English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

. Plasmonic waveguides have attracted much attention owingto the associated high field intensity at the metal–dielectric interface andtheir ability to confine the modes at the nanometer scale. At the same time,they suffer from relatively high propagation loss, which is due to thepresence of metal. Several alternative materials have been introduced toreplace noble metals, such as transparent conductive oxides (TCOs). Aparticularly popular TCO is indium tin oxide (ITO), which is compatible withstandard microelectromechanical systems (MEMS) technology. In this work, the feasibility of ITO as analternative plasmonic material is investigated for infrared absorption sensingapplications: we numerically design and optimize an ITO-basedplasmonic slot waveguide for a wavelength of 4.26 µm, which is the absorptionline of CO2. Our optimization is based on a figure of merit (FOM), whichis defined as the confinement factor divided by the imaginary part of the effective modeindex (i.e., the intrinsic damping of the mode). The obtained optimal FOM is3.2, which corresponds to 9 µm and 49 % for the propagation length(characterizing the intrinsic damping) and the confinement factor,respectively.

Numerical analysis of an infrared gas sensor utilizing an indium-tin-oxide-based plasmonic slot waveguide