Surface-assisted laser desorption/ionization method, mass spectrometry method and mass spectrometry device

A sample support for ionizing a sample, comprising:

• a substrate in which a plurality of through-holes passing from one surface thereof to the other surface thereof are provided;
• a conductive layer formed of a conductive material and configured to cover at least a portion of the one surface not provided with the through-holes so that each opening of the through-holes is not covered by the conductive layer;
• and
• a frame mounted on an outer edge of the substrate,
• wherein the through-holes have a width of 1 to 700 nm,
• the substrate has a thickness of 1 to 50 μm, and
• an effective region not covered by the frame in the one surface of the substrate is formed in a quadrangular shape.

A sample support for ionizing a sample, comprising

• a substrate which is formed of a conductive material and in which a plurality of through-holes passing from one surface thereof to the other surface thereof are provided;
• and
• a frame mounted on an outer edge of the substrate,
• wherein the through-holes have a width of 1 to 700 nm,
• the substrate has a thickness of 1 to 50 μm, and
• an effective region not covered by the frame in the one surface of the substrate is formed in a circular shape.

A sample support for ionizing a sample, comprising

• a substrate which is formed of a conductive material and in which a plurality of through-holes passing from one surface thereof to the other surface thereof are provided;
• and
• a frame mounted on an outer edge of the substrate,
• wherein the through-holes have a width of 1 to 700 nm,
• the substrate has a thickness of 1 to 50 μm, and
• an effective region not covered by the frame in the one surface of the substrate is formed in a quadrangular shape.