当前位置: X-MOL 学术Int. J. Miner. Metall. Mater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Non-spherical aluminum nanoparticles fabricated using picosecond laser ablation
International Journal of Minerals, Metallurgy and Materials ( IF 4.8 ) Pub Date : 2020-07-13 , DOI: 10.1007/s12613-020-2032-1
A. Brahma Swamulu , S. Venugopal Rao , G. Krishna Podagatlapalli

We report the picosecond laser ablation of aluminum targets immersed in a polar organic liquid (chloroform, CHCl3) with ∼2 ps laser pulses at an input energy of ∼350 µJ. The synthesized aluminum nanoparticles exhibited a surface plasmon resonance peak at ∼340 nm. Scanning electron microscopy images of Al nanoparticles demonstrated the spherical morphology with an average size of (27 ± 3.6) nm. The formation of smaller spherical Al nanoparticles and the diminished growth could be from the formation of electric double layers on the Al nanoparticles. In addition to spherical aluminum nanoparticles, triangular/pentagonal/hexagonal nanoparticles were also observed in the colloidal solution. Field emission scanning electron microscopy images of ablated Al targets demonstrated laser induced periodic surface structures (LIPSSs), which were the high spatial frequency LIPSSs (HSF-LIPSSs) since their grating period was ∼280 nm. Additionally, coarse structures with a period of ∼700 nm were observed.



中文翻译:

使用皮秒激光烧蚀制备的非球形铝纳米颗粒

我们报告了皮秒激光烧蚀铝靶材浸入极性有机液体(氯仿,CHCl 3)的激光能量约为2 ps,输入能量约为350 µJ。合成的铝纳米粒子在〜340 nm处显示出表面等离子体共振峰。铝纳米粒子的扫描电子显微镜图像显示出球形形态,平均大小为(27±3.6)nm。较小的球形Al纳米颗粒的形成和生长减少可能是由于在Al纳米颗粒上形成了双电层。除了球形铝纳米颗粒,在胶体溶液中还观察到了三角形/五边形/六边形纳米颗粒。烧蚀的Al靶材的场发射扫描电子显微镜图像显示出激光诱导的周期性表面结构(LIPSSs),其为高空间频率的LIPSSs(HSF-LIPSSs),因为它们的光栅周期为〜280nm。另外,

更新日期:2020-07-13
down
wechat
bug