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Online Detection of Explosives by Microbalance Sensors


Scientists of the Rheinische Friedrich Wilhelms University of Bonn and the Max Planck Gesellschaft developed a modular sensor system for onlinedetection of Triacetontriperoxide (TATP) in gas phase. The detection took place in open air flow. Common Substances could be discriminated from the TATP signal. 

The technology is  based on chemical modified microbalance quartz sensors. The use of common electronic parts and minor amount of affine sensor materials leads to a cost effective fabrication. The invention odemS enables a direct online detection of the explosive TATP without any collection procedure. Therefore a rapid and continuous on-site Detection of persons and Objects on TATP traces is possible. The system offers a broad application spectrum. It could be used to control a great amount of people e.g. in airlocks. On the other hand, the system has the potential for minimization. The fabrication of a handheld version of odemS could lead to a direct control system for persons, items or vehicles. The modular device could easily customize for other analytical application. 


  • Very high sensitivity by high frequency oscillating Crystals
  • Use of low-cost electronic, potential for minimization and mass production
  • Continuous detection of the explosive TATP without any collection procedure
  • Direct detection and identification of the very volatile TATP in the airflow, (sensitivity approx. under 1ppm)
  • Reversible Sensor system with rapid recovery (few seconds)
  • Modular device is easily customise for other analytical application


PROvendis offers on behalf of the University of Bonn licenses for the commercialization of odemS to innovative companies.

PROvendis GmbH

Dr. Thorsten Schaefer
+49.208 94105-27
Schloßstr. 11-15
45468 Mülheim an der Ruhr

Development status



odemS - Online Detection of Explosives by Microbalance Sensors

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Contact | Main Office

TransferAllianz e. V.
Christiane Bach-Kaienburg
(Managing Director)

c/o PROvendis GmbH
Schloßstr. 11-15
D-45468 Mülheim an der Ruhr