A5064391606- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Carbon Nanotubes in Composites
- Nanoplatforms for cancer theranostics
- Advanced biosensing and bioanalysis techniques
- High-Energy Particle Collisions Research
- Electrochemical sensors and biosensors
- Advanced Chemical Sensor Technologies
- Luminescence and Fluorescent Materials
- Bone Tissue Engineering Materials
- Biosensors and Analytical Detection
- Molecular Junctions and Nanostructures
- Carbon and Quantum Dots Applications
- SARS-CoV-2 detection and testing
- Black Holes and Theoretical Physics
- Molecular Communication and Nanonetworks
- Mechanical and Optical Resonators
- Luminescence Properties of Advanced Materials
- Advanced Nanomaterials in Catalysis
- Dendrimers and Hyperbranched Polymers
- Nanopore and Nanochannel Transport Studies
- Advanced Algebra and Geometry
- Advanced Biosensing Techniques and Applications
- Facial Trauma and Fracture Management
- Polydiacetylene-based materials and applications
Swiss Federal Laboratories for Materials Science and Technology
2022-2024
ETH Zurich
2022-2024
Universitätsklinik Balgrist
2024
University of Zurich
2024
University of St. Gallen
2023
University of Göttingen
2019-2022
Ruhr University Bochum
2020-2022
Fraunhofer Institute for Microelectronic Circuits and Systems
2021
Nanoscale Microscopy and Molecular Physiology of the Brain Cluster of Excellence 171 — DFG Research Center 103
2021
University of Bonn
2005-2009
Near-infrared (nIR) fluorescent single-walled carbon nanotubes (SWCNTs) were designed and interfaced with leaves of Arabidopsis thaliana plants to report hydrogen peroxide (H2O2), a key signaling molecule associated the onset plant stress. The sensor nIR fluorescence response (>900 nm) is quenched by H2O2 selectivity against other stress-associated molecules within physiological range (10–100 μM). In vivo remote imaging sensors enabled optical monitoring health in stresses including UV-B...
Abstract Infectious diseases are worldwide a major cause of morbidity and mortality. Fast specific detection pathogens such as bacteria is needed to combat these diseases. Optimal methods would be non-invasive without extensive sample-taking/processing. Here, we developed set near infrared (NIR) fluorescent nanosensors used them for remote fingerprinting clinically important bacteria. The based on single-walled carbon nanotubes (SWCNTs) that fluoresce in the NIR optical tissue transparency...
The strong ${K}^{\ensuremath{-}}p$ scattering length is extracted within chiral SU(3) unitary approaches from a very large variety of fits to low-energy data. Very good overall agreement with available data obtained and the resulting compared new accurate kaonic hydrogen DEAR. pole structures experiment are critically examined.
Single-walled carbon nanotubes (SWCNTs) have unique photophysical properties and promise many novel applications. Their functionalization is crucial, but the organic phase around SWCNTs poorly understood. Noncovalent with single-stranded DNA (ssDNA) one of most used approaches to solubilize in water, variation ssDNA sequences leads major advances separation SWCNT chiralities SWCNT-based sensors. However, exact number adsorbed molecules on ssDNA/SWCNT complexes consequently surface coverage...
Semiconducting single-wall carbon nanotubes (SWCNTs) fluoresce in the near-infrared (NIR) region, and emission wavelength depends on their chirality (n,m). Interactions with environment affect fluorescence can be tailored by functionalizing SWCNTs biopolymers such as DNA, which is basis for fluorescent biosensors. So far, biosensors have been mainly assembled from mixtures of SWCNT chiralities large spectral overlap, affects sensitivity well selectivity prevents multiplexed sensing. The main...
Semiconducting single-walled carbon nanotubes (SWCNTs) are versatile near-infrared (NIR) fluorophores. They noncovalently modified to create sensors that change their fluorescence when interacting with biomolecules. However, noncovalent chemistry has several limitations and prevents a consistent way molecular recognition reliable signal transduction. Here, we introduce widely applicable covalent approach without impairing the in NIR (>1000 nm). For this purpose, attach single-stranded DNA...
Abstract Imaging of complex (biological) samples in the near-infrared (NIR) is beneficial due to reduced light scattering, absorption, phototoxicity, and autofluorescence. However, there are few NIR fluorescent materials known suitable for biomedical applications. Here we exfoliate layered pigment CaCuSi 4 O 10 (Egyptian Blue, EB) via ball milling facile tip sonication into nanosheets (EB-NS). The size EB-NS can be tailored diameters <20 nm heights down 1 nm. fluoresce at 910 fluorescence...
Single-wall carbon nanotubes (SWCNT) fluoresce in the near-infrared (NIR) region and have been assembled with biopolymers such as DNA to form highly sensitive molecular (bio)sensors. They change their fluorescence when they interact analytes. Despite progress engineering these sensors, underlying mechanisms are still not understood. Here, we identify processes rate constants that explain photophysical signal transduction by exploiting sp3 quantum defects sp2 lattice of SWCNTs. As a model...
Abstract Plants use secondary metabolites such as polyphenols for chemical defense against pathogens and herbivores. Despite their importance in plant pathogen interactions tolerance to diseases, it remains challenging detect complex tissues. Here, we create molecular sensors polyphenol imaging that are based on near‐infrared (NIR) fluorescent single‐wall carbon nanotubes (SWCNTs). We identified polyethylene glycol–phospholipids render (6,5)‐SWCNTs sensitive (K d =90 nM) (tannins,...
Hip arthroplasty effectively treats advanced osteoarthritis and is therefore entitled as "operation of the 20th century." With demographic shifts, USA alone projected to perform up 850 000 arthroplasties annually by 2030. Many implants now feature a ceramic head, valued for strength wear resistance. Nonetheless, fraction, 0.03% may fracture during their lifespan, demanding complex removal procedures. To address this, radiation-free, fluorescence-based image-guided surgical technique...
Chiral SU(3) effective field theory in combination with a relativistic coupled channels approach is used to perform novel analysis of the strong interaction shift and width kaonic hydrogen view new accurate DEAR measurements. Questions consistency previous K^- p data are examined. Coulomb isospin breaking effects turn out be important both taken into account this work.
Single-walled carbon nanotubes (SWCNTs) have unique photophysical properties and serve as building blocks for biosensors, functional materials devices. For many applications it is crucial to use chirality-pure SWCNTs, which requires sophisticated processes. Purification procedures such wrapping by certain polymers, phase separation, density gradient centrifugation or gel chromatography been developed yield distinct SWCNT species wrapped a specific polymer surfactant. However, require...
Abstract Engineering of catalytically active inorganic nanomaterials holds promising prospects for biomedicine. Catalytically metal oxides show applications in enhancing wound healing but have also been employed to induce cell death photodynamic or radiation therapy. Upon introduction into a biological system, are exposed complex fluids, causing interaction and adsorption ions proteins. While protein corona formation on is acknowledged, its modulation nanomaterial catalytic efficacy less...
The layered silicates Egyptian Blue (CaCuSi
Immune cells take up nanoscale materials and can be programmed to release it again, which has important implications for understanding cellular functions, biocompatibility as well biomedical applications.
It is shown how gauge invariance obtained for the coupling of a photon to two-body state described by solution Bethe-Salpeter equation. This illustrated both complex scalar field theory and interaction kernels derived from chiral effective Lagrangians.
The claim that the light quark mass ratio (md−mu)/ms can be extracted from decay width Γ(η′→π0π+π−)/Γ(η′→ηπ+π−) is critically investigated within a U(3) chiral unitary framework. influence of recent VES data on η′→ηπ+π− also discussed.