07: Intermolecular and surface forces
|
|
|
- Archibald Bennett
- 5 years ago
- Views:
Transcription
1 Nanomanufacturing University of Michigan ME Winter : Intermolecular and surface forces February 3, 2010 John Hart hfp:// A.J. Hart 1
2 Announcements 2010 A.J. Hart 2
3 Recap: thermal proper>es Thermal energy in solids is carried by electrons and phonons Fourier s law (diffusive thermal transport) breaks down at small length scales and short Umes Like electrical conductance, there is a quantum unit of thermal conductance QuanUzed thermal conductance has been measured at VERY low temperatures in nanoscale structures, where the number of phonon modes is restricted BallisUc phonon transport occurs in sub- micron length CNTs Boundary scafering of phonons reduces thermal conducuvity and governs interface conductance this can be bad for contacts and good for thermoelectrics 2010 A.J. Hart 3
4 Course outline 0: IntroducUon to nanotechnology 1: ProperUes of nanostructures ( building blocks ) 2: InteracUons among nanostructures 3: Synthesis of nanostructures 4: Assembly of nanostructures and property scaling 5: Case studies and project presentauons Assignments: problem sets (4) exam (1), video assignment (1) project (1) 2010 A.J. Hart 4
5 2010 A.J. Hart 5
6 ~1 mm ~1 mm 2010 A.J. Hart 6
7 Pugno, J. Phys. Cond. MaF 19:395001, A.J. Hart 7
8 Today s agenda Origin of intermolecular and surface forces SummaUon of forces between solid bodies, based on pairwise interacuon potenuals CalculaUon of van der Waals forces and adhesion forces for regular geometries Methods of measuring surface forces Adhesion in nature 2010 A.J. Hart 8
9 Today s readings (ctools) Nominal: (on ctools) Israelachvili, excerpts from Intermolecular and Surface Forces Arzt et al., From micro to nano contacts in biological afachment devices Extras: (on ctools) Bishop et al., Nanoscale forces and their uses in self- assembly 2010 A.J. Hart 9
10 Forces hold the universe together Israelachvili A.J. Hart 10
11 Classifica>on of intermolecular forces Electrosta>c: Coulomb force between charges, and permanent dipole- dipole interacuons Polariza>on: Dipole moments induced in atoms by electric fields of nearby charges, and by permanent dipoles Quantum mechanical: give rise to chemical bonding Short- range: <1 nm (close to contact) Long- range: <100 nm Exponent on the force law is always > 3 (i.e., 1/r >3 ), else interacuon energy would increase for long distances and large bodies 2010 A.J. Hart 11
12 2010 A.J. Hart 12
13 Atomic, ionic, and molecular interac>ons Quantum mechanical (bonding) ElectrostaUc (charge- charge) PolarizaUon (charge- dipole, dipole- dipole) Israelachvili A.J. Hart 13
14 Quantum mechanical (exclusion) Israelachvili A.J. Hart 14
15 Defini>on of van der Waals (VDW) forces The afracuve or repulsive forces between molecular enuues (or between groups within the same molecular enuty) other than those due to bond formauon or to the electrostauc interacuon of ions (or ionic groups) with one another or with neutral molecules. The term includes: dipole dipole, dipole induced dipole and London (instantaneous induced dipole induced dipole) forces. The term is someumes used loosely for the totality of nonspecific a\rac>ve or repulsive intermolecular forces. Israelachvili; hfp://goldbook.iupac.org/v06597.html A.J. Hart 15
16 Lennard- Jones poten>al: neutral atoms or molecules repulsive - a\rac>ve Repulsive- afracuve balance = colloid stability hfp://en.wikipedia.org/wiki/lennard- Jones_potenUal 2010 A.J. Hart 16
17 Summing pairwise interac>ons Israelachvili A.J. Hart 17
18 2010 A.J. Hart 18
19 2010 A.J. Hart 19
20 2010 A.J. Hart 20
21 2010 A.J. Hart 21
22 2010 A.J. Hart 22
23 2010 A.J. Hart 23 Israelachvili. Sphere- plate (Langbein approxima>on) ( )( )( )( ) ) ( = n D n n n n R C D W ρ π D R C D W n 6 ) ( 6, 2 2 ρ π = =
24 Derjaguin approxima>on Israelachvili A.J. Hart 24
25 Derjaguin approxima>on F(Z), W(D) as derived for two planes D << (R1,R2) Applies to any force law Z = F ( D ) = 2πxdxf (Z ) Z =D x Z = D + z1 + z 2 = D R1 R2 1 1 dz = + xdx R1 R2 R1 R2 F ( D ) 2π f (Z )dz D R1 + R2 R1 R2 = 2π W ( D ) R1 + R2 Israelachvili A.J. Hart 25
26 Plane- plane versus sphere- sphere Equilibrium at points where force is zero (local minima of interacuon energy) Israelachvili A.J. Hart 26
27 VDW energies for regular geometries Israelachvili A.J. Hart 27
28 Hamaker constant How do we determine the pair potenual constant (C) for calculauons of total interacuon energy? 2010 A.J. Hart 28
29 Hamaker constants Israelachvili A.J. Hart 29
30 VDW- induced CNT deforma>on Hertel et al., Physical Review B 58(20):13870, A.J. Hart 30
31 MWNT telescoping bearings RelaxaUon Ume = nanoseconds VDW forces make this a constant- force spring Cumings, Science 289:602, A.J. Hart 31
32 Surface force apparatus (Israelachvili) Adjustment using interchangeable and variable- suffness springs Use opucal fringes to detect contact and measure separauon Calculate force knowing displacement and spring suffness SeparaUon controlled to 1 A Israelachvili A.J. Hart 32
33 Surface force apparatus (Israelachvili) Israelachvili A.J. Hart 33
34 (cap>ons for previous slides) Israelachvili A.J. Hart 34
35 Adhesion scaling in nature Artl et al., PNAS 100(19): , A.J. Hart 35
10: Electrosta7cs in solu7on
Nanomanufacturing University of Michigan ME599-002 Winter 2010 10: Electrosta7cs in solu7on February 15, 2010 John Hart ajohnh@umich.edu hdp://www.umich.edu/~ajohnh 2010 A.J. Hart 1 Announcements Video
The broad topic of physical metallurgy provides a basis that links the structure of materials with their properties, focusing primarily on metals.
Physical Metallurgy The broad topic of physical metallurgy provides a basis that links the structure of materials with their properties, focusing primarily on metals. Crystal Binding In our discussions
INTERMOLECULAR AND SURFACE FORCES
INTERMOLECULAR AND SURFACE FORCES SECOND EDITION JACOB N. ISRAELACHVILI Department of Chemical & Nuclear Engineering and Materials Department University of California, Santa Barbara California, USA ACADEMIC
Lecture C2 Microscopic to Macroscopic, Part 2: Intermolecular Interactions. Let's get together.
Lecture C2 Microscopic to Macroscopic, Part 2: Intermolecular Interactions Let's get together. Most gases are NOT ideal except at very low pressures: Z=1 for ideal gases Intermolecular interactions come
General Physical Chemistry II
General Physical Chemistry II Lecture 13 Aleksey Kocherzhenko October 16, 2014" Last time " The Hückel method" Ø Used to study π systems of conjugated molecules" Ø π orbitals are treated separately from
Surface interactions part 1: Van der Waals Forces
CHEM-E150 Interfacial Phenomena in Biobased Systems Surface interactions part 1: Van der Waals Forces Monika Österberg Spring 018 Content Colloidal stability van der Waals Forces Surface Forces and their
Colloid Chemistry. La chimica moderna e la sua comunicazione Silvia Gross.
Colloid Chemistry La chimica moderna e la sua comunicazione Silvia Gross Istituto Dipartimento di Scienze di e Scienze Tecnologie Chimiche Molecolari ISTM-CNR, Università Università degli Studi degli Studi
PY5020 Nanoscience Scanning probe microscopy
PY500 Nanoscience Scanning probe microscopy Outline Scanning tunnelling microscopy (STM) - Quantum tunnelling - STM tool - Main modes of STM Contact probes V bias Use the point probes to measure the local
Introductory Nanotechnology ~ Basic Condensed Matter Physics ~
Introductory Nanotechnology ~ Basic Condensed Matter Physics ~ Atsufumi Hirohata Department of Electronics Go into Nano-Scale Lateral Size [m] 10-3 10-6 Micron-scale Sub-Micron-scale Nano-scale Human hair
Specific ion effects on the interaction of. hydrophobic and hydrophilic self assembled
Supporting Information Specific ion effects on the interaction of hydrophobic and hydrophilic self assembled monolayers T. Rios-Carvajal*, N. R. Pedersen, N. Bovet, S.L.S. Stipp, T. Hassenkam. Nano-Science
Interfacial forces and friction on the nanometer scale: A tutorial
Interfacial forces and friction on the nanometer scale: A tutorial M. Ruths Department of Chemistry University of Massachusetts Lowell Presented at the Nanotribology Tutorial/Panel Session, STLE/ASME International
Intermolecular Forces I
I How does the arrangement of atoms differ in the 3 phases of matter (solid, liquid, gas)? Why doesn t ice just evaporate into a gas? Why does liquid water exist at all? There must be some force between
Atomic and molecular interaction forces in biology
Atomic and molecular interaction forces in biology 1 Outline Types of interactions relevant to biology Van der Waals interactions H-bond interactions Some properties of water Hydrophobic effect 2 Types
Phys 102 Lecture 2 Coulomb s Law & Electric Dipoles
Phys 102 Lecture 2 Coulomb s Law & Electric Dipoles 1 Today we will... Get practice using Coulomb s law & vector addition Learn about electric dipoles Apply these concepts! Molecular interactions Polar
Physical Chemistry - Problem Drill 01: Chemistry and Physics Review
Physical Chemistry - Problem Drill 01: Chemistry and Physics Review No. 1 of 10 1. Chemical bonds are considered to be the interaction of their electronic structures of bonding atoms involved, with the
Lecture: P1_Wk1_L1 IntraMolecular Interactions. Ron Reifenberger Birck Nanotechnology Center Purdue University 2012
Lecture: IntraMolecular Interactions Distinguish between IntraMolecular (within a molecule) and InterMolecular (between molecules) Ron Reifenberger Birck Nanotechnology Center Purdue University 2012 1
Contents. Preface XI Symbols and Abbreviations XIII. 1 Introduction 1
V Contents Preface XI Symbols and Abbreviations XIII 1 Introduction 1 2 Van der Waals Forces 5 2.1 Van der Waals Forces Between Molecules 5 2.1.1 Coulomb Interaction 5 2.1.2 Monopole Dipole Interaction
SCALING OF THE ADHESION BETWEEN PARTICLES AND SURFACES FROM MICRON-SCALE TO THE NANOMETER SCALE FOR PHOTOMASK CLEANING APPLICATIONS
SCALING OF THE ADHESION BETWEEN PARTICLES AND SURFACES FROM MICRON-SCALE TO THE NANOMETER SCALE FOR PHOTOMASK CLEANING APPLICATIONS Gautam Kumar, Shanna Smith, Florence Eschbach, Arun Ramamoorthy, Michael
Multiphase Flow and Heat Transfer
Multiphase Flow and Heat Transfer Liquid-Vapor Interface Sudheer Siddapuredddy sudheer@iitp.ac.in Department of Mechanical Engineering Indian Institution of Technology Patna Multiphase Flow and Heat Transfer
Outline for Today. Monday, Nov. 26. Chapter 11: Intermolecular Forces and Liquids. Intermolecular Foces. Comparing States of Matter
Outline for Today Monday, Nov. 26 Chapter 11: Intermolecular Forces and Liquids Intermolecular Foces Comparing States of Matter Properties of Liquids Phase Changes!1 Exam 3 Reminders When: Wednesday at
File ISM04. Properties of Colloids I
File ISM04 Properties of Colloids I 1 Colloids Small things, but much bigger than a molecule Background: Foundations of Colloid Science Vol I & II, R.J. Hunter Physical Chemistry, P.W. Atkins, Chapter
Nanoscale Energy Transport and Conversion A Parallel Treatment of Electrons, Molecules, Phonons, and Photons
Nanoscale Energy Transport and Conversion A Parallel Treatment of Electrons, Molecules, Phonons, and Photons Gang Chen Massachusetts Institute of Technology OXFORD UNIVERSITY PRESS 2005 Contents Foreword,
L8: The Mechanics of Adhesion used by the Gecko
L8: The Mechanics of Adhesion used by the Gecko With help from Bo He Overview Gecko s foot structure Intermolecular force Measurement: 2-D MEMS sensor Gecko s adhesive mechanism Measurement results discussion
Origin of the atttractive part of Lennard-Jones potential
Origin of the atttractive part of Lennard-Jones potential Masahiro Yamamoto Department of Chemistry, Konan University, Kobe, 658-850, Japan (Dated: February 7, 06) A. Origin of the attractive part of L-J
Complete and precise descriptions based on quantum mechanics exist for the Coulombic/Electrostatic force. These are used to describe materials.
The forces of nature: 1. Strong forces hold protons and neutrons together (exchange of mesons) 2. Weak interactions are involved in some kinds of radioactive decay (β-decay) 3. Coulombic or electrostatic
Chapter 3. Crystal Binding
Chapter 3. Crystal Binding Energy of a crystal and crystal binding Cohesive energy of Molecular crystals Ionic crystals Metallic crystals Elasticity What causes matter to exist in three different forms?
CE 530 Molecular Simulation
1 CE 530 Molecular Simulation Lecture 14 Molecular Models David A. Kofke Department of Chemical Engineering SUNY Buffalo kofke@eng.buffalo.edu 2 Review Monte Carlo ensemble averaging, no dynamics easy
Materials 218/UCSB: Class III Cohesion in solids van der Waals, ionic, covalent, metallic
Materials 218/UCSB: Class III Cohesion in solids van der Waals, ionic, covalent, metallic Ram Seshadri (seshadri@mrl.ucsb.edu) Introduction There are four forces in nature. The strong and the weak interactions
Material Properties & Characterization - Surfaces
1) XPS Spectrum analysis: The figure below shows an XPS spectrum measured on the surface of a clean insoluble homo-polyether. Using the formulas and tables in this document, answer the following questions:
Fundamental Interactions: 6 Forces
Fundamental Interactions: 6 Forces In nuclear and high-energy physics 6 fundamental forces are recognized, which describe the structure of matter. - the strong interaction - the weak interaction act inside
Bonding, structure and trends (periodicity)
Bonding, structure and trends (periodicity) Bonding and structure revision Objec
The liquid-vapour interface of QDO water. Flaviu Cipcigan Andrew Jones Jason Crain Vlad Sokhan Glenn Martyna
The liquid-vapour interface of QDO water Flaviu Cipcigan Andrew Jones Jason Crain Vlad Sokhan Glenn Martyna The liquid-vapour interface of QDO water 1. Molecular models 2. The Quantum Drude Oscillator
Biochemistry,530:,, Introduc5on,to,Structural,Biology, Autumn,Quarter,2015,
Biochemistry,530:,, Introduc5on,to,Structural,Biology, Autumn,Quarter,2015, Course,Informa5on, BIOC%530% GraduateAlevel,discussion,of,the,structure,,func5on,,and,chemistry,of,proteins,and, nucleic,acids,,control,of,enzyma5c,reac5ons.,please,see,the,course,syllabus,and,
3.052 Nanomechanics of Materials and Biomaterials Assignment #3 Due :
.5 Nanomechanics of Materials and Biomaterials : Spring 7 Assignment # Due Date : Thursday.5.7 You are encouraged to use additional resources (e.g. journal papers, internet, etc. but please cite them (points
Aqueous solutions. Solubility of different compounds in water
Aqueous solutions Solubility of different compounds in water The dissolution of molecules into water (in any solvent actually) causes a volume change of the solution; the size of this volume change is
IMFA s. intermolecular forces of attraction Chez Chem, LLC All rights reserved.
IMFA s intermolecular forces of attraction 2014 Chez Chem, LLC All rights reserved. **London Dispersion Forces Also know as Van der Waals forces A momentary non symmetrical electron distribution that can
Scientific Computing II
Scientific Computing II Molecular Dynamics Simulation Michael Bader SCCS Summer Term 2015 Molecular Dynamics Simulation, Summer Term 2015 1 Continuum Mechanics for Fluid Mechanics? Molecular Dynamics the
The Potential Energy Surface (PES) And the Basic Force Field Chem 4021/8021 Video II.iii
The Potential Energy Surface (PES) And the Basic Force Field Chem 4021/8021 Video II.iii Fundamental Points About Which to Be Thinking It s clear the PES is useful, so how can I construct it for an arbitrary
Intermolecular and Surface Forces
Intermolecular and Surface Forces ThirH FHitinn '' I I 111 \J& LM* КтЛ I Km I W I 1 Jacob N. Israelachvili UNIVERSITY OF CALIFORNIA SANTA BARBARA, CALIFORNIA, USA AMSTERDAM BOSTON HEIDELBERG LONDON NEW
Scanning Force Microscopy
Scanning Force Microscopy Roland Bennewitz Rutherford Physics Building 405 Phone 398-3058 roland.bennewitz@mcgill.ca Scanning Probe is moved along scan lines over a sample surface 1 Force Microscopy Data
CH676 Physical Chemistry: Principles and Applications. CH676 Physical Chemistry: Principles and Applications
CH676 Physical Chemistry: Principles and Applications History of Nanotechnology: Time Line Democritus in ancient Greece: concept of atom 1900 : Rutherford : discovery of atomic nucleus The first TEM was
Molecular Forces in Biological Systems - Electrostatic Interactions; - Shielding of charged objects in solution
Molecular Forces in Biological Systems - Electrostatic Interactions; - Shielding of charged objects in solution Electrostatic self-energy, effects of size and dielectric constant q q r r ε ε 1 ε 2? δq
Chapter Outline Understanding of interatomic bonding is the first step towards understanding/explaining materials properties Review of Atomic
Chapter Outline Understanding of interatomic bonding is the first step towards understanding/explaining materials properties Review of Atomic Structure: Electrons, Protons, Neutrons, Quantum mechanics
Lecture Presentation. Chapter 11. Liquids and Intermolecular Forces. John D. Bookstaver St. Charles Community College Cottleville, MO
Lecture Presentation Chapter 11 Liquids and Intermolecular Forces John D. Bookstaver St. Charles Community College Cottleville, MO Properties of Gases, Liquids, and Solids State Volume Shape of State Density
Chapter Outline Understanding of interatomic bonding is the first step towards understanding/explaining materials properties Review of Atomic
Chapter Outline Understanding of interatomic bonding is the first step towards understanding/explaining materials properties Review of Atomic Structure: Electrons, Protons, Neutrons, Quantum mechanics
SELF-ASSEMBLY AND NANOTECHNOLOGY A Force Balance Approach
SELF-ASSEMBLY AND NANOTECHNOLOGY A Force Balance Approach Yoon S. Lee Scientific Information Analyst Chemical Abstracts Service A Division of the American Chemical Society Columbus, Ohio WILEY A JOHN WILEY
States of Matter. Intermolecular Forces. The States of Matter. Intermolecular Forces. Intermolecular Forces
Intermolecular Forces Have studied INTRAmolecular forces the forces holding atoms together to form compounds. Now turn to forces between molecules INTERmolecular forces. Forces between molecules, between
Intermolecular Forces in Density Functional Theory
Intermolecular Forces in Density Functional Theory Problems of DFT Peter Pulay at WATOC2005: There are 3 problems with DFT 1. Accuracy does not converge 2. Spin states of open shell systems often incorrect
Chapter 11. Intermolecular Forces, Liquids, and Solids
Chapter 11. Intermolecular Forces, Liquids, and Solids A Molecular Comparison of Gases, Liquids, and Solids Physical properties of substances are understood in terms of kinetic-molecular theory: Gases
A van der Waals Force-Based Adhesion Model for Micromanipulation
Journal of Adhesion Science and Technology 24 (2010) 2415 2428 brill.nl/jast A van der Waals Force-Based Adhesion Model for Micromanipulation S. Alvo a,b,, P. Lambert b,c, M. Gauthier b and S. Régnier
Module17: Intermolecular Force between Surfaces and Particles. Lecture 23: Intermolecular Force between Surfaces and Particles
Module17: Intermolecular Force between Surfaces and Particles Lecture 23: Intermolecular Force between Surfaces and Particles 1 We now try to understand the nature of spontaneous instability in a confined
Liquids and Solids The Condensed States of Matter
Liquids and Solids The Condensed States of Matter AP Chemistry Ms. Grobsky Where We Have Been And Where We Are Going In the last few chapters, we saw that atoms can form stable units called molecules by
Biophysics II. Hydrophobic Bio-molecules. Key points to be covered. Molecular Interactions in Bio-molecular Structures - van der Waals Interaction
Biophysics II Key points to be covered By A/Prof. Xiang Yang Liu Biophysics & Micro/nanostructures Lab Department of Physics, NUS 1. van der Waals Interaction 2. Hydrogen bond 3. Hydrophilic vs hydrophobic
Unit 6: Molecular Geometry
Unit 6: Molecular Geometry Molecular Geometry [6-5] the polarity of each bond, along with the geometry of the molecule determines Molecular Polarity. To predict the geometries of more complicated molecules,
- intermolecular forces forces that exist between molecules
Chapter 11: Intermolecular Forces, Liquids, and Solids - intermolecular forces forces that exist between molecules 11.1 A Molecular Comparison of Liquids and Solids - gases - average kinetic energy of
Basic Laboratory. Materials Science and Engineering. Atomic Force Microscopy (AFM)
Basic Laboratory Materials Science and Engineering Atomic Force Microscopy (AFM) M108 Stand: 20.10.2015 Aim: Presentation of an application of the AFM for studying surface morphology. Inhalt 1.Introduction...
CHAPTER 11: Intermolecular Forces, Liquids, and Solids. Are there any IDEAL GASES? The van der Waals equation corrects for deviations from ideality
CHAPTER 11: Intermolecular Forces, Liquids, and Solids Are there any IDEAL GASES? The van der Waals equation corrects for deviations from ideality Does the KMT break down? Kinetic Molecular Theory 1. Gas
Molecular Dynamics Simulation of a Nanoconfined Water Film
Molecular Dynamics Simulation of a Nanoconfined Water Film Kyle Lindquist, Shu-Han Chao May 7, 2013 1 Introduction The behavior of water confined in nano-scale environment is of interest in many applications.
Primary bonding: e- are transferred or shared Strong ( KJ/mol or 1-10 ev/atom) Secondary Bonding: no e -
Types of Bondings Primary bonding: e- are transferred or shared Strong (100-1000 KJ/mol or 1-10 ev/atom) Ionic: Strong Coulomb interaction among negative atoms (have an extra electron each) and positive
Thermodynamically Stable Emulsions Using Janus Dumbbells as Colloid Surfactants
Thermodynamically Stable Emulsions Using Janus Dumbbells as Colloid Surfactants Fuquan Tu, Bum Jun Park and Daeyeon Lee*. Description of the term notionally swollen droplets When particles are adsorbed
ME 4875/MTE C18. Introduction to Nanomaterials and Nanotechnology. Lecture 3 - Atomic Structure and Bonding
ME 4875/MTE 575 - C18 Introduction to Nanomaterials and Nanotechnology Lecture 3 - Atomic Structure and Bonding 1 Atomic Structure and Bonding It s important to know about atomic structure and bonding
An introduction to Molecular Dynamics. EMBO, June 2016
An introduction to Molecular Dynamics EMBO, June 2016 What is MD? everything that living things do can be understood in terms of the jiggling and wiggling of atoms. The Feynman Lectures in Physics vol.
Foundations of. Colloid Science SECOND EDITION. Robert J. Hunter. School of Chemistry University of Sydney OXPORD UNIVERSITY PRESS
Foundations of Colloid Science SECOND EDITION Robert J. Hunter School of Chemistry University of Sydney OXPORD UNIVERSITY PRESS CONTENTS 1 NATURE OF COLLOIDAL DISPERSIONS 1.1 Introduction 1 1.2 Technological
NEM Relays Using 2-Dimensional Nanomaterials for Low Energy Contacts
NEM Relays Using 2-Dimensional Nanomaterials for Low Energy Contacts Seunghyun Lee, Ji Cao 10/29/2013 A Science & Technology Professor H. -S. Philip Wong Electrical Engineering, Stanford University Center
Forces Acting on Particle
Particle-Substrate Interactions: Microscopic Aspects of Adhesion Don Rimai NexPress Solutions LLC. Rochester, NY 14653-64 Email: donald_rimai@nexpress.com (Edited for course presentation by ) Part Role
CHEMISTRY. Chapter 11 Intermolecular Forces Liquids and Solids
CHEMISTRY The Central Science 8 th Edition Chapter 11 Liquids and Solids Kozet YAPSAKLI States of Matter difference between states of matter is the distance between particles. In the solid and liquid states
Modeling and Simulating Gold Nanoparticle Interactions on a Liquid-Air Interface
Modeling and Simulating Gold Nanoparticle Interactions on a Liquid-Air Interface Jennifer Jin 1 and Dr. Jacques Amar 2 1 Mary Baldwin College, 2 Department of Physics & Astronomy, University of Toledo
Introduction to molecular dynamics
1 Introduction to molecular dynamics Yves Lansac Université François Rabelais, Tours, France Visiting MSE, GIST for the summer Molecular Simulation 2 Molecular simulation is a computational experiment.
RW Session ID = MSTCHEM1 Intermolecular Forces
RW Session ID = MSTCHEM1 Intermolecular Forces Sections 9.4, 11.3-11.4 Intermolecular Forces Attractive forces between molecules due to charges, partial charges, and temporary charges Higher charge, stronger
6 Shapes of molecules and intermolecular forces Answers to practice questions. OCR Chemistry A. Question Answer Marks Guidance
1 (a) (i) HI, HBr, HCl, HF 1 (a) (ii) CF 4, CH 3 I, CH 2 Br 2, CHCl 2 F 1 (b) (i) CO 2 and HCN: linear H 2 O and SCl 2 : non-linear BF 3 and SO 3 : trigonal planar NH 3 and H 3 O + : pyramidal AlCl 4 and
Theore&cal Study of Adsorp&on in SIFSIX- 3- Zn Type Porous Materials
Theore&cal Study of Adsorp&on in SIFSIX- 3- Zn Type Porous Materials Ahmad Ziaee* 1,2, Drahomir Chovan 1,2, Michael Zaworotko 2,3 and Syed A.M. Tofail 1,2 1 Department of Physics and Energy 2 Materials
Physics 272: Electricity and Magnetism. Mark Palenik Wednesday June 13 th
Physics 272: Electricity and Magnetism Mark Palenik Wednesday June 13 th Todays topics Polarization and electric field Polarization of atoms Transfer of charge Charged Particles Net charge: sum of all
! Importance of Particle Adhesion! History of Particle Adhesion! Method of measurement of Adhesion! Adhesion Induced Deformation
! Importance of Particle Adhesion! History of Particle Adhesion! Method of measurement of Adhesion! Adhesion Induced Deformation! JKR and non-jkr Theory! Role of Electrostatic Forces! Conclusions Books:
Scanning Force Microscopy II
Scanning Force Microscopy II Measurement modes Magnetic force microscopy Artifacts Lars Johansson 1 SFM - Forces Chemical forces (short range) Van der Waals forces Electrostatic forces (long range) Capillary
Polar Bonds and Molecules
Chemistry 1 of 33 Snow covers approximately 23 percent of Earth s surface. Each individual snowflake is formed from as many as 100 snow crystals. The polar bonds in water molecules influence the distinctive
arxiv:cond-mat/ v1 [cond-mat.soft] 9 Aug 1997
![arxiv:cond-mat/ v1 [cond-mat.soft] 9 Aug 1997](/thumbs/89/99391124.jpg "arxiv:cond-mat/ v1 [cond-mat.soft] 9 Aug 1997")
Depletion forces between two spheres in a rod solution. K. Yaman, C. Jeppesen, C. M. Marques arxiv:cond-mat/9708069v1 [cond-mat.soft] 9 Aug 1997 Department of Physics, U.C.S.B., CA 93106 9530, U.S.A. Materials
Intermolecular Forces and Strengths How do molecules stick together even in the worst of times?
Why? Intermolecular Forces and Strengths How do molecules stick together even in the worst of times? As you have learned, matter is made up of discrete particles called atoms, which chemically combine
Atomic structure & interatomic bonding. Chapter two
Atomic structure & interatomic bonding Chapter two 1 Atomic Structure Mass Charge Proton 1.67 х 10-27 kg + 1.60 х 10-19 C Neutron 1.67 х 10-27 kg Neutral Electron 9.11 х 10-31 kg - 1.60 х 10-19 C Electron
Seminars in Nanosystems - I
Seminars in Nanosystems - I Winter Semester 2011/2012 Dr. Emanuela Margapoti Emanuela.Margapoti@wsi.tum.de Dr. Gregor Koblmüller Gregor.Koblmueller@wsi.tum.de Seminar Room at ZNN 1 floor Topics of the
THE BIG IDEA: BONDING AND INTERACTIONS.
HONORS CHEMISTRY - CHAPTER 8 COVALENT BONDS OBJECTIVES AND NOTES - PART 2 - V12 NAME: DATE: PAGE: THE BIG IDEA: BONDING AND INTERACTIONS. Essential Questions 1. How is the bonding in molecular compounds
Structural Bioinformatics (C3210) Molecular Mechanics
Structural Bioinformatics (C3210) Molecular Mechanics How to Calculate Energies Calculation of molecular energies is of key importance in protein folding, molecular modelling etc. There are two main computational
Example questions for Molecular modelling (Level 4) Dr. Adrian Mulholland
Example questions for Molecular modelling (Level 4) Dr. Adrian Mulholland 1) Question. Two methods which are widely used for the optimization of molecular geometies are the Steepest descents and Newton-Raphson
Covalent Bonding bonding that results from the sharing of electron pairs.
Unit 5 Notes Covalent Bonding, Covalent Compounds, and Intermolecular Forces Chemical Bond a mutual electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms
What determines whether a substance will be a solid, liquid, or gas? Thursday, April 24, 14
What determines whether a substance will be a solid, liquid, or gas? Answer: The attractive forces that exists between its particles. Answer: The attractive forces that exists between its particles. For
A General Equation for Fitting Contact Area and Friction vs Load Measurements
Journal of Colloid and Interface Science 211, 395 400 (1999) Article ID jcis.1998.6027, available online at http://www.idealibrary.com on A General Equation for Fitting Contact Area and Friction vs Load
*blood and bones contain colloids. *milk is a good example of a colloidal dispersion.
Chap. 3. Colloids 3.1. Introduction - Simple definition of a colloid: a macroscopically heterogeneous system where one component has dimensions in between molecules and macroscopic particles like sand
Chapter 12. Insert picture from First page of chapter. Intermolecular Forces and the Physical Properties of Liquids and Solids
Chapter 12 Insert picture from First page of chapter Intermolecular Forces and the Physical Properties of Liquids and Solids Copyright McGraw-Hill 2009 1 12.1 Intermolecular Forces Intermolecular forces
26.542: COLLOIDAL NANOSCIENCE & NANOSCALE ENGINEERING Fall 2013
26.542: COLLOIDAL NANOSCIENCE & NANOSCALE ENGINEERING Fall 2013 Classes: Thurs, 6-9 pm; Ball Hall Room 208 Professor: Dr. B. Budhlall Office: Ball Hall 203B, Phone: 978-934-3414 Email: Bridgette_Budhlall@uml.edu
Imperfect Gases. NC State University
Chemistry 431 Lecture 3 Imperfect Gases NC State University The Compression Factor One way to represent the relationship between ideal and real gases is to plot the deviation from ideality as the gas is
Introduction to Molecular Dynamics
Introduction to Molecular Dynamics Dr. Kasra Momeni www.knanosys.com Overview of the MD Classical Dynamics Outline Basics and Terminology Pairwise interacting objects Interatomic potentials (short-range
Nanotechnology. Gavin Lawes Department of Physics and Astronomy
Nanotechnology Gavin Lawes Department of Physics and Astronomy Earth-Moon distance 4x10 8 m (courtesy NASA) Length scales (Part I) Person 2m Magnetic nanoparticle 5x10-9 m 10 10 m 10 5 m 1 m 10-5 m 10-10
The effect of surface dipoles and of the field generated by a polarization gradient on the repulsive force
Journal of Colloid and Interface Science 263 (2003) 156 161 www.elsevier.com/locate/jcis The effect of surface dipoles and of the field generated by a polarization gradient on the repulsive force Haohao
Topic 04 Bonding 4.3 Intermolecular Forces. IB Chemistry T04D05
Topic 04 Bonding 4.3 Intermolecular orces IB Chemistry T04D05 Intermolecular orces 2 hrs 4.3.1 Describe the types of intermolecular forces (attractions between molecules that have temporary dipoles, permanent
Reactive potentials and applications
1.021, 3.021, 10.333, 22.00 Introduction to Modeling and Simulation Spring 2011 Part I Continuum and particle methods Reactive potentials and applications Lecture 8 Markus J. Buehler Laboratory for Atomistic
Chapter 11. Liquids and Intermolecular Forces
Chapter 11. Liquids and Intermolecular Forces 11.1 A Molecular Comparison of Gases, Liquids, and Solids Gases are highly compressible and assume the shape and volume of their container. Gas molecules are
ψ s a ˆn a s b ˆn b ψ Hint: Because the state is spherically symmetric the answer can depend only on the angle between the two directions.
1. Quantum Mechanics (Fall 2004) Two spin-half particles are in a state with total spin zero. Let ˆn a and ˆn b be unit vectors in two arbitrary directions. Calculate the expectation value of the product
Structural and Mechanical Properties of Nanostructures
Master s in nanoscience Nanostructural properties Mechanical properties Structural and Mechanical Properties of Nanostructures Prof. Angel Rubio Dr. Letizia Chiodo Dpto. Fisica de Materiales, Facultad
MOLECULAR INTERACTIONS NOTES
- 1 - MOLECULAR INTERACTIONS NOTES Summary of Fundamental Molecular Interactions Q1Q Ion-Ion U ( r) = 4 r πεε o µ Q cosθ U ( r) = 4πεε o r µ 1µ U ( r) 3 r µ 1 µ U ( r) 6 r µ 1 α U ( r) 6 r Ion-Dipole Dipole-Dipole
What factors affect whether something is a solid, liquid or gas? What actually happens (breaks) when you melt various types of solids?
States of Mattter What factors affect whether something is a solid, liquid or gas? What actually happens (breaks) when you melt various types of solids? What external factors affect whether something is
The Oxford Solid State Basics
The Oxford Solid State Basics Steven H. Simon University of Oxford OXFORD UNIVERSITY PRESS Contents 1 About Condensed Matter Physics 1 1.1 What Is Condensed Matter Physics 1 1.2 Why Do We Study Condensed