Optical reflectivity study of silicon ion implanted poly(methyl methacrylate)

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• 作者：Georgi B. Hadjichristov ; Ivan L. Stefanov ; Bojana I. Florian ; Gergana D. Blaskova ; Victor G. Ivanov ; Eric Faulques
• 关键词：Ion implanted polymers ; Optical properties ; Diffuse reflectivity ; Specular reflectivity ; Poly(methyl methacrylate) (PMMA) ; Materials science
• 刊名：Applied Surface Science
• 出版年：2009
• 出版时间：15 November 2009
• 年：2009
• 卷：256
• 期：3
• 页码：779-786
• 全文大小：613 K

文摘

The optical reflectivity (both specular and off-specular) of poly(methyl methacrylate) (PMMA) implanted with silicon ions (Si⁺) at energy of 50 keV, is studied in the spectral range 0.25–25 μm. The effect from the Si⁺ implantation on the reflectivity of two PMMA materials is examined in the dose range from 10¹⁴ to 10¹⁷ ions/cm² and is linked to the structure formed in this ion implanted plastic. As compared to the pristine PMMA, an enhancement of the reflectivity of Si⁺ implanted PMMA is observed, that is attributed to the modification of the subsurface region of PMMA upon the ion implantation. The ion-produced subsurface organic interface is also probed by laser-induced thermo-lens.