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Application Library

Fluorescence in PCR Diagnostics
Fluorescence in PCR Diagnostics
PCR diagnostics makes it possible to detect and sequence DNA. RT-PCR is used to detect or sequence RNA. In a first step, the RNA is transkripted into DNA using reverse transkritase and then amplified in the polymerase chain reaction (PCR). Finally, the DNA sections are sequenced... Learn more about it in this article.
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CARS Microscopy
CARS Microscopy
CARS stands for Coherent Anti-Stokes Raman Scattering. It is a non-linear Raman spectroscopy method which not only uses an excitation laser, but also irradiates the sample with a second, red-shifted so-called Stokes-laser.
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Multiphoton (Fluorescence) Microscopy
Multiphoton (Fluorescence) Microscopy
In multiphoton microscopy, molecules are transformed into an electronically excited state by several photons. From this state, these molecules relax back into the electronic ground state by emission of a photon. This has the consequence that the emitted photon has a higher energy (shorter wavelength) than the photons for excitation.
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Filter Hints from Experts: Troubleshooting Signal Interference in Optical Systems
Filter Hints from Experts: Troubleshooting Signal Interference in Optical Systems
Beam distortion, ghost images, disturbing background signals or background radiation are problems that are perceived as very disturbing by users in optics and photonics, fluorescence microscopy, high-resolution microscopy or in the development of handheld systems.
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TIRF Microscopy
TIRF Microscopy
Total Internal Reflections Fluorescence Microscopy is a special application of (fluorescence) confocal microscopy. TIRF microscopy typically uses a high numerical aperture (NA) objective.
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A Brief Introduction to Super-resolution Microscopy
A Brief Introduction to Super-resolution Microscopy
'Super-resolution microscopy' or 'imaging' generally refers to any microscopic technique capable of performing images with resolution below the diffraction limit.
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Raman Spectroscopy
Raman Spectroscopy
Raman spectroscopy is used to measure vibrational and rotational transitions of molecules, similar to IR spectroscopy (with different selection rules). The difference is that Raman spectroscopy does not use IR light, but visible light. This makes it possible to use detectors and optics that are standard in optics.
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STED Microscopy
STED Microscopy
STED microscopy (STED = Stimulated Emission Depletion), as a high-resolution method operating in scan mode, has special requirements for the properties of its optical components.
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Confocal Laser Scanning Microscopy (CLSM)
Confocal Laser Scanning Microscopy (CLSM)
Confocal laser scanning microscopy is a special type of light microscopy in which a sample is scanned point by point and then these points are assembled pixel by pixel on a computer to create an image.
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Fluorescence Microscopy
Fluorescence Microscopy
Fluorescence microscopy is a special form of light microscopy, which has established itself worldwide and is often used in the field of life sciences thanks to its advantages in terms of contrast, selectivity and simplicity of staining.
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FRET Microscopy
FRET Microscopy
The ‘Förster (or Fluorescence) Resonance Energy Transfer Microscopy’ is a specialized application of fluorescence microscopy. In the FRET effect, energy is transferred from a donor molecule to an acceptor molecule. The efficiency of this energy transfer decreases with the sixths power of the distance and also depends on the orientation of the molecules. Due to this strong distance dependency, one can optically measure distances from 0 to approx. 10 nm.
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STORM Microscopy
STORM Microscopy
STORM stands for 'STochastic Optical Reconstruction Microscopy'. Together with PALM (Photoactivated Localization Micrsocopy) and GSDIM (Ground-State Depletion and Individual Molecule Return) and many other similar methods, these are single-molecule localization methods operating in the far-field mode.
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