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Apparatus and method for generating chemical signatures using differential desorption

  • US 10,553,417 B2
  • Filed: 04/18/2019
  • Issued: 02/04/2020
  • Est. Priority Date: 06/15/2014
  • Status: Active Grant
First Claim
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1. A device comprising:

  • a wand including a plastic ticket, where the plastic ticket is adapted to contact a sample at a plurality of target areas on the plastic ticket including a first target area of the plurality of target areas and a second target area of the plurality of target areas, where the first target area is a distance from the second target area;

    a desorption ionization source adapted to generate a stream of energetic particles at a first temperature at the first target area to form a first plurality of sample ions, where the desorption ionization source is adapted to generate the stream of energetic particles at a substantially constant second temperature at the second target area to form a second plurality of sample ions; and

    an analyzer, adapted to analyze one or both the first plurality of sample ions and the second plurality of sample ions.

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