Technology Offers Optics / Laser
Refractive lenses of rolled and structured films for X-ray optical systems
The newly-invented X-ray lens allows the focusing of X-rays on a point focus of less than 10 µm diameter and also distinguishes itself through high transmissivity and low absorption losses. It is especially interesting for X-ray analysis processes for which a high radiation intensity is required since tenfold radiation intensities are achieved in the focus.
The lenses are easy to manufacture and thus cost-effective.
Simple splicing and reduced coupling losses when joining optical solid- and hollow-core fibers
Optical fibers are particularly well suited for long-distance data transmission, as the attenuation losses are significantly lower than e.g. when using copper conductors. Scientists at the University of Stuttgart have now developed a simple and flexible method of joining solid- and hollow-core fibers that is characterized by low coupling losses and easy and flexible handling. In particular, it is suitable for liquid-filled hollow-core fibers. The method enables a durable, low-loss connection of fibers of different diameters without the application of heat required.
Marker-free chromosome screening
Researchers at Reutlingen University have succeeded in developing a label-free method for the characterization of metaphase chromosomes. The method and the corresponding analysis algorithm allow for visualization of both the chemical properties (absorption) and the morphological properties (stray light) of a chromosome. Using this method, the bands and sub-bands can be characterized with high resolution. Thus, no staining is required for unambiguous identification. The technology can be integrated into all imaging methods (e.g.microscopy).
Device for rotation of 3D samples in microscopy or for CAD-modeling & 3D printing
Scientists at Aalen University have developed a device which allows the rotation of samples. It can be used in conjunction with a range of microscopy methods, including single-plane illumination microscopy (SPIM) and laser scanning microscopy. This enables scientists for the first time to observe 3D samples from all sides using conventional microscopes. Since the sample is kept in a fixed position relative to the microscope, the method opens up new possibilities for the 3D reconstruction of samples, for example in combination with single plane imaging.
Rotational views of a copepod
Correction of angular errors in optical encoder readings prior to sensor signal generation
The purely optical compensation of errors in encoder readings allows for robust sensor design with alignment-free assembly of the encoder disc. Due to a diffractive compensation track the beam spot on the measuring track can be compensated prior to sensor signal generation.
Photo lubrication: Radiation-induced, reversible and irreversible modification of friction and adhesion
Funded by the Baden-Württemberg Stiftung gGmbH, KIT (Karlsruhe Institute of Technology) and Ulm University scientists have developed a procedure that enables the targeted modification of surfaces' friction and adhesion properties through irradiation with light. Depending on the application the modification may be irreversible, i. e. properties are adjusted once-only, or reversible, i. e. facilitating a switch between the minimum and maximum coefficient of friction in a selective and continuous manner. Therefore, the new technique opens up new opportunities for photo-activatable and photo-switchable applications even in the field of micro and nano systems technologies.