Abstract: A sample cell including a sample space, restricted on its first side by a first inner side of a first membrane and on its second side by a second inner side of a second membrane. A spacer is arranged between the first and the second inner sides to establish a distance between the membranes. A first retaining element is arranged on a first outer side, facing away from the sample space, of the first membrane and a second retaining element is arranged on a second outer side, which faces away from the sample space, of the second membrane, the first and second retaining elements together form a retaining structure. The first and second retaining elements each have a plurality of apertures aligned with each other in a direction transverse to the flat sides, to form a plurality of examination windows, in which the outer sides of the membranes are exposed.

Abstract: A sample holder for the examination of small particles contained in a suspension using X-rays or electron beams is depicted and described, wherein the sample holder includes a single-crystal substrate extending in a plane, the dimensions of which in the plane are several times larger than the dimensions perpendicular to the plane, wherein the substrate includes a first and a second surface, which run parallel to the plane, and wherein the substrate includes through-holes, which extend perpendicular to the plane and which run from the first to the second surface.