The gas micropreconcentrators in LTCC and MEMS technologies for breath acetone analysis

The authors designed and manufactured the gas micropreconcentrators in two of the most popular industry technologies: low temperature cofired ceramic (LTCC) and microelectromechanical systems (MEMS). Both structures have similar lateral dimensions: 20 mm × 25 mm × 1.2 mm for micropreconcentrator in LTCC technology and 20 mm × 20 mm × 1.68 mm for micropreconcentrator in MEMS technology. Both structures contain a 120 mm long channel filled with adsorbent material. The authors used commercially available adsorbents supplied by Sigma-Aldrich. In the paper the authors describe thermal measurements, power consumption and concentration factor tests of manufactured structures for gaseous acetone.