作为一个崭新的等离子体研究分支，利用等离子体-液体相互作用来合成金属纳米粒子已吸引了大量的注意。其合成过程简单、低值并且高速，因此有望于将来成为传统液相合成法的替代者。尽管在此合成法方面的研究已取得了许多进展，但迄今为止，合成机制的细节仍不明晰，从而限制了对合成过程的有效调制；另外，与金属纳米粒子性能紧密相关的粒子尺寸及形状控制问题依然是此合成法进一步应用和开发的瓶颈。本项目将基于我们在等离子体-液体相互作用领域积累的研究经验，采用多种液相和等离子体分析方法，不仅对液相中的演化进行深入的研究，同时也对等离子体本身以及等离子体-液体界面进行探测，期望揭示潜在的详细合成机制，最终实现快速、有效地合成尺寸及形状可控的金属纳米粒子。本研究的实现将不仅大大降低合成的费用、提高所合成纳米粒子的性能，具有重大的经济效益，而且可以增进对等离子体-液体系统的深入理解，具有重要的科学意义。

As a new branch of plasma research, the metal nanoparticles (NPs) synthesis by plasma-liquid interactions (PLIs) attracts much attention. Because the synthesis process is simple, low cost, and rapid, it is expected that the PLI method can be an alternative for the conventional solution-based synthesis in the future. Although there are many progresses in the development of the PLI-based NP syntheses, up to date, the details of synthesis mechanism are still not clear, which limits the efficient tailoring of the synthesis process. In addition, the size- and shape-controlled synthesis of NPs also remains absent, resulting in a bottleneck for the further development and applications of the synthesized NPs, since the physical and chemical properties of NPs are closely related to their sizes and shapes. In this project, based on our research in the PLIs, we will investigate not only the solution evolution, but also the processes in the bulk plasma and the plasma-liquid interface by using several liquid and plasma diagnostic tools. We aim to finally disclose the underlying secrets in the PLI-based synthesis, and realize the size- and shape-controlled rapid synthesis of metal NPs from the PLIs. The implementation of this project will produce great influence on the practical applications of metal NPs by much decreasing the cost and promoting the NPs’ properties. Moreover, many scientific issues can benefit from the comprehensive understanding of the PLIs.