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Tip-Enhanced Raman Spectroscopy Provides 1-nm Resolution

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BERLIN, Sept. 6, 2019 — Tip-enhanced resonance Raman spectroscopy (TERRS) has been demonstrated by a research team at Fritz-Haber Institute. The results suggest that TERRS could offer a new approach for the atomic-scale optical characterization of local electronic states. The researchers demonstrated TERRS on ultrathin zinc oxide layers epitaxially grown on a Ag(111) surface in which both physical and chemical enhancement mechanisms were operative. The underlying process was examined by modifying the localized surface plasmon resonance in a scanning tunneling microscope junction and recording...Read full article

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    Published: September 2019
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    raman spectroscopy
    Raman spectroscopy is a technique used in analytical chemistry and physics to study vibrational, rotational, and other low-frequency modes in a system. Named after the Indian physicist Sir C.V. Raman who discovered the phenomenon in 1928, Raman spectroscopy provides information about molecular vibrations by measuring the inelastic scattering of monochromatic light. Here is a breakdown of the process: Incident light: A monochromatic (single wavelength) light, usually from a laser, is...
    Research & TechnologyeducationEuropeFritz Haber InstituteMax Planck SocietyLight SourcesMaterialsOpticsMicroscopyspectroscopyTest & MeasurementnanoRaman spectroscopyRaman scatteringscanning tunneling spectroscopytip-enhanced resonance Raman spectroscopy

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