کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7124950 | 1461529 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nano-holes as standard leak elements
ترجمه فارسی عنوان
نانوذرات به عنوان عناصر نشت استاندارد
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
کنترل و سیستم های مهندسی
چکیده انگلیسی
Short tubes with diameters of the order of 200Â nm were drilled into silicon nitride (Si3N4) membranes of 200Â nm thickness by focused ion beam technology and examined as leak elements for vacuum technology applications. These nano-holes exhibit molecular flow in the pressure range from high vacuum up to 10Â kPa and can therefore be used as predictable leak elements for any non-condensable gas species. The geometrical dimensions were determined by SEM, STEM and AFM techniques. By Direct Simulation Monte Carlo method the conductances of these short tubes were calculated from the measured dimensions. The calculated conductance agreed with the value measured by comparison with a primary gas flowmeter within their respective uncertainties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 58, December 2014, Pages 335-341
Journal: Measurement - Volume 58, December 2014, Pages 335-341
نویسندگان
Vincenzo Ierardi, Ute Becker, Sarantis Pantazis, Giuseppe Firpo, Ugo Valbusa, Karl Jousten,