کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1891565 1043895 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nano- and micro-fabrications of polystyrene having atactic and syndiotactic structures using focused ion beams lithography
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم تشعشع
پیش نمایش صفحه اول مقاله
Nano- and micro-fabrications of polystyrene having atactic and syndiotactic structures using focused ion beams lithography
چکیده انگلیسی

Micro- and nano-fabrications of polystyrene (PS) having the atactic and syndiotactic structures were carried out with direct maskless etching using focused ion beam (FIB). Micro- and nano-scale structures were obtained with selective beam and material conditions avoiding the beam-heating and charge-up effects. The etching rates were different between atactic and syndiotactic PS. The rate of fabrication for syndiotactic PS shows higher than that of atactic one. Moreover, the direct etching was influenced by the molecular weight. The etching rate for the lower molecular weight became the faster. The FIB direct etching proceeds through the two steps (decomposition and desorption (outgas)). Both decomposition and desorption are influenced by both conformation (morphology) and configuration (stereoregularity). Furthermore, the beam profiles and fluence play the important roles to perform the nano-fabrication of PS.


► Nano-fabrication of various polystyrene (PS) were studied by ion beam lithography.
► Fine structures of atactic and syndiotactic PS were obtained by direct etching.
► Etching rate of syndiotactic PS shows higher than that of atactic one.
► Direct etching was influenced by the molecular weight of atactic PS.
► Beam profiles and fluence play important roles to perform the nano-fabrication.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 81, Issue 5, May 2012, Pages 584–588
نویسندگان
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