When light interacts with a metal nanoparticle (NP), its conduction electrons can be driven
by the incident electric field in collective oscillations known as localized surface plasmon …

Coinage metals, such as Au, Ag, and Cu, have been important materials throughout
history.(1) Although in ancient cultures they were admired primarily for their ability to reflect …

Time-resolved electron microscopy aims to track nanoscale excitations and dynamic states
of matter at a temporal resolution ultimately reaching the attosecond regime. Periodically …

Near-field microscopy discloses a peculiar potential to explore novel quantum state of matter
at the nanoscale, providing an intriguing playground to investigate, locally, carrier dynamics …

Optical activity and circular dichroism are fascinating physical phenomena originating from
the interaction of light with chiral molecules or other nano objects lacking mirror symmetries …

Developments of optical detection and spectroscopy methods for single nano-objects are
key advances for applications and fundamental understanding of the novel properties …

Near-field infrared spectroscopy by elastic scattering of light from a probe tip resolves optical
contrasts in materials at dramatically subwavelength scales across a broad energy range …

Photonic metasurfaces offer exceptional control over light at the nanoscale, facilitating
applications spanning from biosensing, and nonlinear optics to photocatalysis. Many …

Scattering-type scanning near-field optical microscopy (s-SNOM) and Fourier transform
infrared nanospectroscopy (nano-FTIR) are emerging tools for physical and chemical …

Theory predicts a distinct spectral shift between the near-and far-field optical response of
plasmonic antennas. Here we combine near-field optical microscopy and far-field …