A method of detecting radiation that includes providing a layer of high purity single crystal CVD diamond, applying an electric field of no greater than 0. The pre-treated porous metal substrate is disposed inside the metal frame. Flexural rigidity of the flap-like sections as measured in a transverse direction of the article is higher than that of the article as measured in regions lying immediately inside the respective zones which are, in turn, contiguous to the respective side edges, so that a direction in which the connector sheet strips extend can be easily reversed. The grate sections are pivotally connected such that at least one of the grate sections pivots about the other grate section to allow unencumbered access to the sink drain. The structure of the joint buffers the stress generated by the secondary mounting and temperature cycle at the bond for the semiconductor element and the frame having a large difference in thermal expansion coefficient from each other. Furthermore, the invention relates to a corresponding method.