ANR Smart materials based on vanadium oxide thin films

对空间的更大开发促进了对生产高性能、体积小、重量小的廉价卫星的研究，从微型卫星（10-100公斤）到微型卫星（不到1公斤）不等。这种减少需要开发新型智能散热器设备（SRDs），以克服目前热控制系统在质量、表面积和功率预算方面的限制。基于热致变色方法的固态硬盘包含热发射率从高温高值被动切换到低温低值的薄膜。在这种应用中最有前途的智能材料之一是氧化钒（VO2）。在此背景下，我们提出了一个雄心勃勃的研究项目，以解决与使用先进的等离子体工艺在空间兼容衬底上合成智能多晶VO2薄膜相关的挑战。该项目将涵盖几个方面，从了解掺杂剂对金属到绝缘体转变温度和VO2薄膜发射度的作用到SRDs原型的制作及其在空间环境中的性能评估。由于需要广泛的知识来解决与基于vo2的srd开发相关的所有科学和技术挑战，我们与加拿大和法国的研究人员组成了一个具有互补专业知识的团队。NSERC/ANR联合项目提供的可能性为我们的团队提供了一个独特的机会，不仅可以为加拿大和法国的战略利益领域做出重大贡献，还可以将我们的研究整合到旨在共享知识、基础设施和HQP培训责任的战略中。为了确保这项研究给加拿大和法国带来显著的好处，我们的团队可以依靠一个主要的工业合作伙伴（MPBC）的支持。该项目将帮助MPBC成为下一代固态硬盘制造领域的未来世界领导者之一。此外，我们的建议得到了3个最终用户的支持，即加拿大的麦哲伦航空航天公司、法国的泰利斯阿莱尼亚航天公司和空中客车防务与航天公司，他们将能够将这些基于vo2的srd集成到他们未来的产品中。

Greater exploitation of space has fostered research towards the production of highly-performing cheaper satellites of small size and small weight ranging from micro- (10-100 kg) to picosatellites (less than 1 kg). This reduction requires the development of novel smart radiator devices (SRDs) to overcome the present limitations of thermal control systems in terms of mass, surface area and power budget. SRDs based on the thermochromic approach incorporate films of which the thermal emittance passively switches from a high value at high temperature to a low value at low temperature. One of the most promising smart materials for such applications is vanadium oxide (VO2). In this context, we propose an ambitious research project to tackle the challenges associated with the synthesis of smart polycrystalline VO2 thin films on space-compatible substrates using advanced plasma-based processes. This project will cover several aspects spanning from the understanding of the role of dopants on the metal-to-insulator transition temperature and on the emittance of the VO2 films to the fabrication of SRDs prototypes and their performance evaluation in space environment. Because of the wide range of knowledge required to address all the scientific and technological challenges associated to the development of VO2-based SRDs, we have formed a team with Canadian and French researchers that have complementary expertise. The possibility offered by the joint NSERC/ANR program represents a unique opportunity for our team not only to significantly contribute to a domain of strategic interest for both Canada and France, but also to integrate our research in a strategy aiming at sharing knowledge, infrastructure, and responsibilities of HQP training. To ensure a remarkable benefit of this research to Canada and France, our team can rely on the support of a major industrial partner (MPBC). This project will help MPBC to position as one of the future world leaders in the manufacturing of the next generation of SRDs. Moreover, our proposal is supported by 3 end users, namely Magellan Aerospace in Canada, and Thales Alenia Space and Airbus Defence & Space in France, who will be able to integrate these VO2-based SRDs in their future products.