A5009685352- Electron and X-Ray Spectroscopy Techniques
- Laser-Matter Interactions and Applications
- Organic Electronics and Photovoltaics
- Nonlinear Optical Materials Research
- Porphyrin and Phthalocyanine Chemistry
- Digital Holography and Microscopy
- Photochemistry and Electron Transfer Studies
- Surface and Thin Film Phenomena
- Chemical and Physical Properties of Materials
- Optical Coatings and Gratings
- Advanced Chemical Physics Studies
- Mechanical and Optical Resonators
- Thermography and Photoacoustic Techniques
- Synthesis and Properties of Aromatic Compounds
- Orbital Angular Momentum in Optics
- Laser Material Processing Techniques
- Advanced Electron Microscopy Techniques and Applications
- Advanced Fluorescence Microscopy Techniques
- Microfluidic and Bio-sensing Technologies
- Spectroscopy and Quantum Chemical Studies
- Electron Spin Resonance Studies
- Advanced NMR Techniques and Applications
- Quantum Information and Cryptography
Czech Academy of Sciences, Institute of Physics
2023
Leiden University
2023
Huygens Institute for History and Culture of the Netherlands
2018-2020
Institute for Advanced Studies in Basic Sciences
2015-2016
Absorption and fluorescence from single molecules can be tuned by applying an external electric field - a phenomenon known as the Stark effect. A linear effect is associated to lack of centrosymmetry guest in host matrix. Centrosymmetric guests display disordered matrices, but response individual often relatively weak non-uniform, with broad distribution coefficients. Here we introduce novel single-molecule host-guest system, dibenzoterrylene (DBT) 2,3-dibromonaphthalene (DBN) crystal....
The local interaction of charges and light in organic solids is the basis distinct fundamental effects. We here observe, at single-molecule scale, how a focused laser beam can locally shift by hundreds times their natural line width and, persistent way, transition frequency chromophores cooled liquid helium temperature different host matrices. Supported quantum chemistry calculations, results be interpreted as effects photoionization cascade, leading to stable electric field, which...
A new, complementary technique based on Photo Emission Electron Microscopy (PEEM) is demonstrated. In contrast to PEEM, the sample placed a transparent substrate and illuminated from back side while electrons are collected other (front) side. this paper, working principle of technique, coined back-illuminated PEEM (BIPEEM), described. BIPEEM, electron intensity strongly thickness-dependent. This dependence can be described by simple model which contains optical attenuation length mean free...
Here we introduce a phase-shifting digital holography-based method to determine the temperature profile around an irradiated (sub-)micron spherical bead. The utilizes Mach-Zehnder interferometer implemented into open setup microscope. results of gold spheres with diameter 400 nm and also silver-coated micron-sized silica beads embedded in silicone oil are presented. We show that applied is able accurately surface accuracy 1 °C. Our experimental perfectly confirm theoretical prediction
1 Abstract Detailing the physical basis of neural circuits with large-volume serial electron microscopy (EM), ‘connectomics’, has emerged as an invaluable tool in neuroscience armamentarium. However, imaging synaptic resolution connectomes is currently limited to either transmission (TEM) or scanning (SEM). Here, we describe a third way, using photoemission (PEEM) which illuminates ultra-thin brain slices collected on solid substrates UV light and images photoelectron emission pattern...
The Cover Feature illustrates the spectral tuning of single dibenzoterrylene fluorescent emitters by an external electric field. matrix-induced distortion molecules leads to large linear Stark effect. Remarkably, all guest show stable and narrow optical transitions with a uniform magnitude field response, two opposite signs. More information can be found in Article A. Moradi et al on page 55 Issue 1, 2019 (DOI: 10.1002/cphc.201800937).