A5070284991- Plasmonic and Surface Plasmon Research
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced biosensing and bioanalysis techniques
- Gas Sensing Nanomaterials and Sensors
- Metamaterials and Metasurfaces Applications
- Spectroscopy and Laser Applications
- Photonic Crystals and Applications
- Photonic and Optical Devices
- Spectroscopy and Quantum Chemical Studies
- Radio Wave Propagation Studies
- Advanced Chemical Sensor Technologies
- Photoreceptor and optogenetics research
- Nanowire Synthesis and Applications
- Advanced Fluorescence Microscopy Techniques
- Mechanical and Optical Resonators
Institute of Photonic Sciences
2021-2025
University of Stuttgart
2017-2023
Institute of Science and Technology
2023
Barcelona Institute for Science and Technology
2023
Shanghai Institute for Science of Science
2023
Due to the changing global climate, role of renewable energy sources is increasing importance. Hydrogen can play an important as carrier in transition from fossil fuels. However, ensure safe operations, a highly reliable and sensitive hydrogen sensor required for leakage detection. We present design with purely optical readout that reliably operates between 50 100,000 ppm. The building block reactive sample consists layered structure palladium nanodisks top layer changes its properties...
Palladium nanoparticles have proven to be exceptionally suitable materials for the optical detection of hydrogen gas due dielectric function that changes with concentration. The development a reliable, low-cost, and widely applicable detector requires simple readout mechanism an optimization lowest detectable so-called "perfect absorber"-type structures, consisting layer plasmonic palladium nanoantennas suspended above metallic mirror layer, are promising approach realizing such sensors....
The optical properties of plasmonic nanoparticle ensembles are determined not only by the particle shape and size but also nanoantenna arrangement. To investigate influence spatial ordering on far-field ensembles, we introduce a disorder model that encompasses both "frozen-phonon" correlated disorder. We present experimental as well computational approaches to gain better understanding impact A designated Fourier microscopy setup allows us record real- Fourier-space images metasurfaces...
Biosensing applications based on fluorescence detection often require single-molecule sensitivity in the presence of strong background signals. Plasmonic nanoantennas are particularly suitable for these tasks, as they can confine and enhance light volumes far below diffraction limit. The recently introduced antenna-in-box (AiB) platforms achieved high at fluorophore concentrations by placing gold a aperture. However, hybrid AiB with alternative aperture materials such aluminum promise...
The optical properties of plasmonic metasurfaces are determined not only by the shape and size constituting nanostructures, but also their spatial arrangement. fast progress in nanofabrication has facilitated emergence many advanced metasurface designs that enable controlling propagation light on nanoscale. While simple can be derived from theoretical considerations, it is inevitable to employ computational approaches for complex manipulations incident light. However, most currently...
Nanophotonic biosensors offer exceptional sensitivity in the presence of strong background signals by enhancing and confining light subwavelength volumes. In field nanophotonic biosensors, antenna-in-box (AiB) designs consisting a nanoantenna within nanoaperture have demonstrated remarkable single-molecule fluorescence detection sensitivities under physiologically relevant conditions. However, their full potential has not yet been exploited as current prohibit insightful correlative...
The presented plasmonic palladium-based perfect absorber hydrogen sensor is used to detect via measured reflectance spectra. geometry enables a highly sensitive, cost-effective, miniatuarizable, and purely optical detection system. Through fiber optics, this scheme allows for clear separation of the detector all electronic components rendering it inherently safe, even in explosive environments. has complex transient behavior, which exhibits temperature-dependence, nonlinearities, hysteresis....
Abstract In the quest to decipher chain of life from molecules cells, biological and biophysical questions being asked increasingly demand techniques that are capable identifying specific biomolecules in their native environment, can measure biomolecular interactions quantitatively, at smallest possible scale space time, without perturbing system under observation. The interaction light with offers a wealth phenomena tools be exploited drive this progress. This Roadmap is written...
In this contribution, we present a physically motivated dynamic model for plasmonic hydrogen sensor based on multilayer sample design with palladium nanodisks, which exhibits near-perfect absorption at visible wavelengths. This gas enables detection of low concentrations providing the advantages optical measurement principles and may be produced cost-effectively as miniaturizable system. However, response is highly temperature-dependent nonlinear relationship between external pressure...