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

The development of photonic integrated circuits would benefit from a widerselection of materials that can strongly-control near-infrared (NIR) light.Transition metal dichalcogenides (TMDs) have been explored extensively forvisible spectrum opto-electronics, but the NIR properties of these layeredmaterials have been less-studied. The measurement of optical constants is theforemost step to qualify TMDs for use in NIR photonics. Here we measure thecomplex optical constants for select sulfide TMDs (bulk crystals of MoS2, TiS2and ZrS2) via spectroscopic ellipsometry in the visible-to-NIR range. ThroughMueller matrix measurements and generalized ellipsometry, we explicitly measurethe direction of the ordinary optical axis. We support our measurements withdensity functional theory (DFT) calculations, which agree with our measurementsand predict giant birefringence. We further propose that TMDs could find use asphotonic phase-change materials, by designing alloys that are thermodynamicallyadjacent to phase boundaries between competing crystal structures, to realizemartensitic (i.e. displacive, order-order) switching.

Near-infrared optical properties and proposed phase-change usefulness of transition metal disulfides