کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5360427 1503693 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural characterization of nanoparticles-assembled titanium dioxide films produced by ultrafast laser ablation and deposition in background oxygen
ترجمه فارسی عنوان
خصوصیات ساختاری نانوذرات - پلیمرهای دی اکسید تیتانیوم مونتاژ شده توسط اکسیژن پایه تولید شده توسط برش لیزر فوق العاده و رسوب
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی

Ultrafast laser ablation of titanium dioxide and deposition of nanoparticles-assembled films in oxygen ambient gas at pressures going from high-vacuum up to several mbar is investigated. We identify various regimes of the plumes propagation into the background gas as well as of the material deposition rate. These reflect on the structural characteristics of the nanoparticles-assembled films: the film morphology changes from a structure with glue-like nanoparticulates, at low pressure, to a highly porous assembly of individual nanoparticles, at larger pressure. Our findings indicate that background gas pressure provides an interesting key for additional control on the structural characteristics of oxide nanostructures produced by femtosecond laser deposition.

► Ultrafast laser ablation of titanium dioxide. ► Elaboration of titanium dioxide nanostructures by femtosecond pulsed laser deposition. ► Structural and morphological variation of TiO2 nanoparticles-assembled films with oxygen pressure in femtosecond pulsed laser deposition. ► Changes of nanoparticles-assembled titanium dioxide films by annealing treatments.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 270, 1 April 2013, Pages 307-311
نویسندگان
, , , , , , , , , , , ,