Sustained smooth dynamics in short-sleeved nanobearings based on double-walled carbon nanotubes
We carry out a molecular dynamics study of nanobearings based on double-walled carbon nanotubes with a short rotating outer tube. A (4, 4)/(9, 9) bearing configuration shows peculiar stabilization of rotational motion at certain values of angular velocities. The observed trend is found at those valu...
Saved in:
Main Authors: | , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2011
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/92319 http://hdl.handle.net/10220/6919 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-92319 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-923192023-07-14T15:53:02Z Sustained smooth dynamics in short-sleeved nanobearings based on double-walled carbon nanotubes Shenai, Prathamesh Mahesh Ye, Jun Zhao, Yang School of Materials Science & Engineering DRNTU::Engineering::Materials::Nanostructured materials We carry out a molecular dynamics study of nanobearings based on double-walled carbon nanotubes with a short rotating outer tube. A (4, 4)/(9, 9) bearing configuration shows peculiar stabilization of rotational motion at certain values of angular velocities. The observed trend is found at those values of initial angular velocities (in the current context, 0.8–1.5 rad ps − 1) which denote a transitional regime between nearly frictionless operation at low initial angular speeds and decaying performance at high initial angular velocities. With the use of detailed 'principal components analysis', we find that the energy dissipation occurs mainly due to the excitation of wavy modes in the inner tube of the bearing. It is also proposed that wavy deformation is facilitated by the actuation of axial translation of the outer tube, which acts as an energy channelling mode. Hence, we find that the absence of dissipative wavy modes results in sustained smooth rotational dynamics of the nanobearing at low temperature. Accepted version 2011-07-19T03:35:17Z 2019-12-06T18:21:17Z 2011-07-19T03:35:17Z 2019-12-06T18:21:17Z 2010 2010 Journal Article Shenai, P. M., Ye, J. & Zhao, Y. (2010). Sustained smooth dynamics in short-sleeved nanobearings based on double-walled carbon nanotubes. Nanotechnology, 21. https://hdl.handle.net/10356/92319 http://hdl.handle.net/10220/6919 10.1088/0957-4484/21/49/495303 en Nanotechnology © 2010 Institute of Physics. This is the author created version of a work that has been peer reviewed and accepted for publication by Nanotechnology, Institute of Physics. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1088/0957-4484/21/49/495303]. 23 p. application/pdf |
institution |
Nanyang Technological University |
building |
NTU Library |
continent |
Asia |
country |
Singapore Singapore |
content_provider |
NTU Library |
collection |
DR-NTU |
language |
English |
topic |
DRNTU::Engineering::Materials::Nanostructured materials |
spellingShingle |
DRNTU::Engineering::Materials::Nanostructured materials Shenai, Prathamesh Mahesh Ye, Jun Zhao, Yang Sustained smooth dynamics in short-sleeved nanobearings based on double-walled carbon nanotubes |
description |
We carry out a molecular dynamics study of nanobearings based on double-walled carbon nanotubes with a short rotating outer tube. A (4, 4)/(9, 9) bearing configuration shows peculiar stabilization of rotational motion at certain values of angular velocities. The observed trend is found at those values of initial angular velocities (in the current context, 0.8–1.5 rad ps − 1) which denote a transitional regime between nearly frictionless operation at low initial angular speeds and decaying performance at high initial angular velocities. With the use of detailed 'principal components analysis', we find that the energy dissipation occurs mainly due to the excitation of wavy modes in the inner tube of the bearing. It is also proposed that wavy deformation is facilitated by the actuation of axial translation of the outer tube, which acts as an energy channelling mode. Hence, we find that the absence of dissipative wavy modes results in sustained smooth rotational dynamics of the nanobearing at low temperature. |
author2 |
School of Materials Science & Engineering |
author_facet |
School of Materials Science & Engineering Shenai, Prathamesh Mahesh Ye, Jun Zhao, Yang |
format |
Article |
author |
Shenai, Prathamesh Mahesh Ye, Jun Zhao, Yang |
author_sort |
Shenai, Prathamesh Mahesh |
title |
Sustained smooth dynamics in short-sleeved nanobearings based on double-walled carbon nanotubes |
title_short |
Sustained smooth dynamics in short-sleeved nanobearings based on double-walled carbon nanotubes |
title_full |
Sustained smooth dynamics in short-sleeved nanobearings based on double-walled carbon nanotubes |
title_fullStr |
Sustained smooth dynamics in short-sleeved nanobearings based on double-walled carbon nanotubes |
title_full_unstemmed |
Sustained smooth dynamics in short-sleeved nanobearings based on double-walled carbon nanotubes |
title_sort |
sustained smooth dynamics in short-sleeved nanobearings based on double-walled carbon nanotubes |
publishDate |
2011 |
url |
https://hdl.handle.net/10356/92319 http://hdl.handle.net/10220/6919 |
_version_ |
1772826777525157888 |