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Title: Printable sensors for explosive detonation

Here, we report the development of an organic thin film transistor (OTFT) based on printable solution processed polymers and employing a quantum tunnelling composite material as a sensor to convert the pressure wave output from detonation transmission tubing (shock tube) into an inherently amplified electronic signal for explosives initiation. The organic electronic detector allows detection of the signal in a low voltage operating range, an essential feature for sites employing live ordinances that is not provided by conventional electronic devices. We show that a 30-fold change in detector response is possible using the presented detector assembly. Degradation of the OTFT response with both time and repeated voltage scans was characterised, and device lifetime is shown to be consistent with the requirements for on-site printing and usage. The integration of a low cost organic electronic detector with inexpensive shock tube transmission fuse presents attractive avenues for the development of cheap and simple assemblies for precisely timed initiation of explosive chains.
Authors:
; ; ; ;  [1] ;  [2]
  1. Priority Research Centre for Organic Electronics, University of Newcastle, University Drive, Callaghan, New South Wales 2308 (Australia)
  2. AEL Mining Services Ltd., 1 Platinum Drive, Modderfontein, Johannesburg, 1645 (South Africa)
Publication Date:
OSTI Identifier:
22351136
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 14; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CHAINS; COMPOSITE MATERIALS; DETECTION; ELECTRIC POTENTIAL; ELECTRONIC EQUIPMENT; EXPLOSIONS; EXPLOSIVES; LIFETIME; ORGANIC SEMICONDUCTORS; POLYMERS; SENSORS; THIN FILMS; TRANSISTORS; TRANSMISSION; TUNNEL EFFECT