A5067844925- Metamaterials and Metasurfaces Applications
- Near-Field Optical Microscopy
- Micro and Nano Robotics
- Force Microscopy Techniques and Applications
- Lipid Membrane Structure and Behavior
- Plasmonic and Surface Plasmon Research
- Spectroscopy Techniques in Biomedical and Chemical Research
- Nanowire Synthesis and Applications
- Antenna Design and Analysis
- Advanced Fluorescence Microscopy Techniques
- Photonic Crystals and Applications
- Advanced Antenna and Metasurface Technologies
- Photoacoustic and Ultrasonic Imaging
- Integrated Circuits and Semiconductor Failure Analysis
- Thermography and Photoacoustic Techniques
- RNA Interference and Gene Delivery
- Dental materials and restorations
Ludwig-Maximilians-Universität München
2021-2024
Center for NanoScience
2021-2024
Nanosystems Initiative Munich
2023
Two-dimensional chiral metasurfaces seem to contradict Lord Kelvin's geometric definition of chirality since they can be made coincide by performing rotational operations. Nevertheless, most planar metasurface designs often use complex meta-atom shapes create flat versions three-dimensional helices, although the visual appearance does not improve their chiroptical response but complicates optimization and fabrication due resulting large parameter space. Here we present one geometrically...
Abstract Infrared fingerprint spectra can reveal the chemical nature of materials down to 20-nm detail, far below diffraction limit, when probed by scattering-type scanning near-field optical microscopy (s-SNOM). But this was impossible with living cells or aqueous processes as in corrosion, due water-related absorption and tip contamination. Here, we demonstrate infrared s-SNOM water-suspended objects probing them through a 10-nm thick SiN membrane. This separator stretches freely over up...
Abstract Photonic metasurfaces offer exceptional control over light at the nanoscale, facilitating applications spanning from biosensing, and nonlinear optics to photocatalysis. Many metasurfaces, especially resonant ones, rely on periodicity for collective mode form, which makes them subject influences of finite size effects, defects, edge have considerable negative impact application level. These aspects are important quasi‐bound state in continuum (BIC) is highly sensitive perturbations...
The preservation of oral health over a person's lifespan is key factor for high quality life. Sustaining requires high-end dental materials with plethora attributes such as durability, non-toxicity and ease application. combination different requirements leads to increasing miniaturization complexity the material components composite adhesives, which makes precise characterization blend challenging. Here, we demonstrate how modern IR spectroscopy imaging from micro- nanoscale can provide...
Abstract Scattering scanning near‐field optical microscopy (s‐SNOM) is a powerful technique for mid‐infrared spectroscopy at nanometer length scales. By investigating objects in aqueous environments through ultrathin membranes, s‐SNOM has recently been extended toward label‐free nanoscopy of the dynamics living cells and nanoparticles, assessing both mechanical interactions between tip, membrane liquid suspension underneath. Here, study reports that tapping AFM tip induces reversible...
Accurate and reliable characterization of solids liquids is essential in medical applications as well pharmaceutical industrial production sites. Vibrational microspectroscopy techniques such quantum cascade laser based (QCL-IR), Fourier Transform IR-microscopes or near field scanning imagers have been established. Here we demonstrate how modern IR- spectroscopy imaging from micro to nanoscale can provide a deep insight on the chemical composition. use dental application an example for...
Scattering scanning near-field optical microscopy (s-SNOM) is a powerful technique for mid-infrared spectroscopy at nanometer length scales. By investigating objects in aqueous environments through ultrathin membranes, s-SNOM has recently been extended towards label-free nanoscopy of the dynamics living cells and nanoparticles, assessing both mechanical interactions between tip, membrane liquid suspension underneath. Here, we report that tapping AFM tip induces reversible nanometric...
Photonic metasurfaces offer exceptional control over light at the nanoscale, facilitating applications spanning from biosensing, and nonlinear optics to photocatalysis. Many metasurfaces, especially resonant ones, rely on periodicity for collective mode form, which makes them subject influences of finite size effects, defects, edge all have considerable negative impact application level. These aspects are important quasi-bound state in continuum (BIC) is highly sensitive perturbations due...
Understanding the biophysical and biochemical properties of molecular nanocarriers under physiological conditions with minimal interference is crucial for advancing nanomedicine, photopharmacology, drug delivery, nanotheranostics synthetic biology. Yet, analytical methods struggle to combine precise chemical imaging measurements without perturbative labeling. This challenge exemplified azobenzene-based photoswitchable lipids, which are intriguing reagents controlling nanocarrier on fast...