COURSE UNIT TITLE

: NANOTRIBOLOGY

DEGREE PROGRAMMES

Description of Individual Course Units

Course Unit Code Course Unit Title Type Of Course D U L ECTS
NNE 5025 NANOTRIBOLOGY ELECTIVE 3 0 0 8

Offered By

Graduate School of Natural and Applied Sciences

Level of Course Unit

Second Cycle Programmes (Master's Degree)

Course Coordinator

PROFESSOR UĞUR MALAYOĞLU

Offered to

Nanoscience and Nanoengineering
Nanoscience and Nanoengineering

Course Objective

Tribology is the science and technology of surfaces in relative motion. This discipline which involves friction, lubrication and wear plays a crucial role in both research activities and practical applications. The interest in nanotribology has been increased during the last decade as the size of parts in micro/nano devices is continuously decreasing. In spite of this the fundamental mechanisms behind tribology are practically undiscovered except in the case of conventional hydrodynamic lubrication.
An intense research effort to reveal the tribological origins was initiated 15-20 years ago by several physical and chemical societies all over the world. The new research angles were the increasing possibilities to observe surfaces at the nano-scale and the rapidly increasing computer processing capacity for simulations.
The nanotribological research has not yet solved the tribological challenge but has and is still clarifying elements of the sliding friction puzzle: These are the topics of the present course

Learning Outcomes of the Course Unit

1   Provide students with physically-based foundational knowledge of mechanical and tribological behavior of interfaces at the atomic/molecular/nanometer scale
2   Illustrate the current research approaches to studying these problems in terms of experiments, theory, and computation
3   For background, to introduce the students to key macroscopic principles of tribology so that they can appreciate the differences and similarities with nanotribology
4   Also for background, to introduce students to the topics of crystallography (atomic structure and bonding) and the physical principles of surfaces
5   Demonstrate how specific physical behavior and engineering design requirements with regard to mechanics and tribology change with scale
6   Discuss the mechanical and tribological behavior of specific materials, and demonstrate how specific material properties and conditions affect nano-scale mechanical and tribological behavior
7   Expose students to the cross-disciplinary intersections that occur between mechanics and materials science, chemistry, physics, and biology when working at the nano-scale
8   Enhance students appreciation of the current state and potential future impact of nanotechnology, and how nanomechanics and nanotribology are important for this

Mode of Delivery

Face -to- Face

Prerequisites and Co-requisites

None

Recomended Optional Programme Components

None

Course Contents

Week Subject Description
1 Introduction, overview of nanotechnology Overview of size effects and applications
2 Introduction to tribology
3 Surface roughness Hertz theory of single asperity contact
4 Rough (multi asperity) contact Fractal and numerical methods for rough contact
5 Surface energy - Liquids and capillary pressure Interfacial energy, surface energy of solids
6 Surface forces: Dry environments Surface forces: Wet environments
7 Mid-term examination
8 Van der Waals force Gecko Adhesion
9 Liquid-mediated forces, contact electrification
10 Measuring surface forces: SFA, AFM
11 Atomistic origins of friction: static friction Atomistic origins of friction: kinetic friction
12 Case studies: theory and experimental
13 Wear: Macroscale an nanoscale
14 Final examination

Recomended or Required Reading

Micro and Nanotribology, The American Society of Mechanical Engineers, New York, 2005.
Nanotribology and Nanomechanics: An Introduction Bharat Bhushan. Springer, 2005

Planned Learning Activities and Teaching Methods

The course is taught in a lecture, class presentation and discussion format. All class members are expected to attend and both the lecture and seminar hours and take part in the discussion sessions. Besides the taught lecture, group presentations are to be prepared by the groups assigned for that week and presented to open a discussion session.
Practice + Quiz+Midterm Exam

Assessment Methods

SORTING NUMBER SHORT CODE LONG CODE FORMULA
1 PRS PRESENTATION
2 PAR PARTICIPATION
3 FIN FINAL EXAM
4 FCG FINAL COURSE GRADE PRS * 0.40 + PAR * 0.10 + FIN * 0.50
5 RST RESIT
6 FCGR FINAL COURSE GRADE (RESIT) PRS * 0.40 + PAR * 0.10 + RST * 0.50


Further Notes About Assessment Methods

There will be 2 quiz during the term and if needed home works will be given

Assessment Criteria

All exams will be evaluated according to learning outcomes 1-8.

Language of Instruction

English

Course Policies and Rules

At least %70 of attendance to lectures are compulsory

Contact Details for the Lecturer(s)

Office tel: 301 7475
E-Mail: ugur.malayoglu@deu.edu.tr

Office Hours

Wednesday: 10.00-12.00
Friday : 9.30-11.30

Work Placement(s)

None

Workload Calculation

Activities Number Time (hours) Total Work Load (hours)
Lectures 13 4 52
Case study 1 5 5
Preparations before/after weekly lectures 13 3 39
Preparation for midterm exam 1 10 10
Preparation for final exam 1 15 15
Preparing assignments 2 15 30
Midterm 1 10 10
Final 1 20 20
Quiz etc. 2 7 14
TOTAL WORKLOAD (hours) 195

Contribution of Learning Outcomes to Programme Outcomes

PO/LOPO.1PO.2PO.3PO.4PO.5PO.6PO.7
LO.14333334
LO.24333334
LO.34333334
LO.44333334
LO.54333334
LO.64333334
LO.74333334
LO.84333334

CONTACT INFORMATION
Dokuz Eylül Üniversitesi Cumhuriyet Bulvarı No: 144 35210 Alsancak / İZMİR
Phone: +90(232) 412 12 12 - Fax: +90 (232) 464 81 35

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