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

T. Allsop*, R. Neal, V. Kundrat, C. Wang, C. Mou, P. Culverhouse, J. D. Ania-Castanon, K. Kalli, D. J. Webb

*Corresponding author for this work

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)195-198
Number of pages4
JournalOptics Letters
Volume44
Issue number2
Early online date30 Nov 2018
DOIs
Publication statusPublished - 2 Jan 2019

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antennas
germanium oxides
metals
strata
thin films
ultraviolet lasers
irradiance
ultraviolet radiation
germanium
optical fibers
gratings
dosage
fibers
silicon
interactions

Bibliographical note

© 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).

Cite this

Allsop, T. ; Neal, R. ; Kundrat, V. ; Wang, C. ; Mou, C. ; Culverhouse, P. ; Ania-Castanon, J. D. ; Kalli, K. ; Webb, D. J. / Low-dimensional nano-patterned surface fabricated by direct-write UV-chemically induced geometric inscription technique. In: Optics Letters. 2019 ; Vol. 44, No. 2. pp. 195-198.
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Allsop, T, Neal, R, Kundrat, V, Wang, C, Mou, C, Culverhouse, P, Ania-Castanon, JD, Kalli, K & Webb, DJ 2019, 'Low-dimensional nano-patterned surface fabricated by direct-write UV-chemically induced geometric inscription technique', Optics Letters, vol. 44, no. 2, pp. 195-198. https://doi.org/10.1364/OL.44.000195

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.; Webb, D. J.

In: Optics Letters, Vol. 44, No. 2, 02.01.2019, p. 195-198.

Research output: Contribution to journalArticle

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AU - Kalli, K.

AU - Webb, D. J.

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