Suche
Mein Konto
Revolutionary nanoplates: new possibilities for medical technology
The TU Dresden is conducting research with the HZDR on cadmium selenide nanoplates for innovative materials in medical diagnostics and NIR technology.
Revolutionary nanoplates: new possibilities for medical technology
On March 9, 2025, researchers from the Technical University of Dresden (TU Dresden) and the Helmholtz Center Dresden-Rossendorf (HZDR) will report progress in the development of novel electronic materials. The team has specific methods for producing Cadmium selenide nanoplates (CdSe), which impress with their exceptional optical properties.
These nanostructures have been a central research topic since the turn of the millennium because in recent years they have shown promising applications in the field of nanotechnology have found. In particular, scientists are interested in near-infrared (NIR) functionality because these materials could make important contributions to medical diagnostics, communication technologies and solar energy.
Research and Development
Dr. Rico Friedrich and Prof. Alexander Eychmüller lead the research project, which focuses on the challenges of targeted material modification. Using the cation exchange method, the researchers are able to precisely control the composition and structure of the nanoparticles. This targeted connection could enable the development of new NIR-active sensors or powerful electronic components in the future.
The researchers examined the nanostructural properties using sophisticated synthetic processes, microscopy and computer analyses. It was shown that the active corners of the nanoplates, which play a key role due to their chemical reactivity, are crucial for the connection. Such structured systems can significantly increase the efficiency and functionality of the materials.
Link to quantum physics
In addition to materials research, there are Investigations into quantum dots (QDs) at the center of scientific discussions. Historically, early work by Brus and colleagues showed how important these small semiconductors are in terms of photophysical effects. Recent studies shed light on the photo-charge phenomenon and the associated interactions as they influence the behavior of excitons and the efficiency of Auger relaxation.
Research shows that the dielectric environment of these quantum dots has a direct impact on their optical properties. Models such as the CTST (Charge-Tunneling and Self-Trapping) model examine the variations between neutral and charged states, highlighting the complexity of interactions in nanoscale structures.
These findings are not only important for the development of electronic devices, but also expand our understanding of the role of surface ligands, which play a crucial role in the processing and utilization of QDs.
In summary, ongoing research indicates Nanoplates and quantum dots, how complex and important nanotechnology could be for future applications in the field of materials science and beyond. Findings from this work not only affect the development of new technologies, but also fundamental questions in nanoscience.