Servizio Comunitario di Informazione in materia di Ricerca e Sviluppo - CORDIS

Spectral database of materials and plasticware used in biological laboratories suitable for THz application

Following the workplan, we have performed systematic spectroscopic investigations on a variety of material to be used by the various groups involved in the project in the construction of standardised spectroscopic chambers. A commercial plastic-ware material widely used in biology is polystyrene, which exhibits excellent optical properties in the wavelength range between 200um and 3mm (frequency range 1.5THz to 100GHz).

Specific measurements were carried out by measuring both the transmission and the complex dielectric constant over a wide spectral range. Further spectroscopic investigations were carried out on other materials, like ZnTe, which may be used as windows of spectroscopic cells in the high frequency range between 500 and 10000cm{-1} (15 - 300THz).

Optical transmission and reflection measurements are performed using two FTIR spectrometers (Bruker IFS 113v, Biorad) in the range from 5 to 15000 cm{-1} and a Mach-Zehnder interferometer in the range from 2 to 40cm{-1} which employs twelve different Backward Wave Oscillators as tunable monochromatic continuous wave sources.


Martin DRESSEL, (Head of the Institut)
Tel.: +49-711-6854946
Fax: +49-711-6854886