Design of advanced sensing materials

先进传感材料的设计

• 批准号: 0452045
• 负责人: Jiri Janata
• 金额: --
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-03-01 至 2011-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0452045&HistoricalAwards=false
• 关键词: Design; advanced; sensing; materials

Professors Jiri Janata and Miroslawa Josowicz of Georgia Tech University are supported by the Analytical and Surface Chemistry program to work on "chemically-sensitive field-effect transistors" (CHEMFET). The idea is to tune organic semiconductors for optimization of their electron transfer properties for use as gas sensors and novel devices for information processing. The group has previously utilized chemical, electrochemical and photochemical means to change the Fermi level of the solid, with most studies focusing on polyaniline. The group is now pursuing other properties needed in a sensor, for example, long term stability and fast response time of the selective layer. The use of additional secondary dopants is being explored, including ionic liquids. A magnetic quartz crystal microbalance (MQCM) is being developed to simultaneously monitor changes in magnetic spin density and the mass dopant uptake by the solid. Organic electronics is a new technological area that offers a wide range of applications not feasible with conventional silicon electronics. However, understanding and controlling the chemical environmental factors is critical for both solid-state sensors and organic electronics intended for signal and information processing. Additionally, new chemical sensors are required to detect ambient vapors. Inexpensive, long-lasting and easily manufactured gas sensors are needed in the interest of national security, for example.

格鲁吉亚理工大学的Jiri Janata和Miroslawa Josowicz教授得到了分析和表面化学项目的支持，从事“化学敏感场效应晶体管”（CHEMFET）的研究。 这个想法是调整有机半导体，优化其电子转移性能，用作气体传感器和信息处理的新型器件。 该小组以前曾利用化学，电化学和光化学手段来改变固体的费米能级，大多数研究集中在聚苯胺上。 该小组现在正在追求传感器所需的其他特性，例如选择层的长期稳定性和快速响应时间。 正在探索使用额外的二次掺杂剂，包括离子液体。 一种磁性石英晶体微天平（MQCM）正在开发中，同时监测磁自旋密度和质量掺杂剂的固体吸收的变化。有机电子是一个新的技术领域，提供了广泛的应用与传统的硅电子不可行。 然而，理解和控制化学环境因素对于固态传感器和用于信号和信息处理的有机电子器件都是至关重要的。 此外，需要新的化学传感器来检测环境蒸汽。 例如，为了国家安全的利益，需要廉价、持久和易于制造的气体传感器。