Preparation and characterization of bismuth nanostructures deposited by pulsed laser ablation

被引:14
作者
Escobar-Alarcon, L. [1 ]
Morales-Mendez, J. G. [2 ]
Solis-Casados, D. A. [3 ]
Romero, S. [1 ]
Fernandez, M. [1 ]
Haro-Poniatowski, E. [2 ]
机构
[1] Inst Nacl Invest Nucl, Dept Fis, Mexico City 11801, DF, Mexico
[2] Univ Autonoma Metropolitana Iztapalapa, Dept Fis, Mexico City 09340, DF, Mexico
[3] Ctr Conjunto Invest Quim Sustentable UAEM UNAM, Toluca, Estado De Mexic, Mexico
来源
VII INTERNATIONAL CONGRESS OF ENGINEERING PHYSICS | 2015年 / 582卷
关键词
D O I
10.1088/1742-6596/582/1/012013
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
Bismuth nanostructures, from nanoparticles to quasi-percolated films, were deposited by pulsed laser ablation (PLA) on different substrates using the 355 nm line of a Nd:YAG laser. The morphology and size distribution of the obtained nanostructures were investigated, as a function of the number of ablation pulses, by high resolution electron microscopy (HRTEM) and atomic force microscopy (AFM). Deposits with a small number of pulses, 50, are formed of separated isolated particles with diameters in the range from 5 to 20 nm. Further increase in the number of pulses (>100) results in coalescence of individual particles with the formation of dendritic structures and finally, for 500 pulses, quasi-percolated Bi films are obtained. Additionally, the nanostructures formed were characterized by XPS, and Raman spectroscopy in order to determine the physical and chemical properties of the deposited material.
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页数:5
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