Nanomaterials for Effective Coatings with Selective Light Absorption

开发有效的吸收红外（IR）辐射的涂层，例如用于红外签名管理，仍有未满足的需求。纳米粒子具有独特的光电特性，特别是非球形纳米粒子已被证明是光谱选择性吸收剂，其中电磁吸收带强烈依赖于纳米粒子的几何形状。然而，以可控和可复制的形式合成具有所需几何形状和性能的纳米颗粒并进行大规模生产是具有挑战性的。该项目旨在开发包含银纳米棒（AgNRs）的纳米复合涂层，以选择性地吸收红外电磁波段。化学将首先优化纳米颗粒的形成与可控的几何形状。为大规模生产agnr，将进行连续流反应器的设计和建造。随后，将制定并评估嵌入agrs的纳米复合涂层作为红外阻滞剂。该项目将由工程和化学联合开展，采用跨学科的方法，利用不同学科的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.