标题： 通过离子注入在石墨中产生的缺陷用于金纳米颗粒的自组装 显示英文标题

标题： Defects in graphite engineered by ion implantation for the self-assembly of gold nanoparticles

摘要： 缺陷工程在二维(2D)材料中对于推进气体传感、单原子催化和引导纳米粒子自组装等应用至关重要，使得能够创建具有定制功能的材料。 本研究通过扫描隧道显微镜(STM)和密度泛函理论(DFT)模拟，研究了离子注入对高度有序热解石墨(HOPG)表面的影响，以识别不同的缺陷结构。 高能重离子引起非弹性散射，增加表面损伤，而沉积到缺陷位点的金原子优先形成原子簇。 通过聚焦离子束技术，实现了空间分布缺陷的工程设计，引导纳米粒子的自组装。 这项研究突显了离子辐照在修饰HOPG表面方面的精确性，对催化、纳米技术和具有可控纳米尺度特性的功能材料的发展具有重要意义。 显示英文摘要

摘要： Defect engineering in two-dimensional (2D) materials is essential for advancing applications such as gas sensing, single-atom catalysis, and guided nanoparticle self-assembly, enabling the creation of materials with tailored functionalities. This study investigates ion implantation effects on highly ordered pyrolytic graphite (HOPG) surfaces, using scanning tunneling microscopy (STM) and density functional theory (DFT) simulations to identify distinct defect structures. High-energy heavy ions cause inelastic scattering, increasing surface damage, while gold atoms deposited onto defect sites preferentially form atomic clusters. Through focused ion beam techniques, spatially distributed defects were engineered, guiding the self-assembly of nanoparticles. This research highlights the precision of ion irradiation for modifying HOPG surfaces, with significant implications for catalysis, nanotechnology, and the development of functional materials with controlled nanoscale properties.