Dynamic saturation optical microscopy: employing dark-state formation kinetics for resolution enhancement
文献情報
Jana Humpolíčková, Aleš Benda, Radek Macháň, Jörg Enderlein, Martin Hof
Fluorescence microscopy has become one of the most rapidly developing observation techniques in the field of molecular biology, since its high sensitivity, contrast and labeling specificity together with being non-invasive fulfill the most important requirements of live cell imaging. The biggest limitation of the technique seems to be the spatial resolution which is, based on Abbe's diffraction law, restricted to some hundreds of nanometres. Recently, various approaches have been developed that overcome the limit imposed by the diffraction barrier and these methods currently lead the development in the field of fluorescence microscopy. In this contribution, we present dynamic saturation optical microscopy (DSOM)—a new technique that monitors the temporal decay of the excited singlet state due to a dark state formation. By mapping the intensity dependent decay kinetics, enhanced resolution images can be obtained. Generally, any dark state of fluorescent molecules can be employed in DSOM. Here, we focus our attention on triplet state formation.
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










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