Design and Fabrication of a Micro Flagellar Motor Based Dynamo

基于微型鞭毛电机的发电机的设计与制造

• 批准号: 0401196
• 负责人: Steve Tung
• 金额: --
• 依托单位: University of Arkansas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-05-01 至 2008-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0401196&HistoricalAwards=false
• 关键词: Design; Fabrication; Micro; Flagellar; Motor

We propose to explore a novel biologically inspired power supply that has both a high power density and a small package size. The micro flagellar motor dynamo or FMD is a microscale hybrid system fabricated from MEMS devices and a non-pathogenic, genetically engineered strain of Escherichia coli (KAF95) flagellar motor. Thisflagellar motor is a nanoscale molecular motor capable of a large rotary torque and high power output (relative to other molecular motors). When tethered down to a microfabricated surface, the motor turns at a stable rotational rate, providing a natural mechanical power generator. The FMD converts this mechanical power into an electrical one by combining the flagellar motor with a copper microcoil and micro ferromagnetic beads. With the ferromagnetic beads attached, the tethered motor generates a rotating magnetic field that induces a voltage in the stationary microcoil due to Faraday's Law. Based on a preliminary study, this induced voltage can potentially provide the same power density level as that of a methanol fuel cell.Intellectual Merit of Proposed ActivityThe proposed project is an important step towards the development of an effective electrical power supply for current and future MEMS and NEMS. It uniquely combines the technologies in microbiology and microfabrication to design and fabricate a hybrid biological/artificial power system that is both compact and efficient.Broader Impacts of Proposed ActivityThe proposed project will generate significant educational opportunities for students at both the college and K-12 levels. The UA graduate and undergraduate students supported under this effort will benefit greatly from diversified experience in microbiology and microfabrication. The K-12 students and teachers recruited for the project will become more aware of MEMS and microbiology, which can lead to more K-12 students pursuing science and engineering as a career path. The PI will actively recruit underrepresented students through his current role as a mentor for women and minority engineering students. He will also expand his activities in NSF-RET programs to involve more minority K-12 teachers.

我们建议探索一种新型的生物启发电源，它具有高功率密度和小封装尺寸。微型鞭毛马达发电机（FMD）是由MEMS器件和非致病性大肠杆菌（KAF95）鞭毛马达基因工程菌株制成的微型混合系统。这种鞭毛马达是一种纳米级分子马达，具有大的旋转扭矩和高功率输出（相对于其他分子马达）。当被拴在一个微加工的表面上时，马达以稳定的转速转动，提供一个天然的机械发电机。FMD通过将鞭毛马达与铜微线圈和微铁磁珠结合起来，将这种机械动力转化为电力。随着铁磁珠的附着，系住的电机产生一个旋转磁场，根据法拉第定律，在静止的微线圈中感应电压。根据一项初步研究，这种感应电压可能提供与甲醇燃料电池相同的功率密度水平。提议活动的智力价值提议项目是为当前和未来的MEMS和NEMS开发有效电力供应的重要一步。它独特地结合了微生物学和微加工技术，设计和制造了一种紧凑高效的生物/人工混合动力系统。拟议活动的更广泛影响拟议项目将为大学和K-12级别的学生提供重要的教育机会。在这项努力下，亚利桑那大学的研究生和本科生将从微生物学和微加工方面的丰富经验中受益匪浅。该项目招募的K-12学生和教师将更加了解MEMS和微生物学，这可以引导更多的K-12学生将科学和工程作为职业道路。PI将通过他目前作为女性和少数族裔工程学生导师的角色，积极招募代表性不足的学生。他还将扩大他在NSF-RET项目中的活动，让更多的少数族裔K-12教师参与进来。