title: An integrated QCM-based narcotics sensing microsystem.
abstract: We present the design, fabrication and successful testing of a 14x14x4 mm3 integrated electronic narcotics sensing system which consists of only four parts. The microsystem absorbs airborne narcotics molecules and performs a liquid assay using an integrated quartz crystal microbalance (QCM). A vertically conductive double-sided adhesive foil (VCAF) was used and studied as a novel material for LOC and MEMS applications and provides easy assembly, electrical contacting and liquid containment. The system was tested for measuring cocaine and ecstasy, with successful detection of amounts as small as 100 ng and 200 ng, respectively. These levels are of interest in security activities in customs, prisons and by the police.
authors.affiliation: Microsystem Technology Lab, KTH-Royal Institute of Technology, Stockholm, Sweden.
authors.forename: Thomas
authors.initials: T
authors.lastname: Frisk
authors.forename: Niklas
authors.initials: N
authors.lastname: Sandström
authors.forename: Lars
authors.initials: L
authors.lastname: Eng
authors.forename: Wouter
authors.initials: W
authors.lastname: van der Wijngaart
authors.forename: Per
authors.initials: P
authors.lastname: Månsson
authors.forename: Göran
authors.initials: G
authors.lastname: Stemme
mesh_terms: D004581:Electronics; D004867:Equipment Design; D009294:Narcotics / Q000032:analysis*; D018511:Systems Integration
chemical_list: D009294:Narcotics