Ferroelectric Self-Assembled Monolayers as Pyroelectric Materials

作为热释电材料的铁电自组装单分子层

• 批准号: 9361602
• 负责人: Gary Robinson
• 金额: $ 6.5万
• 依托单位: Aerodyne Research Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-04-01 至 1995-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9361602&HistoricalAwards=false
• 关键词: Ferroelectric; Self; Assembled; Monolayers; Pyroelectric

9361602 Robinson This Small Business Innovation Research (SBIR) project is in the general area of analytical chemical instrumentation and specifically in the subfield of thermal detectors. Pyroelectric thermal detectors traditionally are based on inorganic ferroelectric single crystals or ferroelectric organic polymer films which are oriented in an electric field. In this Phase I study pyroelectric films will be prepared by fluorination of self assembled monolayers (SAM) of long chain alkylthiols on gold surfaces. Dipolar SAMs are expected to be stable, robust and pyroelectric. Pyroelectric coefficients and figures of merit will be determined as a function of alkylthiol chain length and degree of fluorination. If SAMs can be made with pyroelectric properties better than currently used materials, Phase II studies will be directed towards fabricating a prototype pyroelectric device. %%% Pyroelectric detectors based on fluorinated SAMs are expected to be compact, low cost, and capable of being integrated with an amplifier onto a single silicon chip and operated at room temperature. The low thermal mass and low dielectric constant of a free-standing monolayer should make its sensitivity and response time better than current polymer pyroelectric materials. ***

罗宾逊9361602 这个小企业创新研究（SBIR）项目是在分析化学仪器的一般领域，特别是在热探测器的子领域。传统的热释电热探测器是基于无机铁电单晶或铁电有机聚合物薄膜，它们在电场中取向。在第一阶段的研究中，热释电薄膜将制备的自组装单分子膜（SAM）的长链烷基硫醇在金表面的沉积。偶极自组装膜预期是稳定的、坚固的和热释电的。 热释电系数和优值将被确定为烷基硫醇链长和烷基化程度的函数。如果自组装膜的热释电性能比目前使用的材料更好，第二阶段的研究将致力于制造原型热释电器件。 %基于氟化自组装膜的热释电探测器预计结构紧凑、成本低，并且能够与放大器集成到单个硅芯片上并在室温下工作。自支撑单层的低热质量和低介电常数应使其灵敏度和响应时间优于当前的聚合物热释电材料。 ***