SBIR Phase I: Scalable Manufacturing Technology for Mobile Signal Penetrating Energy-Efficient Low-Emissivity Windows

SBIR 第一阶段：移动信号穿透节能低发射率窗户的可扩展制造技术

• 批准号: 2233675
• 负责人: Guowen Ding
• 金额: $ 27.4万
• 依托单位: LABFORINVENTION CORP
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-04-01 至 2024-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2233675&HistoricalAwards=false
• 关键词: SBIR; Phase; Scalable; Manufacturing; Technology

The broader impact/commercial potential of this Small Business Innovation Research (SBIR) Phase I project will be low-emissivity windows capable of allowing wireless signals to pass through. Presently, almost all commercial low-emissivity windows severely block mobile signals from entering buildings - a serious problem in today's world that demands fast and uninterrupted mobile connectivity. The proposed low-emissivity windows can be manufactured cost-competitively and significantly reduce the costs of installing indoor cellular aids such as routers and antennas. This technology will accelerate the further adoption of low-emissivity windows to reduce greenhouse gas emissions as well as support the further deployment of 5G technologies.This SBIR Phase I project proposes to investigate scalable manufacturing of mobile, signal transmissive, low-emissivity windows by using lithographic deposition of photoresist structures on the glass substrate prior to low-emissivity vacuum coating. The project proposes to deposit photoresist structures with non-conductive spacers on glass substrate, reducing the low-emissivity coating’s electric conductivity that prevents wireless signal passthrough. Dielectric layers will be deposited over the sidewalls to form protective layers over the low-emissivity coatings to protect against oxidative corrosion. The width of the photoresist structures will range between 2 to 5 micrometers to minimize the degradation of low-emissivity coatings to less than 2%, to maintain thermal performance. After low-emissivity coating deposition, the non-planar spacers will subsequently collapse into the photoresist layer restoring low-emissivity coatings to their original planar position thereby rendering the photoresist structure invisible to the eye. Furthermore, the team will explore additional photoresist designs to address potential lighting diffractions that may form on the finished window.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这个小型企业创新研究（SBIR）第一阶段项目的更广泛的影响/商业潜力将是能够允许无线信号通过的低辐射窗户。目前，几乎所有的商业低辐射窗户都严重阻碍了移动的信号进入建筑物-这在当今世界是一个严重的问题，需要快速和不间断的移动的连接。所提出的低发射率窗户可以以具有成本竞争力的方式制造，并显著降低安装室内蜂窝辅助设备（如路由器和天线）的成本。该技术将加速低辐射窗户的进一步采用，以减少温室气体排放，并支持5G技术的进一步部署。该SBIR第一阶段项目建议通过在低辐射真空镀膜之前在玻璃基板上光刻沉积光刻胶结构，研究移动的信号传输低辐射窗户的可扩展制造。该项目建议在玻璃基板上存款具有非导电间隔物的光致抗蚀剂结构，降低低辐射涂层的导电性，从而防止无线信号通过。介电层将沉积在侧壁上，以在低发射率涂层上形成保护层，以防止氧化腐蚀。光致抗蚀剂结构的宽度将在2至5微米之间的范围内，以使低发射率涂层的劣化最小化至小于2%，以保持热性能。在低发射率涂层沉积之后，非平面间隔物将随后塌陷到光致抗蚀剂层中，从而将低发射率涂层恢复到其原始平面位置，从而使光致抗蚀剂结构对眼睛不可见。此外，该团队还将探索更多的光刻胶设计，以解决可能在成品窗户上形成的潜在照明衍射问题。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。