Complex Materials in Physics and Biology ( International School of Physics “Enrico Fermi” )

Publication series : International School of Physics “Enrico Fermi”

Author: Mallamace F.;Stanley H.E.  

Publisher: Ios Press‎

Publication year: 2012

E-ISBN: 9781614990710

P-ISBN(Paperback): 9781614990703

Subject: O411.1 Mathematical Methods of Physics

Keyword: 物理学

Language: ENG

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Description

The surprising connections which have developed between physics and various fields as diverse as biology and economics now constitute the fascinating research area known as complex materials and systems. The study of complex materials and processes is rapidly expanding, and many important experimental and theoretical discoveries have been made in recent years. Statistical physics is key to exploring this new and expanding field, enabling an understanding of real-world phenomena compromised of complex materials or exhibiting complex processes. This book includes lectures presented at the CLXXVI International School of Physics “Enrico Fermi”, held in Varenna, Italy, in July 2010. The school focused on recent advances and developing perspectives in the study of complex materials and processes, as related to physics and biology. The book provides both an introduction and a complete presentation of recent theoretical and experimental developments for each topic. Topics addressed include: scaling and universality, supra-molecular systems and solutions, polymer systems, static and dynamics of liquid water, arrested dynamics and jamming, dynamics of out of equilibrium systems, physics of confined liquids, granular matter, physics of biological and medical systems, networks in physical and social sciences, turbulence in physics, biology and economics and finally, switching phenomena in biology and economics. The book provides reviews of these cutting edge topics by leading authoritie

Chapter

Summary

Wetting transitions in fluid interfaces

Basics on wetting transitions

Line tension

Density functional models: general approach

Higher-order wetting transitions

Overview of other models

Geometrical characterization of dynamical heterogeneities in chemical gels, colloidal gels and colloidal glasses

Introduction

Mode coupling theory and the glass transition

Dynamical heterogeneities

Dynamical susceptibility

Non-Gaussian parameter

Dynamical heterogeneities and mode coupling theory

Dynamical heterogeneities: from chemical gels to structural glasses

Dynamical heterogeneities in chemical gels

Dynamical heterogeneities in colloidal gels

Dynamical heterogeneities in structural glasses

Conclusions

Lectures on molecular- and nano-scale fluctuations in water

Lecture one: tetrahedral condensed matter

Molecular structure

Diffusion

Chemistry in water

Density fluctuations

Electric field fluctuations

Water auto-ionization

Lecture two: Solvation

Solvation free energies

Solvation of small excluded volumes

Solvation of ions

Solvation of large solutes

Lecture three: Hydrophobicity and self-assembly

The driving force for hydrophobic assembly

Micelle assembly

Dewetting transitions in hydrophobic assembly

Theory of dewetting

Applications and hydrophobic collapse

Water and anomalous liquids

An overview on anomalous liquids and water

Thermodynamic anomalies

Dynamic anomalies

Structural anomalies and polymorphism

A few questions

A Hamiltonian model for water

Phase diagram and supercooled water

Water confined between hydrophobic surfaces

Percolating approach

Dynamical crossover

Liquid-liquid phase transitions

Conclusions

Dynamic crossover phenomenon in confined water and its relation to the liquid-liquid critical point: Experiments and MD simulations

The density minimum, peaking of thermal expansion coefficient and equation of state (EOS) of 1-D confined water

Dynamic crossover in the alpha-relaxation times of 1-D and 3-D confined water

Supporting evidence for the dynamic crossover from MD simulationson bulk and confined water and from extended MCT

Evidence for the dynamic crossover phenomenon in other glass-forming liquids

"Uno, Nessuno e Centomila": The intricate structure of confined water

Introduction

Experiment and methods

Results and discussion

Conclusions

Liquid water structure from X-ray spectroscopy and simulations

Introduction

A brief history of water structure

Thermodynamic models

Experiments and theory

Neutron and X-ray diffraction

Structure modeling of experimental datasets

X-ray spectroscopic techniques

Molecular dynamics and small-angle X-ray scattering

Selected results

Sensitivity of diffraction techniques to local coordination in water

X-ray spectroscopic signatures of different structural species

Enhanced small-angle X-ray scattering of ambient and supercooled water

Information on H-bond angles from joint EXAFS and diffraction modeling

Concluding remarks

Particles in fluids

Introduction

Description of the model

Particle motion

Dimensionless equations for particle motion

Numerical scheme

Linked-cell algorithm

Fluid flow

Numerical scheme

Momentum transfer: The particle-fluid coupling

Drag law

Empirical expression of the drag law

Parameters and boundary conditions

Results

Draft, Kiss and Tumbled effect

Description of the effect

Parameters and boundary conditions

Results

Sedimentation of many particles

The empirical law of Richarson and Zaki

Parameters

Results

Velocity distribution in sheared suspensions

Simulation method

Results

Porous media

Fluids in porous media

Various distributions in porous medium

Results on filtration

Saltation

The mechanism of saltation

The numerical wind channel

Results for the saturated flux

Results for the wind profile

Quicksand

Experiments on quicksand

Simulations of quicksand crumbling

Conclusion and outlook

Critical overview of Agent-Based Models for Economics

Introduction

Classical Theory of Economics

Towards complexity

Why Agent-Based Models

Stylized Facts

Absence of simple arbitrage

Fat-tailed distribution of returns

Volatility clustering

Other SF

Stationarity and time scales

Standard Economic Theory

Agent-Based Models

Kim and Markowitz model: an attempt to explain the Black Monday

Aim

Agents and Strategies

Number of agents

Price formation

Origin of SF

Discussion realism/tractability

Self-Organized Criticality

Santa Fe artificial stock market

Aim

Agents and Strategies

Number of agents

Price formation

Origin of SF

Discussion realism/tractability

Self-Organized Criticality

Minority Game

Aim

Agents and strategies

Number of agents

Price formation

SF and their origin

Realism and tractability

Self-Organized Criticality

Caldarelli, Marsili and Zhang: a prototype of stock exchange

Aim

Agents and Strategies

Number of agents

Price formation

Origin of SF

Discussion realism/tractability

Self-Organized Criticality

Lux and Marchesi model

Aim

Agents and strategies

Price formation

SF and their origin

Realism and tractability

Number of agents

Self-Organized Criticality

Giardina and Bouchaud model

Aim

Agents and Strategies

Number of agents

Price formation

Origin of SF

Discussion realism/tractability

Self-Organized Criticality

The destabilizing effect of leverage

Aim

Agents and strategies

Price formation

SF and their origin

Realism and tractability

Number of agents

Self-Organized Criticality

Credit network and bankrupt avalanches

Aim

Agents and strategies

Number of agents

Description of the dynamics

SF and their origin

Realism and tractability

Self-Organized Criticality

Stylized facts as finite-size effects and self-organization of markets

Aim

Agents and strategies

Population dynamics

Price formation

SF and their origin

Number of agents

Self-Organized Criticality

Realism and tractability

Perspectives

Conclusions and perspectives

Long-term memory in climate records and the detection problem

Introduction

Long-term correlations

Quantities of interest

Numerical estimation of the exceedance probability

Estimation of the anthropogenic trend

Conclusion

The Fermi Pasta Ulam (FPU) problem: A path to complexity

Prologue

"In the beginning..." was the FPU Problem

FPU recurrences - numerical studies

FPU recurrences - analytic approaches

The legacy of FPU - The field of nonlinear science

Chaos and fractals

Solitons and coherent structures

Patterns and complex configurations

Intrinsic localized modes (ILMS)

Anomalous heat transport

Reconciling FPU with statistical mechanics

Summary and conclusions

Catastrophic cascade of failures in interdependent networks

Introduction

Single-network robustness

Interdependent networks robustness

Partially dependent networks

Final remarks

The kinetics of the folding/unfolding process of hydrated lysozyme studied by Nuclear Magnetic Resonance

Introduction

Recent studies

Experimental details

Results and discussions

Conclusions

Light scattering enhancement in porphyrin nanocomposites

Water hydration of biopolymers: The case of cellulose in ancient paper - a SANS study

Introduction

Materialsand methods

Results and discussion

Conclusion

Evidence of a finite screening length of the repulsive potential among copolymer micelles in a room temperature ionic liquid

Introduction

Theoretical outline

Sample details and formation of micelles

Determination of interparticle interaction pair potential

Conclusion

Aggregation of porphyrin-based cyclic supramolecular architectures

POSTERS

Effiects of medium-chain alcohols on the structure of phospholipid bilayers

Description

Experimental details

Methods

Results and discussion

Concluding remarks

Deep Inelasting Neutron Scattering experiments on supercooled water

Fluctuations of the Casimir-like force between two inclusions in a biological membrane

Model

Average force

Variance of the pseudo-Casimir force

Conclusion

Liquid-liquid critical point of mixtures of Jagla ramp potential particles and hard spheres

A dynamical model for operational risk in banks

Introduction

The model

Parameters estimation

Forecasting power and VaR

On thepossibility of detecting the liquid-liquid critical point in an aqueous solution of salt

Elenco dei partecipanti

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