کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
614143 | 1454804 | 2016 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Friction anisotropy and asymmetry in self assembled monolayers
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Experiments with molecularly thin self assembled monolayers have suggested existence of friction force anisotropy and asymmetry. Here molecular dynamics simulations are used to study friction anisotropy and asymmetry between two self assembled monolayers (SAM) of n-alkanethiols [CH3(CH2)nâ1S, n=14] attached on Au (111) substrates. The simulations show the existence of friction anisotropy and asymmetry in agreement with some of the experimental works in literature. Friction shows dependence on the relative direction of sliding and monolayers tilt direction. The origin of this friction anisotropy is discussed. The friction asymmetry depends on the direction of sliding and is significant in the direction of the tilt. On this “molecular carpet” interestingly, it is easier to slide against the nap (tilt direction) than in the direction of the nap (tilt direction).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 102, October 2016, Pages 600-607
Journal: Tribology International - Volume 102, October 2016, Pages 600-607
نویسندگان
Ahmad Jabbarzadeh,