to right) nanorod coated fibers. The fibers have different colors (a) and the detailed morphologies of (b) Al, (c) Ni, (d) Si, and (e) nanorod coated fibers.
(a) Schematic showing how to open a window in an optical fiber, (b) nanorods form on the window with length shadowed by the buffer layer, (c) a “window” on the fiber after deposition of Ag nanorods, and (d) SEM picture of the Ag nanorods coated on it. The diameter and separation of the nanorods are and , respectively.
Deposition arrangement for tapered rods (a) , (b) , a substrate mask is necessary to shadow the vapor from arriving at the other side of the tapered surface, and (c) shows a sketch of nanorods form on the surface.
Optical micrograph of the micropipette tip used in our experiment. The tip has doubly tapered angles.
Ag nanorods deposited onto micropipette tip: (a) micropipette tip mounted on a pin vise after deposition, (b) zoom into the tip, and (c) SEM of the nanorod array. The diameter of the rod is , and the rod-rod separation is .
(a) Deposition procedure for multilayered film∕nanorod structures on cylindrical objects: at position 1, the axis of the fiber is horizontal and a layer of thin film can be deposited on the surface; at position 2, after thin film deposition the fiber is tilted slightly off the vapor direction and nanorods can be deposited. (b) A sketch of the nanorod∕film multilayer structure.
(a) Cross section of the optical fiber, (b) SEM picture taken at the edge of the fiber cross section showing layers of film and rods, and (c) SEM on the side wall of the optical fiber showing the top-view nanorod structure.
SEM picture of the wafer multilayer structure. The arrows point to several typical layer–layer junctions.
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