A low-cost, portable optical explosive-vapour sensor

SENSORS AND ACTUATORS B-CHEMICAL

卷:245

Article

Gillanders, Ross N.¹  Samuel, Ifor D. W.¹  Turnbull, Graham A.¹ 

[1] Univ St Andrews, Sch Phys & Astron, Organ Semicond Ctr, SUPA, St Andrews KY16 9SS, Fife, Scotland

关键词: Explosives detection;    Super yellow;    Arduino;    Photoluminescence;    ERW;    Humanitarian demining;   

DOI  :  10.1016/j.snb.2017.01.178

来源: Elsevier

【 摘 要 】

Humanitarian demining requires a broad range of methodologies and instrumentation for reliable identification of landmines, antipersonnel mines, and other explosive remnants of war (ERWs). Optical sensing methods are ideal for this purpose due to advantages in sensitivity, time-of-response and small form factor. In this work we present a portable photoluminescence-based sensor for nitroaromatic vapours based on the conjugated polymer Super Yellow integrated into an instrument comprising an excitation LED, photodiode, Arduino microprocessor and pumping mechanics for vapour delivery. The instrument was shown to be sensitive to few-ppb concentrations of explosive vapours under laboratory conditions, and responds to simulated buried landmine vapour. The results indicate that a lightweight, easy-to-operate, low-cost and highly-sensitive optical sensor can be readily constructed for landmine and ERW detection in the field, with potential to aid worldwide efforts in landmine mitigation. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

Free