Conventional optics in the radio frequency (rf) through far-infrared (FIR) regime cannot
resolve microscopic features since resolution in the far field is limited by wavelength. With …

Near-field optics uniquely addresses problems of x, y and z resolution by spatially confining
the effect of a light source to nanometric domains. The problems in using far-field optics …

We demonstrate Fourier transform infrared nanospectroscopy (nano-FTIR) based on a
scattering-type scanning near-field optical microscope (s-SNOM) equipped with a coherent …

We describe ultraresolution microscopy far beyond the classical Abbe diffraction limit of one
half wavelength (λ/2), and also beyond the practical limit (ca. λ/10) of aperture–based …

The authors present a detection technique for scattering-type near-field optical microscopy
capable of background interference elimination in the entire near-UV to far-IR spectral …

Fourier-transform infrared (FTIR) spectroscopy is a widely used analytical tool for chemical
identification of inorganic, organic and biomedical materials, as well as for exploring …

Infrared nanospectroscopy enables novel possibilities for chemical and structural analysis of
nanocomposites, biomaterials or optoelectronic devices. Here we introduce hyperspectral …

Nanometer-scale mapping of complex optical constants by scattering-type near-field
microscopy has been suffering from quantitative discrepancies between the theory and …

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

We report on the fabrication, characterization and application of a probe consisting of a
single gold nanoparticle for apertureless scanning near‐field optical microscopy. Particles …