The thickness of the layers is selected in such a way that the bright areas of the diffraction pattern coincide at the same spot. The physicists then cut a thin slice from the coated wire. However, it does not diffract light like a glass lens but scatters it like an optical grid generating a pattern of bright and dark patches."And the layer thicknesses have to be extremely precise," Christian Eberl added.This fine beam of x-ray light barely 5 nanometres in diameter, created by researchers led by professor Tim Salditt from the University of Gottingen, allows focusing on smallest details.3 nanometres (millionth of a millimetre) diameter High titanium iron Suppliers in horizontal direction and 4.

　　The more precise the lens is fabricated, the sharper becomes the x-ray focus.The wire slice with a size of only about two thousandth of a millimetre is used as a lens."This slice has 50 to 60 silicon and tungsten layers, comparable to growth rings of a tree," said team member Florian Doring..The central support is a fine tungsten wire with the thickness of only a thousandth of a millimetre.7 nanometres diameter in vertical direction. Around the wire, nanometre-thin silicon and tungsten layers are applied in an alternating way."Instead of a common lens, we use a so-called Fresnel lens which consists of several layers," said co-author Dr Markus Osterhoff.Scientists have successfully generated the world’s sharpest x-ray beam which is ten thousand times thinner than a strand of hair. With this method, the physicists obtained an x-ray beam of 4.