Deposition of gold metal on a tilted fiber Bragg grating (TFBG) demonstrates the utility of this optical fiber as a sensor for the conditions at the fiber's surface, including the continuity of a deposited metal film. Two precursors for the deposition of metallic gold are contrasted: gold(I) N'N'-dimethyl N,N"- diisopropylguanidinate (1) and gold(I) tert-butyl-imino-2,2- dimethylpyrrolidinate (2). Characterization of the deposition by optical fiber spectroscopy highlights the difference in thermal stability and growth rate of these two compounds. Compound 1 has a tremendous growth rate (220 nm/min) but is very thermally unstable, while 2 is much more thermally stable, and shows a lower growth rate of 1 nm/min.

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Persistent URL dx.doi.org/10.1149/06907.0171ecst
Conference Symposium on Atomic Layer Deposition Applications 11 - 228th ECS Meeting
Citation
Mandia, D.J., Zhou, W., Wells, A.P., Albert, J, & Barry, S.T. (2015). Metallic nanocoatings on optical fibers as a sensor platform. Presented at the Symposium on Atomic Layer Deposition Applications 11 - 228th ECS Meeting. doi:10.1149/06907.0171ecst