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. 2015 Apr 29;5:9805. doi: 10.1038/srep09805

Figure 5. PVD-based manufacturing of wire-design RTS prototype.

Figure 5

(a) Two-layer RTS microwire. The RTS (80 μm diameter) was built with an Ethilon nylon 6–0 suture used as a substrate and coated with a Ti/Au layer. (b) Optical microscope (OM) image of the Ethilon nylon 6–0 suture used as a substrate to build the RTS microwire. The steep transition between the two RTS layers — necessary for the maximizing the mismatched impedance and the scattering within the RTS fiber (see Fig. 1b) — is clearly visible. (c) OM image of the interface between the two RTS layers. (d) OM image of microwire fully coated with 100/150 nm of Ti/Au. (e) Scanning Electron Microscope (SEM) image of the RTS microwire. (f) SEM view, with increased magnification, of the Au coating of the RTS fiber showing the characteristic fibrous surface of the Ethilon nylon substrate.