Fast narcotics and explosives detection using a microfluidic sample interface

Author

Frisk, Thomas ; Rönnholm, David ; Van Der Wijngaart, Wouter ; Stemme, Goran

Author_Institution

Dept. of Signals, Sensors & Syst., R. Inst. of Technol., Stockholm, Sweden

Volume

2

fYear

2005

fDate

5-9 June 2005

Firstpage

2151

Abstract

We introduce a novel method and system for fast detection of dust- and vapour-based narcotics and explosives traces. A micro fluidic vapour-to-liquid adsorption interface was built-in to an existing electronic nose instrument, reducing the detection time, machine size, weight, and cost. The system was successfully tested with 50 ng cocaine samples rendering 15 Hz frequency shifts and with 100 ng heroine samples rendering 50 Hz frequency shifts. Also the gravity invariance of the open liquid interface was successfully tested with the interface mounted up side down as well as vertically. The detection time was reduced to half of the time needed in commercial systems.

Keywords

adsorption; drugs; electronic noses; explosions; interface phenomena; microfluidics; microsensors; cocaine samples; drugs; dust-based narcotics; electronic nose instrument; explosives detection; heroine samples; micro fluidic vapour-to-liquid adsorption interface; microfluidic sample interface; microsensors; narcotics detection; open liquid interface; vapour-based narcotics; Costs; Electronic noses; Explosives; Fluidic microsystems; Frequency; Gravity; Instruments; Microfluidics; Rendering (computer graphics); System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors, Actuators and Microsystems, 2005. Digest of Technical Papers. TRANSDUCERS '05. The 13th International Conference on

Print_ISBN

0-7803-8994-8

Type

conf

DOI

10.1109/SENSOR.2005.1497530

Filename

1497530