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/

Zendy Plus

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

Zendy Tools

Zendy Open

Near-field optical microscopes with two independent tips for simultaneousexcitation and detection can be essential tools for studying localized opticalphenomena on the subwavelength scale. Here, we report on the implementation ofa fully automated and robust dual-tip scanning near-field optical microscope(SNOM), in which the excitation tip is stationary, while the detection tipautomatically scans the surrounding area. To monitor and control the distancebetween the two probes, mechanical interactions due to shear forces are used.We experimentally investigate suitable scan parameters and find that theautomated dual-tip SNOM can operate stably for a wide range of parameters. Todemonstrate the potential of the automated dual-tip SNOM, we characterize thepropagation of surface plasmon polaritons on a gold film for visible andnear-infrared wavelengths. The good agreement of the measurements withnumerical simulations verifies the capability of the dual-tip SNOM for thenear-field characterization of localized optical phenomena.

A fully automated dual-tip scanning near-field optical microscope for localized optical excitation and detection in the visible and near-infrared