THz/IR-spectroscopy and nano-FTIR

The IR-spectroscopy and microscopy instrument IRIS can be used for investigation of any type of materials down to 20 nm spatial resolution in the mid- and far-IR spectral ranges. Possible applications span from investigation of biological systems (cells, tissues, fibres, interactions of proteins etc.), to novel functional (high-Tc superconductors, batteries, polymers, nanoplastics etc.) and cultural heritage (works of art, artifacts etc.) materials.

The large acceptance beamline offering broadband infrared radiation from the THz to the NIR is equipped with several end-stations:

IRIS (radiation passport required)

• Infrared spectroscopy (Bruker Vertex 70v)
• Single-shot time resolved infrared spectroscopy (Dispersive Fery prism spectrometer)
• Infrared nanospectroscopy and imaging  (attocube neaScope scattering type near-field optical microscope)

and IRIS 2

• Infrared microspectroscopy (Bruker Hyperion 3000 + Vertex 80 )

  Selected Applications:

• Vibrational, structural electronic properties of liquids, solids, surfaces and thin layers
• Microscopic investigation of structured materials, e.g. biological systems (cells, tissues, fibres, interactions of proteins), with diffraction limited spatial resolution (ca. 5-10 µm)
• Nanospectroscopy and imaging of composite materials beyond the diffraction limit with spatial resolution down to ca. 20 nm
• Single-shot time-resolved IR- spectroscopy, e.g. to investigate irreversible the structural and functional interactions of proteins with down to µs time resolution

IRIS Beamline and Endstations

Methods

IR Spectroscopy, THz spectroscopy, Time-resolved absorption, IR Microscopy, Mid Infrared near-field Microscopy, THz-near-field Microscopy, Polarimetry, Reflectometry, Time-resolved reflection

Remote access

depends on experiment - please discuss with Instrument Scientist

IRIS and IRIS 2 instrument options

More Details on Methods available:

IR Spectroscopy at macro- and micro-scales:

• THz to mid-IR
• Transmission
• Reflection
• ATR (attenuated total reflection)
• Polarimetry
• Single-shot time resolved down to 30 µs

IR Nanospectroscopy and Imaging (down to 20 nm):

• Far to Mid-IR
• AFM based tip-enhanced IR scattering
• IR phase and amplitude spectroscopy