کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1419951 986073 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Laser ablation of diamond particles suspended in ethanol: Effective formation of long polyynes
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Laser ablation of diamond particles suspended in ethanol: Effective formation of long polyynes
چکیده انگلیسی

Polyynes were synthesized by laser ablation of diamond particles with various sizes suspended in ethanol. Chain length distributions and total yields of polyynes produced were compared with those produced from graphitized diamond particles and graphite particles. The relative amounts of long polyynes such as C14H2 and C16H2 produced from diamond particles were found to be larger than those from graphitized diamond particles and graphite particles. From the change of the chain length distribution with the laser irradiation time, it is concluded that the long polyynes are produced directly from diamond particles at the initial stage of ablation. Furthermore, the total yield of polyynes was found to increase with the size of diamond particles and decrease as their graphitization proceeds. Possible mechanisms of these results are discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 44, Issue 3, March 2006, Pages 522–529
نویسندگان
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