US Patent 11189476 Sample support, ionization method, and mass spectrometry method

Provided is a sample support body for ionization of a sample. The sample support body includes a substrate including a first surface and a second surface on sides opposite to each other, a first conductive layer provided on the first surface, and a second conductive layer provided on the second surface. A plurality of through-holes opening on the first surface and the second surface are formed in a predetermined region of the substrate, the predetermined region being for ionizing components of the sample. A width of a first opening on the first surface side is larger than a width of a second opening on the second surface side in each of the plurality of through-holes.