study nanotribology

1. Paper Presentation On:
“A CRITICAL REVIEW OF
NANOTRIBOLOGY”
Present on:
1-Mohammad Aamir
(Mechanical Engineering
Department)
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2. CONTENTS
1.INTRODUCTION
2. TECHNIQUES TO STUDY OF
NANOTRIBOLOGY
3. FRICTION FORCE
4.WEAR
5. NANOLUBRICATION
6.NEED OF NANOTRIBOLOGY
7.APPLICATIONS
8.CONCLUSION
9.REFERENCES

3. INTRODUCTION
•Nanotribology is study of friction, wear & lubrication at nanoscale.
•It is sub-area of tribology.
•It describe how two surfaces behave in relative moment & what practical
processes are involved.
•It can help to increase the energy efficiency of machines and at the same time
reduce the cost of material used and maintenance.
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4. TECHNIQUES TO STUDY NANOTRIBOLOGY
•Nanotribology widely uses many new instruments designed over the last
50 years, such as
SFA (Surface Force Apparatus)
STM (Scanning Tunneling Microscope)
AFM (Atomic Force Microscope)
FFM (Friction Force Microscope)
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5. FRICTION FORCE
It is force is the resistance encountered when one body moves relative to
another body with which it is in contact.
•After zooming at very high magnification.
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6. WEAR
 Types of wear
 Abrasive wear
 Frictional wear / Adhesive wear
 Surface fatigue
 Contact fatigue

7. NANOLUBRICATION
Lubrication at nanoscale requires lubricant molecules
which are
Nonvolatile
 Oxidation
Temperature Resistant
Good Adhesion And Cohesion
And Self Repairing
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8. NEED OF NANOTRIBOLOGY
•To control and manipulate matters at nanoscale.
•To observed magnetic and mechanical properties at nano-levels
•In advanced health care
•In energy conversion and storage
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9. APPLICATIONS
•MEMS/NEMS
•Bio MEMS/NEMS
•Super hydrophobic surfaces
•Reversible adhesion
•Beauty care products
•Nano-imprint lithography technologies
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10. CONCLUSION
•To clarify our understanding of macroscopic friction effects
•Improvements in machinery wear can be reduced
•Reduction in use of energy and materials if friction can be reduced
•To understand the friction and wear of magnetic storage devices
•AFM/FFM has been developed as a versatile tool for fundamental studies in
nanotribology
• It has been successfully used for studies of surface friction, wear, lubrication,
measurement of deformation studies.
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11. REFERENCES
1.F.P. Bowden and D. Tabor, Friction and Lubrication of Solids, Clarendon,
Oxford, 1950.
2.B. Bhushan, J.N. Israelachvili, and U. Landman, Nature 374 (1995) 607.
3. J. Krim and A. Widom, Phys. Rev. B 38 (1988) 12184.
4,Nanotribology and nanomechanics : Wear 259 (2005) 1507–1531
5.Effect of surface topography on the frictional behavior at the micro/nano-scale :
Wear 254 (2003) 1019–1031
6.Nanoscale friction mapping: APPLIED PHYSICS LETTERS 86, 193102 (2005)
7.Nanotribology: tip–sample wear under adhesive contact : Tribology
International 33 (2000) 443–452
8.Nanotribology : Chimia 56 (2002) 562–565
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12. THANK
YOU