Winter, 2004
R. M. Overney

Suggested Literature:

 

- Contact Mechnics, J.K. Johnson, Cambridge Press 1985

- Computer Simulation of Liquids, M.P. Allan, D.J. Tildesley, Oxford Univ. Press 1990.

- Intramolecular & Surface Forces, Jacob Israelachvili, Academic Press 1991.

- Nanoscience, Friction and Rheology on the Nanometer Scale, E. Meyer, R.M. Overney et al., Word Scientific 1998.

- Nonequilibrium Statistical Mechanics, Robert Zwanzig, Oxford Univ. Press 2001.

 

ChemE 554

NanoScience I: Course Outline

1. Introduction

 

1.1 Motivation for Nanoscience as a "Mesoscale Science (Lecture Slides *.ppt)

The complexity of lower dimensionalities illustrated with "Flatland- A Romance of Many Dimensions" by A. Abbott. (Lecture Slides *.ppt)

 

Mesoscale Technologies: Examples (Lecture Slides *.ppt)

Energy: Transport in Fuel Cells; Mesoscale Lubrication.

Electronics: Finite-size Constrained Polymer LED Material.

Pharmaceutical: Drug Delivery.

Bio-Medical: Stress-Matching in Hip Implants.

 

 

1.2 Overview: Nanoscience and Nanotechnology (Lecture Slides *.ppt)

 

1.3 Real-space surface science microscopy with nano-resolution (Lecture Slides *.ppt)

 

1.3.1 Scanning Tunneling Microscopy (STM)

1.3.2 Scanning Force Microscopy (SFM)

1.3.3 Scanning Nearfield Optical Microscopy (SNOM)

 

 

2. Surface Mechanics and Interactions

Elastic and plastic contact deformations, adhesion and short-range interactions

 

2.1 Intermolecular and Surface Forces (Additional Paper)

 

2.1.1 Overview: Types of Surface Forces

2.1.2 Capillary Forces

Critical dimensions for meniscus formation.

2.1.3 Van der Waals Forces

Derjaguin Approximations, Hamaker Constant, Lifshitz Theory

2.1.4 Adhesion

What defines contact?

2.1.5 Instrumental techniques

Instrumentation: Surface Forces Apparatus

 

 

2.2 Contact Mechanics

 

2.2.1 Introduction

2.2.2 Hertz Elastic Theory of Contact

2.2.3 Adhesive Corrected Hertzian Theory: The JKR Theory

2.2.4 The Adhesive-Elastic Contact Formation

 

2.3 Basic Continuum Mechanics

 

2.3.1 Elastic Moduli and Free Energy Relations

2.3.2 Special cases of elasticity and methods

2.3.3 Cantilever Elasticity, Sample and Contact Stiffness

 

3. Surface Mechanical Probing of Materials

 

3.1 Hardness determination

 

3.1.1 Quasi-static indentation hardness method

3.1.2 Berkovich Indenter

3.1.3 Area Function

3.1.4 Indentation Procedure

 

3.2 Indentation Mechanics

 

3.2.1 Elastic-Perfectly Plastic

3.2.2 Elastic-Real Plastic

3.2.3 Thermoelastic

 

3.3 Rim Formation During Indentation

3.4 Ultrahigh Density Recording via Thermomechanical Nanoindentations

 

4. Rheology, Lubrication and Relaxations

 

4.1 Basic Rheological Concepts

 

4.1.1 Stress-Strain and Strain-Rate Relationships

4.1.2 Equation of Motions

4.1.3 Viscous Flow in the Solid-Liquid Boundary Regime

 

4.2 Lubrication A Nanorheological Endeavor

 

4.2.1 Hydrodynamic Lubrication

4.2.2 Extended Regimes of Lubrication

4.2.3 Viscoelastic Theory and Lubrication

 

4.3 Polymer Rheology

 

4.3.1 Linear Viscoelasticity

4.3.2 Mechanical Models Summary

4.4 Glass Transition

 

4.4.1 The Nature of the Glass Transition

4.4.2 Molecular Mobility in Supercooled Liquids

4.4.3 Molecular Mobility from Liquid to the Glassy Solid

4.4.4 Applicability of the Molecular Mobility Models

4.4.5 Molecular Mobility in Glassy Solids

4.4.6 Molecular Diffusion in Amorphous Polymers

4.4.7 Methods Used to Determine Glass Transition Temperatures

 

4.5 Surface Glass Transition (Papers 1, 2)

 

4.5.1 Background

4.5.2 Interfacial Confinement Effects and Film Preparation History

4.5.3 Liquid-like Surface Models that Address Tg Depletion in Thin Films

4.5.4 Shear Modulation Scanning Force Microscopy (SM-SFM)

4.5.5 Mobile Surface Layer Theories and Preliminary SM-SFM Results

4.5.6 SM-SFM Transition Measurements of Ultrathin Supported Films

 

4.6 Nano-Rheology of Confined Simple Liquids (Additional Paper) (Lecture Slides *.ppt)

 

4.6.1 Dynamic Surface Forces Apparatus Studies on Confined Liquids

4.6.2 Dynamic Force Microscopy Study on Liquids

4.6.3 Viscous Friction Force Measurements between Lubricated Surfaces

4.6.4 Theoretical Shear Simulations and Mechanical Models

4.6.5 Surface-induced Entropic Structuring of Simple Liquids (Papers: 1)

4.6.6 Ultrathin SFA Confined Films: Drainage, Layering and Friction (Papers: 1, 2) (Movie Clip)

 

5. Tribology Friction and Wear

 

5.1 Overview Tribology

 

5.2 History of Tribology

From Ancient Egypt to the Twenties Century of Tomlinson's Atomistic Model

 

5.3 Kinetics and Energetics in Nanolubrication

Molecular friction experiments, Langevin equation of motion, fluctuating forces, rate and temperature dependence of friction

 

5.4 Friction Dynamics: Molecular Dissipation in Glassy Polymers

Molecular friction experiments, Langevin equation of motion, fluctuating forces, rate and temperature dependence of friction

 

6. Specialty Topics - Projects

 

6.1 Nanostructured Materials for Photovoltaic Cells

Conventional Devices, Polymers, Conjugated Polymers,Doping Conjugated Polymers

Polymeric Devices, CdSe Hybrid Solar Cells, TiO2 Hybrid Solar Cells

 

6.2 Nanofabrication, the New Generation of Lithography

Introduction to Microfabrication, Photolithography, Advancement to Nanofabrication for Photolithography, Resolution Enhancement Technologies (RETs), Optical Proximity Correction (OPC), Phase-shifting mask, Alternative Nanofabrication Process, X Ray Lithography , Particle Beam Lithography with Electron (EBL) and Ion (IBL)

 

6.3 Applications of Carbon Nanostructures to Fuel Cell Technology

Fuel Cell Technology, Carbon Nanotubes, Nanotubes as Catalyst Supports, Hydrogen Storage in Carbon Nanotubes