IRIS 1
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:
- a Fourier-transform infrared (FT-IR) spectrometer (Bruker Vertex 70v)
- a Single-shot time resolved spectrometer (Dispersive Fery prism)
- a Nanospectrometer (Attocube neaScope scattering type near-field optical microscope)
In addition, a free beam port is applicable for breadboarding experiments.
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
Methods
IR Microscopy, Mid Infrared near-field Microscopy, THz-near-field Microscopy, IR Spectroscopy, THz spectroscopy, Time-resolved absorption, Polarimetry, Reflectometry, Time-resolved reflection
Remote access
depends on experiment - please discuss with Instrument Scientist
| Instrument data | |
|---|---|
| Phone (~49 30 8062-) | 14716 |
| Beam availability | 24h/d |
| Source | D11 (Dipole) |
| Monochromator | Fourier Transform Spectrometers |
| Energy range (at experiment) | tba |
| Energy resolution | 0.125 1/cm |
| Flux | -- |
| Polarisation | linearly horizontal/vertical |
| Focus size (hor. x vert.) | diffraction limited |
| Temperature range | 1.6K - 500K |
| Pressure range | For details contact the scientist in charge. |
| Detector | Bolometer, DTGS, MCT, mid-IR FPA, InSb |
| Manipulators | Cryostat |
| Sample holder compatibility | For details contact the scientist in charge. |
| Additional equipment | |
| Additional information | Further details: beamline IRIS |
More Details on Methods available:
IR Spectroscopy:
- THz to mid-IR
- Transmission
- Reflection
- ATR (attenuated total reflection)
- Polarimetry
- Single-shot time resolved down to 5 µs
IR Nanospectroscopy and Imaging (down to 20 nm):
- Far to Mid-IR
- AFM based tip-enhanced IR scattering
- IR phase and amplitude spectroscopy