Low-dimensional nano-patterned surface fabricated by direct-write UV-chemically induced geometric inscription technique

Allsop, T., Neal, R., Kundrat, V., Wang, C., Mou, C., Culverhouse, P., Ania-Castanon, J. D., Kalli, K. and Webb, D. J. (2019). Low-dimensional nano-patterned surface fabricated by direct-write UV-chemically induced geometric inscription technique. Optics Letters, 44 (2), pp. 195-198.

Abstract

We investigate a nano-patterning process which creates reproducible periodic surface topological features that range in size from ∼100 μm to ∼20 μm. Specifically, we have fabricated multi-layered thin films consisting of germanium/silicon strata on a planar substrate, with each layer having nanometers thickness. The material processing exploits focused 244 nm ultra-violet laser light and an opto-mechanical setup typically applied to the inscription of fiber gratings, and is based upon the well-known material compaction interaction of ultra-violet light with germanium oxides. We show this process can be extended to create arrays of metal nano-antennas by adding a metal overlay to the thin film. This results in arrays with dimensions that span nanometer- to centimeter-length scales. Also, each nano-antenna consists of “nano-blocks.” Experimental data are presented that show the UV irradiance dosage used to create these metal nanostructures on D-shaped optical fibers has a direct relationship to their transmission spectral characteristics as plasmonic devices.

Publication DOI: https://doi.org/10.1364/OL.44.000195
Divisions: Engineering & Applied Sciences > Institute of Photonics
Engineering & Applied Sciences > Electrical, electronic & power engineering
Additional Information: © 2019 Optical Society of America. Article listed as Open Access on journal website Funding: Engineering and Physical Sciences Research Council (EPSRC) (EP/J010391, EP/J010413); H2020 Marie Skłodowska-Curie Actions (MSCA) COFUND Action MULTIPLY (713694).
Uncontrolled Keywords: Atomic and Molecular Physics, and Optics
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.osa ... uri=ol-44-2-195 (Publisher URL)
Published Date: 2019-01-02
Authors: Allsop, T.
Neal, R.
Kundrat, V.
Wang, C.
Mou, C.
Culverhouse, P.
Ania-Castanon, J. D.
Kalli, K.
Webb, D. J. ( 0000-0002-5495-1296)

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