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

Mid-infrared nanospectroscopy of Berreman mode and epsilon-near-zero local field confinement in thin films

Spotlight on Optics - Highlighted Articles from OSA Journals -October 2017
Optical Materials Express, Vol. 7, Nr. 10, , P. 3706–3714
Type: Journal article

Mid-infrared nanospectroscopy of Berreman mode and epsilon-near-zero local field confinement in thin films

Spotlight on Optics - Highlighted Articles from OSA Journals -October 2017
Optical Materials Express,
Type: Journal article

Infrared spectroscopic ellipsometry of micrometer-sized SiO2 line gratings

Applied Surface Science, Vol. 416, , P. 397–401
Type: Journal article

Fabrication and Characterization of Surfaces Modified with Carboxymethylthio Ligands for Chelate-Assisted Trapping of Copper

ACS Applied Materials & Interfaces, Vol. 9, Nr. 28, , P. 24273–24281
Type: Journal article

Functionalization of any substrate using covalently modified large area CVD graphene

Chemical communications (Cambridge, England), Vol. 53, Nr. 67, , P. 9308–9311
Type: Journal article

Supramolecular Orientation in Anisotropic Assemblies by Infrared Nanopolarimetry

ACS Macro Letters, Vol. 6, Nr. 6, , P. 598–602
Type: Journal article