Low power consumption hydrogen sensor
 Resistive sensor of explosive concentrations of hydrogen
 Hydrogen gas analyzers                             
 Hydrogen sulphide gas-analyzer                      
 Nitrogen dioxide gas-analyzer                    
 Ammonia gas analizer                              
 Sensor based explosives detector                      
 Portative hydrogen leak detector                      
 Portative hydrogen gas-analyzer VG-2                       
 Portative hydrogen gas-analyzer VG-5                      
 Publications'2020 until now 
National Research Nuclear University MEPhI

Solid state and nanosystems physics department
Laboratory "Development and making of sensors based on MIS-structures"

Sensor based explosive derector

   In Moscow Engineering-Physics Institute a novel explosive trace detection system has been recently developed. The detector is an explosive’s vapor analizer. It is suited to detect different types of explosives including TNT, DNT, RDX and dynamite. This system detects the vapors or microscopic particles emitted from the explosives and the explosive traces on the item sampled. The sensitive element of the detector is a high sensitive MIS (metal-insulator-semiconductor) sensor. It is designed by means of thin films deposition laser technology (PLD). The device is suited for the detection of the explosive vapours down to the ppb range (1 ppb or10-12 g/sm3). The sensitivity can be increased to 10-13 g/sm3 by the proper optimization of the construction of the device.
   Sensor Based Explosive Detector is fast enough to satisfy the modern requirements, the analysis time is about 15 seconds. It is weighing no more 1 kg. Supplying voltages: AC 220 V, 50 Hz; DC 12 V, 5 W. The device is quite light and hand-portable. It is also simple in use. The detector will be useful as first level of security for those who work to protect public from terror threat.

Parameters Parameter values
Minimal detectable concentration of explosives vapours (LOD - limit of detection) 10-12 g/sm3
Response time, τ0.9 15 sec
Power consumption AC 220V ~50 Hz, DC 12V, 5 W
Estimated weight 1 kg

    World commonly used explosive detection systems are designed on the base of Ion Mobility Spectrometry, Chromatography, Masspectrometry technologies. Thus such systems are large and sophisticated. Sensor Based Explosive Detector is only sensor-based system. The success in the development of the Sensor-based system is concerned with the development of the high sensitive sensors in our laboratory with 103 times higher sensitivity than that of the other sensors.
   The device is on the construction revision stage now. So, we are interested in collaboration in a field of optimisation of the construction of the device on the basis of the investigated physical principals and in a field of the production and application.

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