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Team Leader: Prof. Dr. Georg Garnweitner

The Division Nanomaterials investigates the fabrication, stabilization and application of nanoparticles and nanostructures. The nanoparticles are synthesized via “bottom-up” methods, with a focus on the nonaqueous synthesis in organic solvents.. Via this method, the preparation of small nanoparticles (2-20 nm in size) with narrow size distribution and high sample homogeneity is possible. Due to their high stability and manifold properties, we concentrate on the synthesis of metal oxides. Via a scale-up to liter-scale reactors and applying our broad expertise on nanoparticle process technology, also the preparation of larger quantities of nanoparticles (up to 50 g/batch) and the tailoring of particle properties are possible.

Stabilized metal oxide nanoparticles and their application in nanocomposites, luminescent dispersions and functional optical devices (from left to right).

In addition to the synthesis, the stabilization and functionalization  of nanoparticles are crucial issues for applications and thus are investigated in detail. Due to their very large specific surface area (for 4 nm sized particles, already about 30 % of all atoms are located at the particle surface), nanoparticles tend to agglomerate, but can be stabilized by e. g. coverage with organic molecules. This also allows one to tailor many other properties, such as the chemical behavior, biological and catalytic acitivity, or optical properties, and achieve self-assembly to ordered superstructures.
Additionally, novel applications are developed utilizing chemically tailored nanoparticles. Our main interests thereby include the fields of optimized polymer nanocomposite materials and nanoparticulate and nanocomposite thin films as well as magnetic nanomaterials.
The Branch Nanomaterials is a core research group within the Laboratory for Emerging Nanometrology and investigates the metrology of defined nanoparticles. The synthesis of materials for future battery systems is carried out within our Junior Research Group “Solid State Battery Materials and Electrodes” in cooperation with the Battery LabFactory Braunschweig (BLB).

Team Members

Current Projects
Synthesis, self-assembly and printing of hard-magnetic nanoparticles more

Quanomet, Junior Research Group “Nanofluidics & Particle Manipulation” more

Processing of conjugated nanoparticle hybrid systems for use in biomedical diagnostics more

Fractionation of Nanoparticles by Preparative Gel Electrophoresis subproject of the SPP 2045 more

Advanced lithium-sulfur battery concepts for aviation (aero-LiS-SE) more

Principles of nanoscale matrix additives for fibre composite more

Nanoscale drug carrier systems as therapeutics for targeted tumor therapy more

Small Angle X-ray Scattering as Metrological Instrument – A Correlation Study on the Optical Properties of Semiconductor Nanoparticles as ubiquitous Measure of Particle Size more

Fractionation of Nanoparticles by Preparative Gel Electrophoresis more

Thin nanoparticle films for cathode composites in all solid state batteries more

ElektroBak – Innovative Materials and Concepts for Microbial Electrochemical Systems more

Characteristics of a nanoparticulate coating based on the process chain more

Finished Projects
Synthesis and processing of tailored AZO nanocrystals more

Preparation of multifunctional nanocomposite thin films made of nanosized building blocks more

Process technology of the synthesis of metal oxide nanoparticles by nonaqueous sol gel methods more

Biocompatible iron-oxide nanoparticles for the in-situ magnetic separation of bioproducts more

Small-Molecule Stabilization of ITO Nanoparticles more

AiF – CleanCoat: Development of transparent, photocatalytically active coatings on polymer substrates with long-term stability more

Protein purification with functionalized magnetic nanoparticles more