Patent ID: 8217343

Claim:
A device, comprising: a first substrate having a principal surface comprising a plurality of sample sites each configured for having a corresponding sample provided thereat; a structure having a principal surface facing and spaced apart from the principal surface of the first substrate, the structure having a plurality of microplasma generation sites corresponding to the sample sites of the first substrate, each of the microplasma generation sites being spaced apart from and facing a corresponding one of the sample sites of the first substrate, each of the microplasma generation sites comprising: a corresponding cavity provided in the structure and configured to receive a gas, the corresponding cavity having a cross-sectional area; a corresponding orifice having a cross-sectional area smaller than the cross-sectional area of the corresponding cavity, the corresponding orifice extending from the cavity to the principal surface of the structure; a corresponding split-ring resonator electrode having a gap in the electrode, wherein the split-ring resonator electrode is configured to supply energy to the gas to generate a microplasma within the cavity; and an ion extraction device configured to extract ions from a gap between the first substrate and the structure.