کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1667331 | 1008849 | 2012 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural modifications and enhanced Raman scattering from multiwalled carbon nanotubes grown on titanium coated silicon single crystals
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کلمات کلیدی
plasmonic effects - اثرات پلاسمونیکTitanium - تیتانیومChemical vapor deposition - رسوب بخار شیمیایی یا انباشت به روش تبخیر شیمیاییMicro Raman spectroscopy - طیف سنجی میکرو رامانHigh Resolution Transmission Electron Microscopy - میکروسکوپ الکترونی با وضوح بالاMulti-wall carbon nanotubes - نانولوله های کربنی چند دیواری
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Multiwalled carbon nanotubes (MWCNTs) were grown on 10Â nm iron (Fe) film by microwave plasma enhanced chemical vapor deposition using titanium (Ti) film as an interlayer. The Ti interlayer of thickness 5Â nm-20Â nm was sandwiched between Fe and silicon (Si) using thermal evaporation. Enhanced Raman response was observed in MWCNTs with increasing Ti interlayer thickness. This was related with the plasmonic effects occurring at the interface of the CNTs and the metallic support in a three layer system (Ti-Fe-CNTs). The increase in the G mode optical strength is attributed to surface enhanced resonance Raman scattering. Moreover, the increase in the D-mode and 2D-mode intensity is explained on the basis of double resonance effects. The crystallinity in the samples was calculated using ID/IG ratio. It was found that that ID/IG ratio decreases in three layer system with increasing Ti interlayer thickness as compared to a two layer (Fe-CNTs) system as reported earlier.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 520, Issue 6, 1 January 2012, Pages 1902-1908
Journal: Thin Solid Films - Volume 520, Issue 6, 1 January 2012, Pages 1902-1908
نویسندگان
Himani Sharma, A.K. Shukla, V.D. Vankar,