Nanomaterials for Effective Coatings with Selective Light Absorption

开发吸收红外(IR)辐射的有效涂层的需求尚未得到满足，例如，用于IR特征管理。纳米粒子具有独特的光电性质，特别是非球形的纳米粒子是一种光谱选择性吸收材料，其电磁吸收带强烈依赖于纳米粒子的几何形状。然而，要以可控和可重现的形式合成具有所需几何结构和性质的纳米颗粒，并进行大规模生产是具有挑战性的。本项目旨在开发含有银纳米棒(AgNRs)的纳米复合涂层，以选择性地吸收红外电磁波段。首先将优化化学成分，以形成几何形状可控的纳米颗粒。将进行连续流动反应器的设计和建造，以实现AgNRs的大规模生产。然后，将配制AgNRs包埋纳米复合涂层，并将其作为IR阻滞剂进行评估。这个项目将由工程学和化学通过一种跨学科的方法联合进行，利用跨学科的不同专业知识和独特的基础设施。

There are unmet needs to develop effective coatings to absorb infra-red (IR) radiation, e.g., for IR signature management. With unique optoelectronic properties, nanoparticles especially in non-spherical shape have demonstrated to be spectral selective absorbers, where the electromagnetic absorption bands strongly depends on nanoparticles' geometries. However, it is challenging to synthesise such nanoparticles with desired geometries and properties in a controllable and reproducible format, and with large-scale production. This project aims to develop nanocomposite coatings incorporating silver nanorods (AgNRs) to selectively absorb IR electromagnetic bands. Chemistries will first be optimised for nanoparticle formation with controllable geometries. Design and construction of continuous-flow reactors will be carried out for large-scale production of AgNRs. AgNRs-embedded nanocomposite coatings will then be formulated and evaluated as IR blockers. This project will be conducted jointly by Engineering and Chemistry through an interdisciplinary approach drawing on diverse expertise and unique infrastructure available across disciplines.