| abstract |
A sample holder device 100, 101 which is designed to hold biological samples 1 includes a base body 10 having at least one wall 11 which is arranged to delimit a sample receptacle 12 , wherein the at least one wall 11 includes, at least on a surface facing the sample receptacle 12 , a planar, carbon-based material which is impermeable to a liquid in sample receptacle 12 , wherein the carbon-based material has such a high carbon content that the carbon-based material is opaque and electrically conductive. The sample holder device includes, e.g., a dish, in particular petri dish 101 , a planar substrate, a multiwell plate, a sample beaker, in particular in the form of a beaker glass, a sample tube, in particular in the form of a test tube or a tube for cryopreservation (cryovial), and/or a hollow fiber. Methods for using the sample holder device are also described. |