I-Corps: Carbon nanotube coaxial noise control

I-Corps：碳纳米管同轴噪声控制

• 批准号: 1756908
• 负责人: Andrew Barnard
• 金额: $ 5万
• 依托单位: Michigan Technological University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-10-15 至 2018-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1756908&HistoricalAwards=false
• 关键词: Corps; Carbon; nanotube; coaxial; noise

The broader impact/commercial potential of this I-Corps project is to make quiet products and systems that have pipe and duct sound transmission. Systems like automobile exhausts and intakes, building heating and ventilation systems, and fluid flow piping all transmit sound from power generating equipment to human receivers. In order to reduce the amount of noise to which people are exposed, passive and active noise control systems are incorporated in pipe and duct systems. These systems are currently large, heavy and inefficient. The application of a compact and lightweight coaxial active noise control system has potential implications on many industries where size of noise control elements constrain design. More importantly, the reduction of noise in the environment has potential health and wellness benefits for all members of society through environmental stress reduction. Reducing noise emitted from mechanical pipe and duct systems is an important step in reducing overall environmental noise exposure.This I-Corps project explores the market need for coaxial thermophones (or heat-driven solid state speaker), particularly those manufactured using carbon nanotube (CNT) thin films. The idea of a thermophone was developed as early as 1898. However, practical applications of the thermophone have not been realized. This is mainly due to lack of low heat capacity material to manufacture the thermophone. CNT thin-films enable an efficient thermophone due to their low heat capacity per unit area as well as their relatively low production cost. Current active noise control technologies rely on outdated moving coil transducer design, which limits their widespread implementation due to size, weight, cost, and performance restrictions. A coaxial thermophone transducer design reduces size and weight significantly while increasing potential noise control performance. This I-Corps national program will lead to better understanding of customer segments, value propositions, customer pain points, value chains, delivery methods, partnerships, and a minimum viable product.

该 I-Corps 项目更广泛的影响/商业潜力是制造具有管道和管道声音传输的安静产品和系统。 汽车排气和进气系统、建筑供暖和通风系统以及流体管道等系统都会将声音从发电设备传输到人体接收器。为了减少人们接触到的噪音量，在管道和管道系统中采用了被动和主动噪音控制系统。目前这些系统庞大、笨重且效率低下。紧凑、轻便的同轴有源噪声控制系统的应用对噪声控制元件尺寸限制设计的许多行业具有潜在影响。更重要的是，减少环境噪音可以通过减轻环境压力为所有社会成员带来潜在的健康和保健益处。减少机械管道和管道系统发出的噪音是减少整体环境噪音暴露的重要一步。该 I-Corps 项目探讨了同轴热听器（或热驱动固态扬声器）的市场需求，特别是那些使用碳纳米管 (CNT) 薄膜制造的热听器。热电话的想法早在1898年就已被提出。然而，热电话的实际应用尚未实现。这主要是由于缺乏低热容材料来制造热电话。碳纳米管薄膜由于单位面积热容低且生产成本相对较低，因此可以实现高效的热电偶。当前的有源噪声控制技术依赖于过时的动圈换能器设计，由于尺寸、重量、成本和性能的限制，限制了其广泛实施。同轴热电偶传感器设计显着减小了尺寸和重量，同时提高了潜在的噪声控制性能。 I-Corps 国家计划将有助于更好地了解客户群、价值主张、客户痛点、价值链、交付方法、合作伙伴关系和最低可行产品。