Workshop and Summer School on Coulomb Many-body Systems

Summer School: June 6-10,2012 Workshop:June 12-14 ,2012

(More detailed information is available at : http://ins.sjtu.edu.cn/programs/2012/rpcmbs/default.html)

Processes and structures involving electrostatic interactions are abundant in condensed matter and biological systems. Study of Coulomb many body systems is therefore of fundamental importance in various fields of science.

Supported by Shanghai Jiao Tong University (SJTU), Shanghai Association of Science and Technology(SAST) and National Science Foundation of China, we plan to organize an interdisciplinary, international workshop entitled: Recent Progresses on Coulomb Many Body Systems. This workshop will be well focused on the following three issues: 1) Experimental observations of non-mean field behaviors in colloidal and biological systems; 2) Concepts and theories beyond Poisson-Boltzmann theory; 3) Efficient computational techniques for Coulomb many body systems. The purpose of this workshop is to bringing together scientists from different disciplines who are active in the field of Coulomb many body systems, with the aims of exchanging ideas and results, and developing and nurturing interdisciplinary collaborations.

The workshop will last three days, and be held at Shanghai Jiao Tong University, during the week of June 9 -16, 2012. The precise date will be chosen according to the convenience of most attendants. It will consist of a series of informal talks, along with ample time for discussions. In addition, there will be one or two public lecture, tailored to suit a more general audience.

On the behalf of the advisory committee and the organization committee, we cordially invite you to attend this workshop. We very much hope that you will be able to join us in Shanghai to contribute to this workshop.

Scientific Advisory Committee

Scientific Organization Committee

Invited Overseas Speakers (alphabetical order)

Invited Domestic Speakers

Summer School On Charged Systems, June 6-10, 2012


Outline of Lectures

Gerald Manning, Rugters University

Gerald Manning Lecture 1 Gerald Manning Lecture 2 Gerald Manning Lecture 3

The Counterion Condensation Theory of Polyelectrolyte Solutions and Its Applications

I. The thermodynamics of polyelectrolyte solutions and the polyelectrolyte effective charge.

II. The condensation volume, counterion release, and Poisson’s elasticity ratio for a polyelectrolyte.

III. Polyelectrolyte interactions.

We present the basic elements of the counterion condensation theory of polyelectrolyte solutions. We will derive an expression for the free energy of a polyelectrolyte solution and apply it to derivative properties such as the osmotic pressure, ionic activities, and Donnan salt exclusion.The effective charge of a polyelectrolyte is taken as its bare charge minus the charge of the counterions condensed on it. Counterion release from the condensed layer is shown to be a thermodynamic driving force for ligand binding to polyelectrolytes, for example, the binding of cationic drugs to DNA. Counterion release also drives polyelectrolyte order-disorder conformational transitions such as the helix-to-coil transition of DNA. Poisson’s ratio from the theory of elastic rods is derived for a polyelectrolyte and shown to lie outside the range of elastic stability near the counterion condensation critical charge density. Possible mplications for polyelectrolyte conformational stability will be discussed. A theory of attractive interactions of like-charge polyelectrolytes will be presented, based on the behavior of the condensation volume. If time permits, we will point out that counterion condensation occurs in planar and spherical geometry as well as in the cylindrical geometry of linear polyelectrolytes. The experimental literature will be a focus of attention throughout. We will do our best to indicate open questions and to point to possible directions for future fundamental research in polyelectrolyte science.

Jay Tang, Brown University

Polyelectrolyte Properties of Bio-Macromolecules

I. Introduction: an experimentalist’s take on counterion condensation theory Singularity in electric energy electric energy Counterion Distribution
Lateral aggregation/Bundling Monte Carlo simulations II. Assessing effective charges around polyelectrolytes, not as easy as it sounds Zeta potential
Electrophoresis DNA, Fd virus, F-actin Charge Inversion III.Effects of polyelectrolytes on protein filaments Weak transient binding Microtubule assembly and pattern formation IV. Polyelectrolyte effects in nanopore based biophysics DNA Virus translocation

Yan Levin, Instituto de Física, UFRGS

levin 1 levin 2

Statistical Mechanics of Coulomb Systems

I. Debye-Hückel Theory II. Phase Transition in Two-Component Plasmas III. Bjerrum Cluster Formation IV. Critical Point of the Restricted Primitive Model. V. Coulomb gas in d-dimensions VI. Two-Dimensional Plasma and the Kosterliz-Thouless Transition VII. Roughening Transitions and Crystal Growth VIII. 2d One-Component Plasma IX. Colloidal Suspensions X. Charge Renormalization of Colloidal Particles XI. Charge Reversal

John D Weeks, University of Maryland

Derivation and applications of Local Molecular Field theory for systems with long-ranged Coulomb, dipolar and dispersion interactions

Erik Luijten, Northwestern University

Computer simulations of charged systems.