In Situ Spectroscopy

Rapid developments in the field of material sciences and biofunctional surfaces have inspired one innovation after the other, for example, in sensor technology and optical applications. However, improved methods of characterising the properties of materials are required to research these new, often functional materials and to deploy them in a sensible manner. Researching and refining such methods is the remit of the In Situ Spectroscopy group.

The group is concerned with functional materials, such as metamaterials and hybrid materials: materials with artificially created microstructures and nanostructures whose optical properties and adsorption characteristics have been adapted to the application in question. One of the group's core competences is in-situ investigations at solid-liquid interfaces. Such interfaces are key factors for liquid sensors that are used, for example, to detect specific molecules in liquids. These analyses enable the work group to examine in detail how the surface of an organic or biofunctional film in a sensor changes when it comes into contact with substances, and how this influences the properties of the surface. The group primarily uses infrared ellipsometry and spectroscopy for this purpose. Together with optical models and simulation calculations, the measurements provide direct access to the optical and structural properties of the materials.  

Current Publications

IR laser polarimetry: breaking limits of FTIR polarimetry for thin film studies

SPIE Proceedings, Vol. 2021, Nr. 11635, , P. 116350U1–7
Type: Journal article

Determination of residual dimethyl sulfoxide by high-resolution continuum source graphite furnace molecular absorption spectrometry

Spectrochimica Acta Part B-Atomic Spectroscopy, Vol. 177,
Type: Journal article

Laser-IR-Ellipsometrie für die Oberflächenanalytik

GIT Labor-Fachzeitschrift, Vol. 2020, Nr. 11, , P. 36–38
Type: Journal article

Molecular Changes in Vapor-based Polymer Thin Films Assessed by Characterization of Swelling Properties of Amine-Functionalized Poly-p-xylylene

Macromolecular Chemistry and Physics, Vol. 221, Nr. 19,
Type: Journal article

Hyperspectral mid-infrared ellipsometric measurements in the twinkling of an eye

Spectroscopy Asia, Vol. 16, Nr. 2, , P. 8–12
Type: Journal article

Laser IR ellipsometry for surface analytics - Hyperspectral and microfluidic applications

Book series: Laser IR ellipsometry for surface analytics
Type: Book contribution