“温度自补偿型”应力传感气凝胶材料的可控制备

项目名称： “温度自补偿型”应力传感气凝胶材料的可控制备

项目编号： No.21504104

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 何伟娜

作者单位： 上海交通大学

项目金额： 21万元

中文摘要： 传感器的智能化、集成化和应用环境多样化的发展趋势，对现有传感材料提出了更高的要求。随着探索领域的拓展，应力传感的使用环境日益多样化和复杂化，不可避免的需要对现有传感器进行反复多次的“温度补偿”，带来了传感精度下降、难度提高和工作量加大等多方面问题。所以，亟待发展一种新型“温度自补偿型”应力传感技术。本项目首次提出并采用“初级网络-共形生长”（Incipient-Network Conformal-Growth，INCG）技术，通过具有特殊“核-壳”骨架结构、原位编织的3D凝胶网络的可控构建，将表现出正温度系数（PTC）的金属和负温度系数（NTC）的导电高分子/半导体材料进行复合，旨在：（1）赋予复合材料较好的结构弹性；（2）实现程序化调控下的“低/零温度系数”应力传感材料的可控制备，在此基础上实现一种全新的“温度自补偿型”压阻式应力传感器的应用开发。

中文关键词： 有机-无机杂化材料；零温度系数；多孔材料；程序化制备；应力传感

英文摘要： Integrated, intelligent and extensive-reliable stress sensors are highly desirable in fabrications of more integrated and intelligent devices in the near future. However, because of the temperature drift of the piezoresistive materials caused by the temperature-dependent electrical resistances and the volatile application environments, the temperature-compensation system has to be involved and calibrated frequently in order to determine the stress being measured accurately, which making the measurements more complex and applicable restricted. A new self-temperature-compensated pressure sensing technology is proposed in this project. In order to obtain an ideal sensing material with nearly-zero temperature coefficient resistance (TCR) for self-temperature-compensated pressure sensors, we proposed an Incipient Network Conformal Growth (INCG) technology to prepare organic-inorganic hybrid and elastic porous materials. The electrical and mechanical properties of the sensing materials will be tailored by changing the syntheses conditions.

英文关键词： Organic-inorganic hybrid materials;Nearly-zero coefficient ;Porous materials;Programmed syntheses ;Stress sensor