ArticleScience advances2025
Scattering near-field optical microscopy at 1-nm resolution using ultralow tip oscillation amplitudes.
Article in Science advances, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Thermodynamics and Kinetics of Two-Dimensional HNano letters · 2026Article
- Time-Resolved SNOM via Phase-Domain Sampling.Nanophotonics (Berlin, Germany) · 2026Article
- Infrared Near-Field Microscopy as a Platform for Nanoscale Biomedical Spectroscopy and Imaging.ACS applied materials & interfaces · 2026Review
- Compressing Few-Cycle Optical Near Fields in the Tip-Sample Junction of a Scanning Probe Microscope.Nano letters · 2026Article
- Atomic-Scale Optical Microscopy with Continuous-Wave Mid-Infrared Radiation.Nano letters · 2026Article
- Review of the Current State of Optical Characterization and Design of Electronic States in Plasmonic Materials-From Noble Metals to Silverene and Goldene.Nanomaterials (Basel, Switzerland) · 2025Review
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Authors and funding
7 authors.
Funding
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Abstract
Scattering-type scanning near-field optical microscopy (s-SNOM) allows for the observation of the optical response of material surfaces with a resolution far below the diffraction limit. Based on amplitude-modulation atomic force microscopy (AFM) with typical tapping amplitudes of tens of nanometers, a spatial resolution of 10 to 100 nm is routinely achieved in s-SNOM. However, optical imaging and spectroscopy of atomic-scale structures remain a substantial challenge. Here, we developed ultralow tip oscillation amplitude s-SNOM (ULA-SNOM), where the ultraconfined field localized at a 1-nm-scale gap between a plasmonic tip and sample is combined with frequency-modulation (noncontact) AFM in a stable cryogenic ultrahigh vacuum environment. Using a silver tip under visible laser illumination with a constant 1-nm amplitude oscillation, we obtain a material-contrast image of silicon islands on a silver surface with 1-nm lateral resolution, which surpasses the conventional limits of s-SNOM. ULA-SNOM paves the way for the acquisition of optical information from atomic-scale structures, such as single photo-active defects and molecules.
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Registered trials
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