基于纳米金MSEF效应的爆炸物光纤传感系统关键技术研究

项目名称： 基于纳米金MSEF效应的爆炸物光纤传感系统关键技术研究

项目编号： No.61205081

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 信息四处

项目作者： 初凤红

作者单位： 上海电力学院

项目金额： 25万元

中文摘要： 高灵敏度、低成本、稳定、快速的爆炸物检测技术是当前国内外安全领域的研究热点。本项目基于荧光猝灭原理，利用纳米金表面增强荧光效应，采用荧光指示剂荧光强度和寿命同时探测的方法，研究用于硝基芳烃类爆炸物检测的塑料光纤传感系统。建立纳米金表面增强荧光效应的理论模型，深入研究纳米金尺寸、形状、二氧化硅壳层厚度等因素对荧光指示剂荧光强度的影响。实验研究含有纳米金和荧光指示剂的溶胶-凝胶敏感膜制备工艺。探索计算荧光寿命的相关算法和软件实现，高灵敏度传感头的优化设计、制备等关键问题。项目旨在根据国家反恐需要，对基于纳米金表面增强荧光效应的硝基芳烃类爆炸物检测系统的传感机理、检测手段、整个传感系统的设计及优化进行有益探索，开发性能优良的爆炸物检测系统。项目研究将为基于贵金属表面增强荧光效应的光纤化学传感器提供理论依据和实验基础，并对反恐和环境保护产生重大的社会效益。

中文关键词： 爆炸物；光纤传感；纳米金；表面增强荧光；

英文摘要： Explosives detecting system with high sensitivity, low cost, high stability and fast detection rate has become an active research topic in security area at home and abroad. Plastic optical fiber sensing system which is used to detect nitroaromatic explosives based on fluorescence quenching method is proposed in this project. Both fluorescence intensity and lifetime of the indictor will be detected and the metal surface enhanced fluorescence (MSEF) effect will be used in this project. Theoretical model of MSEF effect will be built, the effect of the size, shape of the gold nanoparticle and shell thickness of SiO2 on the indictor's fluorescence intensity will be analyzed based on this model. The sensing material which gold nanoparticles and fluorescence indictor are contained will be fabricated by sol-gel method. The algorithm of the fluorescence lifetime and software implementation, optimization design and fabrication of sensor heads with high sensitivity will be explored. Based on above work an explosives sensing system with excellent performance will be developed and serve for the counter-terrorism area. The achievements of this project will provide theoretical and experimental basis for the MSEF based chemical optical fiber sensor and social benefit to counter-terrorism and environment protection.

英文关键词： Explosives；Optical Fiber Sensing；Gold Nanoparticle；Surface Enhanced Fluorescence；