TY - JOUR A2 - Plain, Jerome AU - Deng, Zechao AU - Chu, Lizhi AU - Ding, Xuecheng AU - Qin, Aili AU - Fu, Guangsheng AU - Wang, Yinglong PY - 2014 DA - 2014/03/30 TI - Influence of Gas Sort on the Nucleation Region Width of Si Nanocrystal Grains Prepared by Pulsed Laser Ablation SP - 760712 VL - 2014 AB - We have calculated the nucleation region (NR) location of Si nanocrystal grains prepared by pulsed laser ablation (PLA) with fluence of 4 J/cm2 in 10 Pa gas at room temperature, and ambient gases were He, Ne, and Ar, respectively. Results of calculation indicated that NR width in Ne gas was narrowest, while it was widest in He gas. Maximum mean size of grains deposited on substrates under ablated spot, which were placed horizontally, was the smallest in Ne gas. It would be attribute to more effective energy transfer during the process of collision when atomic mass of Si and ambient gas Ne are more close to each other. In this work, an additional gas flow with the same element as ambient gas was introduced, which is vertical to the plume axis at different lateral positions above ablated spot. SN - 2314-484X UR - https://doi.org/10.1155/2014/760712 DO - 10.1155/2014/760712 JF - Journal of Nanoparticles PB - Hindawi Publishing Corporation KW - ER -