NDLI: Generation of defects in model lubricant monolayers and their contribution to energy dissipation in friction

Content Provider	Springer Nature Link
Author	Salmeron, Miquel
Copyright Year	2001
Abstract	The structural, mechanical (friction) and spectroscopic properties of model lubricant films made of self-assembled and Langmuir–Blodgett monolayers on quartz, mica and gold have been investigated with atomic force microscopy, the surface forces apparatus and sum-frequency generation. In these films, the molecules tend to form densely packed structures, with the alkane chains mostly vertical and parallel to each other. The SFG results suggest that under moderate pressures of a few tens of MPa, the methyl end group of the alkane chains is rotated to accommodate a terminal gauche distortion. The molecule, however, retains its upright close-packed structure with a lattice periodicity when ordered, which can be resolved by AFM. At pressures above 0.1 GPa, changes in the form of collective molecular tilts take place that lower the height of the monolayer. Only certain angles of tilt are allowed that are explained by the interlocking of methylene units in neighboring chains. The discrete angular tilts are accompanied by increases in friction. A model based on the van der Waals attractive energy between chains is used to explain the stability of the films and to estimate the cohesive energy changes during tilt and, from that, the increases in friction force.
Starting Page	69
Ending Page	79
Page Count	11
File Format	PDF
ISSN	10238883
Journal	Tribology Letters
Volume Number	10
Issue Number	1-2
e-ISSN	15732711
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2001-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Surfaces and Interfaces, Thin Films Mechanics
Content Type	Text
Resource Type	Article
Subject	Surfaces, Coatings and Films Mechanics of Materials Mechanical Engineering Surfaces and Interfaces

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Chemical Control of Friction: Mixed Lubricant Monolayers

Periodicities in the properties associated with the friction of model self-assembled monolayers

The Dependence of Energy Dissipation on the Elastic Energy Density of Friction Pairs in Hard Coating Films

Lubricant thickness effects on friction between Pd(100) surfaces

An energy-based model for the wear of UHMWPE

The Effect of Metal 8-Hydroxyquinolinates as Lubricant Additives on the Friction Process

Optimal Energy Dissipation in Sliding Friction Simulations

Vapor Lubricant Transport in MEMS Devices

Solid Lubricant Coatings: Recent Developments and Future Trends

Generation of defects in model lubricant monolayers and their contribution to energy dissipation in friction

Similar Documents

Chemical Control of Friction: Mixed Lubricant Monolayers

Periodicities in the properties associated with the friction of model self-assembled monolayers

The Dependence of Energy Dissipation on the Elastic Energy Density of Friction Pairs in Hard Coating Films

Lubricant thickness effects on friction between Pd(100) surfaces

An energy-based model for the wear of UHMWPE

The Effect of Metal 8-Hydroxyquinolinates as Lubricant Additives on the Friction Process

Optimal Energy Dissipation in Sliding Friction Simulations

Vapor Lubricant Transport in MEMS Devices

Solid Lubricant Coatings: Recent Developments and Future Trends

Generation of defects in model lubricant monolayers and their contribution to energy dissipation in friction