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首页> 外文期刊>IEEE sensors journal >Explosives Detection by Array of Si -Cantilevers Coated With Titanosilicate-Type Nanoporous Materials
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Explosives Detection by Array of Si -Cantilevers Coated With Titanosilicate-Type Nanoporous Materials

机译：钛硅酸盐型纳米多孔材料包覆的硅悬臂梁阵列炸药检测

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摘要

An array comprising four Si -cantilevers coated with nanoporous functionalized ETS-10 crystals sub-micrometric in size has been developed as a multisensing platform for explosives recognition in vapor phase. The detection capabilities of the proposed device have been tested for common taggants [such as 1-methyl-2-nitro-benzene (o-MNT)] and explosives (commercial detonation cord, a plastic tube filled with pentaerythritol tetranitrate (PETN); and C-4, a mixture of cyclotrimethylenetrinitramine (RDX), binders and plastifiers). The general strategy for the detection of explosives in vapor phase is based on the characteristic fingerprint each one produces as a result of the dissimilar chemical interactions between the ETS-10 coated -cantilevers and the target molecules emanating from the explosives and swept by ambient air. A portable lock-in amplifier has been implemented to exploit the truly benefits of the array in terms of portability, reduced size, and energy consumption. Such low-power electronic interface is capable of creating the excitation signal as well as obtaining the response values of four resonating -cantilevers simultaneously. The resulting sensing platform has successfully been applied for the o-MNT, PETN, and RDX detection at trace level.
机译：已经开发了包括四个涂覆有亚微米尺寸的纳米孔功能化ETS-10晶体的Si悬臂阵列，作为用于气相炸药识别的多传感平台。所提议的设备的检测能力已针对常见标签剂（例如1-甲基-2-硝基苯（o-MNT））和炸药（商业引爆线，装有四硝酸季戊四醇酯的塑料管（PETN））进行了测试；以及C-4，是环三亚甲基三硝胺（RDX），粘合剂和增塑剂的混合物）。检测气相炸药的一般策略是基于每个人产生的特征指纹，这是由于ETS-10涂层悬臂与爆炸物发出并被周围空气扫除的目标分子之间化学反应不同而产生的。已经实施了便携式锁定放大器，以利用该阵列在便携性，减小尺寸和能耗方面的真正优势。这种低功率电子接口能够创建激励信号，并同时获得四个谐振悬臂的响应值。最终的传感平台已成功应用于痕量水平的o-MNT，PETN和RDX检测。

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