IRTG%1524/ΔMRSEC%€¦ · PosterList 1 Agudo Jaime...
Transcript of IRTG%1524/ΔMRSEC%€¦ · PosterList 1 Agudo Jaime...
IRTG 1524/ΔMRSEC
Summer School 2014
Self-‐Assembly in Soft-‐Matter Systems
Beverly, Massachusetts, USA August 03–08, 2014
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Poster List
1Ag
udo
Jaim
eEn
gulfm
ent P
atterns o
f Nanop
articles o
n Mem
branes
2Armstrong
Daniel
The Use of H
igh Dielectric Con
stant Liquids in Dielectric Elastom
er Actuators
3Ch
ristau
Step
hanie
Polymer Brush/G
old Nanop
article Hybrid
s: (1
) Mutual structural effe
cts o
n particle distrib
ution and (2) e
ffect of tem
perature on particle uptake and distrib
ution
4Fu
Lin
Theo
retical and
Com
putatio
nal Study of C
olloidal M
agne
tic Assem
bly
5Falk
Caroline
Conformational transition
s of d
s-‐DN
A with
in ultrathin am
phiphilic film
s6Ru
tkow
ski
David
Desig
n of M
ultip
olar Colloidal Rod
s Usin
g Discon
tinuo
us M
olecular Dynam
ics
7Ko
gler
Florian
Aggregation of colloids w
ith field indu
ced patchine
ss8Gu
Re
npen
gTo
wards Engineered Biologically-‐In
spire
d Materials: Facile Synthesis of DNA Block Co
polymers
9Meißn
erJens
Protein Ad
sorptio
n at nano-‐structured
Silica Surfaces: Effe
cts o
f Salt a
nd Surface Ionisatio
n10
Phillips
Katherine
Simulation Stud
ies o
f the
Selectiv
ity of Ion
s in Ch
arged Carbon
Nanotub
e Bu
ndles
11Obe
rleMichael
Compe
tititv
e Protein adsoption on
to polym
eric m
aterial: The case of m
icrogels
12Marcoux
Catherine
Self-‐assembly of a limit-‐pe
riodic structure
13Schlotthauer
Sergej
Disclination lines at h
omogen
eous and
heterogen
eous colloids immersed in chiral liquid crystal
14Ha
nKo
ohee
Prototypes of Soft R
obotic Com
pone
nts B
ased
on Novel Dynam
ic Patterns from M
etallo-‐Dielectric M
icrocube
s Driv
en by External Fields
15Tavarone
Raffa
ele
Mon
te Carlo simulation for switchable mod
el m
olecules
16Wu
Wie-‐Che
nLarge-‐Scale Silica Overcoatin
g of Gold Nanorod
s and
The
ir Thermal Stability
17Tsereteli
Levan
Coarse graining and mon
te carlo simulation of polysaccharides
18Mish
raSumeet
Aniso
trop
ic re
spon
se of e
lastom
eric m
edia con
taining magne
tic chains
19Pe
rez-‐Ga
rcia
Rodrigo
Control of fullerene
(C60) n
ucleation by nanoind
entatio
ns20
Simon
Joseph
Hierarchically structured
materials comprise
d of biologically inspire
d po
lype
ptides
21Sokolowski
Marek
The investigation of th
e interaction be
tween po
lymer m
odified
silicon
nano-‐particles a
nd pho
spho
lidmem
branes
22Seo
Youn
gee
Physicoche
mical aspects of p
oly (2-‐oxazoline)s b
ased
polym
eric m
icelles a
nd th
eir clusters
23Steinküh
ler
Jan
Adhe
sion-‐indu
ced do
main form
ation in m
ulticom
pone
nt m
embranes
24Lamas
Joseph
Photorespo
nsive DN
A with
Click Ch
emistry
25Stolarski
Michael
Recent stud
ies in the fie
ld of stark sp
ectroscopy and
DHP
26Li
Alice
Self-‐im
mob
ilizatio
n of Stim
uli-‐respo
nsive Biom
olecules on Surface via Silica Bind
ing Pe
ptide
Lecturers Tutorials Talks
Zemb Thomas Surfactant-‐free micelles and microemulsions
Szleifer Igal Understanding pH Effects in Soft Materials
Heinrich Volkmar Biological Intuition vs. Physical Rigor: Allies or Foes?
Hagan Michael Computational studies of virus assembly around nucleic acids and on lipid membranes
Schmid Friederike Self-‐Consistent Field Theories of Inhomogeneous (Co)polymer blends
Hellweg Thomas Nanosecond dynamics in soft matter as seen by neutron spin-‐echo spectroscopy (NSE)
Szleifer Igal Molecular Organization and Translocation in Nuclear Pore Complexes
Zemb Thomas Organisation of surfaces: the in-‐plane equation of state at fluid interfaces
Reiter Günter Unique features of polymer crystallisation visualized in thin films
Reiter Günter Correlating Polymer Crystals via Self‐Induced Nucleation
Walker Lynn Soft Materials with fluid-‐fluid Interfaces: We need more than just interfacial tension
Rubinstein Michael Scaling theory of micellization of block copolymers in selective solvents
Hellweg Thomas Smart microgels and microgel nanoparticle hybrids: Properties, characterization, and potential applications
Schmid Friederike On ripples and rafts: Curvature induced nanoscale structures in lipid membranes
Heinrich Volkmar Practical Membrane Biophysics
Hagan Michael Principles of self-‐assembly, from 1D filaments to 2D shells and 3D crystals
Rubinstein Michael Weak micellization of block elastin-‐like copolymers
Walker Lynn Complex Solutions to Control Systems with Fluid-‐Fluid Interfaces
Zemb, Thomas Surfactant-‐free micelles and microemulsions Is this an old urban legend or a useful opportunity for new formulations? We will review findings concerning ouzo, pastis, mouth washes , lemoncello and model ternary systems with surfactant containing a "pre-‐ouzo" domain. Structural evidence by scattering revive the debate and the search for a general explanation. We will corpus of observations and formulate a proposition based on hydration cooperative forces perturbed non electrolytes distribution near fluid interfaces. Notes: Szleifer, Igal Understanding pH Effects in Soft Materials Acid-‐base equilibrium is a chemical reaction that involves a different number of charged species in the reactant and the product. Therefore, shifting the chemical equilibrium provides a way to turn on and off, or tune, electrostatic interactions. The treatment of acid-‐base equilibrium is usually based on bulk solution behavior. In this lecture we will describe how acid-‐base equilibrium within a soft material is qualitatively and quantitatively different than that in bulk solution. This is due to the ability of the soft material to respond with structural changes to the presence (or absence) of charges. As a result there is a coupling between the molecular organization of the material, the chemical state and the physical interactions (which include electrostatic, steric and van der Walls). We will present a systematic approach of how to theoretically describe the coupling between molecular organization, physical interactions and chemical state. The predictions show emergent behavior and it provides with new insights on the importance of the local variation of chemical equilibrium. Namely, the assumption often done of a fixed state of charge similar to that of bulk solution provides an incorrect picture. The importance of this effect depends on the degree of nanoconfinement. We will show examples starting from simple ligand covered nanoparticles, to polymer brushes, where pH changes can lead to novel self-‐assembled patterns with the final examples being pH responsive gels. One of the interesting finding is the dual role that salt concentration plays of screening electrostatic interactions while enhancing the charge in the system. This effect leads to a non-‐monotonic dependence of the swelling of both polymer brushes and gels on salt concentration. The relevance of these effects in soft materials in general and biological environments in particular will be discussed. Notes:
Heinrich, Volkmar Biological Intuition vs. Physical Rigor: Allies or Foes? A fundamental rule of research at the crossroads of the physical and life sciences seems to be that the product of "first-‐principle joy" and biomedical usefulness is constant. Yet in view of the inherently cross-‐disciplinary nature of many aspects of biomedicine, there can be no doubt that future breakthroughs will require new, interdisciplinary strategies. This talk provides an introduction to immunophysics, an emerging field that strives to alleviate gaps in our knowledge of how immune cells recognize—or fail to recognize—pathogens. Future-‐oriented analyses of single-‐live-‐cell encounters with microbes should be integrative, encompassing the spectrum of mechanisms by which immune cells home in on (by chemotaxis), take hold of (through adhesion), and internalize (by phagocytosis) microbial pathogens. We will discuss how biophysical approaches examining one-‐on-‐one encounters between immune cells and microbes allow us to study single-‐cell chemotaxis, adhesion, and phagocytosis. These experiments have been validated with various types of human immune (and other) cells, and have already revealed insight into cellular behavior that had been inaccessible to traditional techniques. Notes: Hagan, Michael Computational studies of virus assembly around nucleic acids and on lipid membranes For many viruses, the spontaneous assembly of a capsid shell around the nucleic acid (NA) genome is an essential step in the viral life cycle. Understanding how this process depends on the charge, structure, and sequence of the nucleic acid could promote biomedical efforts to block viral propagation and guide the reengineering of capsids for gene therapy applications. This talk will describe coarse-‐grained models of capsid proteins and NAs which enable dynamical simulations of the assembly process. With these models, we investigate how assembly efficiency and mechanisms depend on biophysical parameters, such as RNA length and structure, solution conditions, and capsid protein charge. We find that capsids spontaneously ‘overcharge’; that is, the NA length which is kinetically and thermodynamically optimal possesses a negative charge greater than the positive charge of the capsid. When applied to specific virus capsids, the calculated optimal NA lengths closely correspond to the natural viral genome lengths. These results suggest that the features included in this model (i.e. electrostatics, excluded volume, and NA tertiary structure) play key roles in determining assembly thermodynamics and consequently exert selective pressure on viral evolution. We then show that assembly can proceed through two qualitatively different classes of pathways, which can be tuned by controlling solution conditions or changing the capsid protein charge. Time permitting, we will also discuss how viruses assemble on a substrate with a different topology – an enveloping lipid membrane. Notes:
Schmid, Friederike Self-‐Consistent Field Theories of Inhomogeneous (Co)polymer blends The course gives an introduction into basic concepts of the theory of polymer/copolymer blends, with a particular emphasis on the so-‐called 'self-‐consistent field theory' (SCF theory). The topics to be covered include: – General introduction in polymer models – Flory Huggins theory and chi-‐parameter – Detailed introduction into SFC theory – Limiting behaviour at strong and weak segrgation – Fluctuation effects – Introducing time – Applications Notes: Hellweg, Thomas Nanosecond dynamics in soft matter as seen by neutron spin-‐echo spectroscopy (NSE) Neutron spin-‐echo spectroscopy (NSE) was invented in the 1970s by F. Mezei [1]. Among all quasielastic and inelastic neutron scattering techniques NSE provides the highest energy resolution, which is in the range of nano-‐eV. This technique is especially well suited to study thermally excited dynamics in self-‐assembled colloids (micelles, microemulsion droplets, lamellar phases, etc.). The tutorial will introduce the basics of this experimental approach and afterwards give some examples for its application to lipid vesicles [2], polymer based lamellar phases, proteins and gel networks. [1] F. Mezei. C. Pappas, T. Gutberlet: Neutron Spin Echo Spectroscopy: Basics, Trends and Applications (Lecture Notes in Physics), Springer, 2003 [2] Arriaga, L. R., Lopez-‐Montero, I., Monroy, F., Orts-‐Gil, G., Farago, B., & Hellweg, T.: Stiffening Effect of Cholesterol on Disordered Lipid Phases: A Combined Neutron Spin Echo plus Dynamic Light Scattering Analysis of the Bending Elasticity of Large Unilamellar Vesicles, Biophys.J., 96, 3629-‐3637, 2009 Notes:
Szleifer, Igal Molecular Organization and Translocation in Nuclear Pore Complexes In this talk we will describe theoretical predictions for the molecular structure of yeast Nuclear Pore Complex (NPC) and the translocation of model particles. The theoretical approach that we apply is a molecular theory that accounts for the geometry of the pore and the sequence and anchoring position of the unfolded domains of the nucleoporin proteins (the FG-‐Nups), which control selective transport through the pore. The theory explicitly models the electrostatic, hydrophobic, steric, conformational and acid-‐base properties of the FG-‐Nups. The electrostatic potential within the pore, which arises from the specific charge distribution of the FG Nups, is predicted to be negative close to pore walls and positive along pore axis. The positive electrostatic potential facilitates the translocation of negatively charged particles and the free energy barrier for translocation decreases for increasing particle hydrophobicity. The above results agree with the experimental observation that transport receptors which form complexes with hydrophilic/neutral or positively charged proteins to transport them through the NPC, are both hydrophobic and strongly negatively charged. The molecular theory shows that the effects of electrostatic and hydrophobic interactions on the translocating potential are cooperative and non-‐equivalent due to the interaction-‐dependent reorganization of the FG-‐Nups in the presence of the translocating particle. The combination of electrostatic and hydrophobic interactions can give rise to complex translocation potentials displaying a combination of wells and barriers, in contrast to the simple barrier potential observed for a hydrophilic/neutral translocating particle. This work demonstrates the importance of explicitly considering the amino acid sequence and hydrophobic, electrostatic and steric interactions in understanding the translocation through the NPC. Notes: Zemb, Thomas Organisation of surfaces: the in-‐plane equation of state at fluid interfaces Equations of state are expressed either as a link of pressures, temperature and volume per molecule or in integral form by a free energy functional d depending on temperature and composition This started in 3 dimensions with the van der Waals gas, and is equivalent in the domain of colloids used by Jean Perrin over a century ago. We will show in this lesson that a "lateral" equation of state allows to understadn and unify approach to fluid-‐surfaces. Examples will be taken at the liquid-‐air interface, the liquid-‐liuqid interfaces. This has been extended in the seventies to dispersed bilayers and more recently to mono-‐layered vesicles. In a second part, we will show how teh determination of lateral equations of state in known portions of phase diagrams has allowed to derive general quantities, such as overall hydration of glycolipids, modulation of electrostatic effects by ion specific or chaotopic/comsotropic effects or even neutrla bilayer systems stabilized by hydration forces. Notes:
Reiter, Günter Unique features of polymer crystallisation visualized in thin films Mono-‐lamellar single crystals in thin films provide suitable model systems for studying crystallisation of long chain polymers, making distinct differences with respect to small molecules visible. Due to the high viscosity of polymeric melts, transport toward the growth front is slow and the corresponding crystal growth can suitably be followed in time. Besides being able to investigate generic processes in controlling crystal morphology like epitaxial growth or growth front instabilities, thin film studies reveal unique features of polymer crystallisation. In particular, it is possible to observe a logarithmic spatiotemporal evolution of the lamellar crystal thickness, caused by continuous rearrangements leading to regions of differing degrees of meta-‐stability within polymer single crystals. As a consequence of the kinetically determined lamellar thickness and the corresponding variations in melting temperature, polymer crystals allow for self-‐seeding, i.e., crystals can be re-‐grown from a melt which contains a few thermodynamically stable remnants of pre-‐existing crystals acting as seeds. Hence, when a single crystal is molten, all remnants have a unique orientation and thus also the crystals re-‐grown from these seeds. The logarithmic time-‐dependence of the variation in crystal thickness is reflected in a number of seeds decreasing exponentially with increasing seeding temperature. Despite their molecular complexity and some unique features, polymers proved to be valuable systems for detailed studies of crystal growth, allowing testing of theoretical concepts of morphology development.
Reiter, Günter Correlating Polymer Crystals via Self-‐Induced Nucleation H. Zhang, M. Yu, B. Zhang, R. Reiter, M. Vielhauer, R. Mülhaupt, J. Xu, and G. Reiter* Crystallizable polymers often form multiple stacks of uniquely oriented lamellae, which have good registry despite being separated by amorphous fold surfaces. These correlations require multiple synchronized, yet unidentified, nucleation events. Here, we demonstrate that in thin films of isotactic polystyrene, the probability of generating correlated lamellae is controlled by the branched morphology of a single primary lamella. The nucleation density ns of secondary lamellae is found to be dependent on the width w of the branches of the primary lamella such that ns � w−2. This relation is independent of molecular weight, crystallization temperature, and film thickness. We propose a nucleation mechanism based on the insertion of polymers into a branched primary lamellar crystal. Even in single crystals, characterized by faceted structures with a well-‐defined envelope reflecting the underlying crystal unit cell, polymers are folded and thus in a meta-‐stable state. Annealing such meta-‐stable single crystals allowed to unveil the initial morphological framework of a dendritic single crystal, i.e. the initial stages of growth.
Notes:
Walker, Lynn Soft Materials with Fluid-‐fluid Interfaces: We need more than just interfacial tension Fluid-‐fluid interfaces provide exciting potential for materials development. These distinct interfaces attract amphiphilic species; including macromolecular species, colloidal particles, proteins, bacteria and other objects of interest to the field of soft matter. These same interfaces can be deformed, processed, altered by external fields and manipulated using many of the same tools that are central to the field. In this tutorial, the basic forces at play in manipulation of fluid-‐fluid interfaces will be discussed along with characterization approaches and tools. Important in processing and developing interface-‐dominated materials is the timescales associated with adsorption at interfaces and transport to interfaces. Dynamic surface tension will be considered as a probe of transport to and from an interface to connect interfacial and bulk diffusion properties. Also important are the mechanical properties of interfaces. Examples of different types of complex interfaces will be presented and the tools used to probe mechanical properties described. Impact on processes like interfacial deformation, break-‐up and coalescence will be explained. The goal is to provide participants with an overall sense of the state of the art in fluid-‐fluid interfaces. Notes: Rubinstein, Michael Scaling theory of micellization of block copolymers in selective solvents Scaling concepts in polymer physics will be reviewed. Swelling of isolated polymers in good solvents and their collapse in poor solvents will be discussed using the concept of thermal blob. Basic properties of many overlapping chains in semidilute polymer solutions will be introduced. Chains densely tethered at one end to the surfaces, called polymer brushes, will be described. Properties of brushes in good, theta, and poor solvents will be described and generalized from planar to cylindrical and spherical cases. Self-‐assembly of block copolymers in selective solvents will be introduced as an application of scaling theory to polymer self-‐assembly. Predictions of scaling theories will be compared with experimental results. The self-‐assembly of synthetic diblock copolymers has been extensively studied both experimentally and theoretically. In contrast, polypeptide diblock self-‐assembly has so far been studied mostly experimentally. We extend and generalize the theory developed for synthetic diblock copolymers to make it applicable for elastin-‐like diblock polypeptides. We demonstrate that these diblock polypeptides self-‐assemble into the so-‐called weak micelles with almost unstretched coronas, a state not observed for synthetic diblock copolymers. Such micelles are expected to form when surface tension at the core-‐corona interface is low compared to what is expected from the dense state of the core. The predictions of the theory of weak micelles for critical micelle temperature, hydrodynamic radius, and micelle aggregation number are in reasonable agreement with the experimentally measured values. Notes:
Hellweg, Thomas Smart microgels and microgel nanoparticle hybrids: Properties, characterization, and potential applications Microgels based on poly(N-‐isopropylacrylamide) (PNIPAM) belong to the class of so called smart materials, which are able to respond upon changes of an external parameter like e.g. temperature by changes in particle dimensions. This contribution will briefly review the properties of these materials. An interesting application of such colloids is the preparation of monolayer films from these particles [1,2]. Microgels are non-‐covalently attached to a surface allowing us to use them on a broad variety of (charged) surfaces. This is a major advantage as compared to approaches relying on covalent attachment of active films. The shape of the coated substrate shouldn't be of importance. Such thermoresponsive poly(N-‐isopropylacrylamide) (PNIPAM) microgel films are shown to allow controlled detachment of adsorbed vertebrate cells via simply changing the temperature. Cell response occurs on the timescale of several minutes, is reversible, and allows to harvest vertebrate cells in a mild fashion [3]. Moreover, to create interesting optical properties responsive microgels can be combined with nanoparticles [4]. Also examples for such hybrid systems will be discussed (e.g. [5]). [1] Schmidt, S., H. Motschmann, T. Hellweg, and R. von Klitzing: Thermoresponsive surfaces by spin-‐coating of PNIPAM-‐co-‐PAA microgels. A combined AFM and ellipsometry study. POLYMER, 49: 749-‐756, 2008 -‐-‐-‐-‐-‐ [2] Schmidt, S., T. Hellweg, and R. von Klitzing: Control of the packing density of P(NIPAM-‐co-‐AA) microgel films: Effect of surface charge, pH, and preparation technique. Langmuir, 24: 12595-‐12602, 2008. -‐-‐-‐-‐-‐ [3] Schmidt, S.,M. Zeiser, Th. Hellweg, C. Duschl, A. Fery, and H. Möhwald: Adhesion and Mechanical Properties of PNIPAM Microgel Films and their Potential Use as Switchable Cell Culture Substrates. Adv. Func. Mater., 20:3235–3243, 2010. -‐-‐-‐-‐-‐ [4] Hellweg, T.: Responsive Core-‐Shell Microgels: Synthesis, Characterization, and possible Applications. J. Polymer Sci., Part B Polymer Physics, 51:1073-‐1083, 2013 -‐-‐-‐-‐-‐ [5] Karg, M., T. Hellweg, P. Mulvaney: Self-‐Assembly of Tunable Nanocrystal Superlattices Using Poly-‐(NIPAM) Spacers, Adv. Func. Mater., 21:4668-‐4676, 2011 Notes: Schmid, Friederike On ripples and rafts: Curvature induced nanoscale structures in lipid membranes Biomembranes are ubiquitous in all living matter. They are essential for compartmentalization and controlling processes that are central for life such as transport or signalling. The basic frame of a biomembrane is a bilayer of self-‐assembled lipids, in which proteins are incorporated that perform various biological functions. Whereas research has long focussed on the membrane proteins, the role of the lipid bilayer for controlling and organizing the proteins is more and more acknowledged. This implies that important biological processes are driven or at least strongly influenced by physical processes. For physicists, membranes have many fascinating aspects: First, they are beautiful examples of self-‐assembled mesoscale structures, second, they are real-‐life examples of two-‐dimensional fluctuating manifolds in space, and third, they have a rich phase behavior, and all of these aspects contribute to the biological function of membranes. The talk will start with a short introduction to membranes and lipid bilayers, and then focus on our own work in this area. I will present a simple coarse-‐grained simulation model for lipids which reproduces many important properties of lipid bilayers. Furthermore, I will discuss an elastic theory that predicts the spontaneous formation of nanoscale structures in lipid bilayers which locally phase separate between two phases with different spontaneous monolayer curvature. The theory rationalizes in a unified manner the observation of a variety of nanoscale structures in lipid membranes: Rippled states in one-‐component membranes, lipid rafts in multicomponent membranes. Both have been observed in our generic simulations, with properties that are compatible with experimental observations and with our elastic model. Literature: [1] F. Schmid, Phys. Rev. Lett. 111, 028303 (2013). -‐-‐-‐-‐-‐ [2] S. Meinhardt, R.L.C. Vink, F. Schmid, PNAS 119, 4476 (2013). -‐-‐-‐-‐-‐ [3] O. Lenz, F. Schmid, Phys. Rev. Lett. 98, 058104 (2007). Notes:
Heinrich, Volkmar Practical Membrane Biophysics This tutorial presents an overview of experiments that have contributed the bulk of today's quantitative insight into the behavior of membranes. Micropipetting in particular has allowed us to establish physical membrane properties like permeability, cohesive strength, and various elastic moduli. The analysis of membrane shapes – including nanotubes called "tethers" – has led to a firm grasp of the mechanical behavior of artificial membranes. Some of this insight has inspired neat examples of "biophysics in reverse". For instance, the idea to employ human red blood cells as force transducers has been soundly validated both theoretically as well as experimentally, and successfully translated into a device uniquely capable of measuring minuscule mechanical forces. Unfortunately though, a deep gulf divides the biophysical behavior of "simple" membranes (such as of vesicles or red blood cells) and that of membranes of living cells. Some prospects – and limitations – of biophysical studies of "real" cell membranes will be discussed. Notes: Hagan, Michael Principles of self-‐assembly, from 1D filaments to 2D shells and 3D crystals. Self-‐assembly refers to the process by which basic units spontaneously form structures with increased size and complexity. In this lecture I will discuss some of the general principles which govern the thermodynamics and kinetics of self-‐assembly processes. As example systems, I will focus on the assembly of 1D filaments and 2D shells (icosahedral viral capsids). I will then discuss relationships between self-‐assembly and crystallization. Notes:
Rubinstein, Michael Weak micellization of block elastin-‐like copolymers The self-‐assembly of synthetic diblock copolymers has been extensively studied both experimentally and theoretically. In contrast, polypeptide diblock self-‐assembly has so far been studied mostly experimentally. We extend and generalize the theory developed for synthetic diblock copolymers to make it applicable for elastin-‐like diblock polypeptides. We demonstrate that these diblock polypeptides self-‐assemble into the so-‐called weak micelles with almost unstretched coronas, a state not observed for synthetic diblock copolymers. Such micelles are expected to form when surface tension at the core-‐corona interface is low compared to what is expected from the dense state of the core. The predictions of the theory of weak micelles for critical micelle temperature, hydrodynamic radius, and micelle aggregation number are in reasonable agreement with the experimentally measured values. Notes: Walker, Lynn Complex Solutions to Control Systems with Fluid-‐Fluid Interfaces Systems involving interfaces between immiscible fluids offer a challenge for materials design. Static interfacial/ surface tension is often the only parameter considered in the design of systems with fluid-‐fluid interfaces. In foams, emulsions, blends, sprays, droplet-‐based microfluidic devices and a number of other applications, the dynamic nature of surface active species and deformation of interfaces requires a more detailed characterization of the interfacial transport and dynamic interfacial properties. Macroscopic properties and the ability to tune and control phenomena requires an improved understanding of the time-‐dependent properties of the interfacial tension and interfacial mechanics. We have developed tools and approaches to quantify the impact of surface active species on interfacial behavior. Simple surfactants at interfaces make evident the need to characterize timescales in the adsorption problem. Polymer-‐grafted nanoparticles show the ability to bridge between macromolecular and particulate (Pickering) laden interfaces. Competitive adsorption of macromolecular species demonstrates the complexity associated with designing treatments for oil dispersion. This talk will provide the motivation to use microscale interfaces for efficient analysis of complex interfacial phenomena and how that relates to the material properties of interface-‐dominated materials. Notes:
Summer Schoo
l 201
4 „Self-‐A
ssem
bly in Soft M
atter S
ystems“
Directors
G. Lóp
ez (Δ
MRSEC
), M. Schoe
n (IR
TG 1524)
Date
August 03–
08 (a
rrival Aug 03, dep
arture Aug 09)
Venu
e Th
e Wylie In
n an
d Co
nferen
ce Cen
ter, Be
verly
MA
Prog
ram
Sun 08
/03
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/07
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am
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pm Boa
rding
02:00–
06:00 pm
Wha
le watch
Excursion in Gloucester
02:30–
05:30 pm
Spare tim
e 02
:00–
04:00 pm
Talks
Walker/Ru
binstein
Roo
m: N
ewbu
rypo
rt
04
:30–
05:30 pm
Spare tim
e 04
:30–
05:30 pm
Spare tim
e 06
:00–
07:30 pm
Spare tim
e/Glou
cester
04
:00–
04:15 pm
Break
06:00–
07:00 pm
Get to
gether
Room
: Atrium
05:30–
07:30 pm
Talks
Heinrich/Hagan
Room
: New
burypo
rt
05:30–
07:30 pm
Talks
Szleife
r/Zemb
Room
: New
burypo
rt
07:30 pm
De
parture/Glou
cester
05:30–
07:30 pm
Talks
Schm
id/H
ellweg
Room
: New
burypo
rt
04:15–
06:30 pm
Po
ster prize aw
ard/
Pane
l disc
ussio
n/
Feed
back
Room
: New
burypo
rt
07:30 pm
Dinn
er
Room
: Atrium
08:00 pm
Dinn
er
Room
: Tup
per M
anor
08:00 pm
Dinn
er
Room
: Tup
per M
anor
08:00 pm
Ba
rbecue
Ro
om: Tup
per M
anor
08:00 pm
Dinn
er
Room
: Tup
per M
anor
07:00 pm
Dinn
er
Room
: Tup
per M
anor
IRTG 1524 Summer School 08/03/14–08/08/14 in Beverly, MA, USA – Participants
Agudo, Jaime Max-‐Planck-‐Institut für Kolloid-‐ und Grenzflächenforschung, Potsdam [email protected], David North Carolina State University, Raleigh [email protected], Bhuvnesh North Carolina State University, Raleigh [email protected], William Texas State University, San Marcos [email protected], Stephanie Technische Universität Berlin [email protected]‐berlin.deErdmann, Petra Technische Universität Berlin petra.erdmann@tu-‐berlin.deFalk, Caroline Humboldt-‐Universität zu Berlin [email protected]‐berlin.deFliegner, Daniela Technische Universität Berlin daniela.fliegner@tu-‐berlin.deFu, Lin Duke University, Durham [email protected], Jan North Carolina State University, Raleigh [email protected], Renpeng Duke University, Durham [email protected], Michael Brandeis University, Waltham [email protected], Koohee North Carolina State University, Raleigh [email protected], Volkmar University of California, Davis [email protected], Thomas Universität Bielefeld thomas.hellweg@uni-‐bielefeld.deKlapp, Sabine Technische Universität Berlin [email protected]‐berlin.deKogler, Florian Technische Universität Berlin [email protected]‐berlin.deLamas, Joseph Texas State University, San Marcos [email protected], Alice Duke University, Durham [email protected], Catherine Duke University, Durham [email protected]ßner, Jens Technische Universität Berlin [email protected]‐berlin.deMishra, Sumeet North Carolina State University, Raleigh [email protected], Michael Helmholtz Zentrum Berlin michael.oberle@helmholtz-‐berlin.dePerez-‐Garcia, Rodrigo Max-‐Planck-‐Institut für Kolloid-‐ und Grenzflächenforschung, Potsdam Rodrigo.Perez-‐[email protected], Katherine North Carolina State University, Raleigh [email protected], Günher Albert-‐Ludwigs-‐Universität Freiburg [email protected]‐freiburg.deRiegler, Hans Max-‐Planck-‐Institut für Kolloid-‐ und Grenzflächenforschung, Potsdam [email protected], Michael University of North Carolina, Chapel Hill [email protected], David North Carolina State University, Raleigh [email protected], Sergej Technische Universität Berlin [email protected], Friederike Johannes-‐Gutenberg-‐Universität Mainz friederike.schmid@uni-‐mainz.deSchoen, Martin Technische Universität Berlin [email protected]‐berlin.deSeo, Youngee University of North Carolina, Chapel Hill [email protected], Joseph Duke University, Durham [email protected], Marek Technische Universität Berlin marek-‐[email protected], Marina University of North Carolina, Chapel Hill [email protected]ühler, Jan Max-‐Planck-‐Institut für Kolloid-‐ und Grenzflächenforschung, Potsdam [email protected], Michael Technische Universität Berlin [email protected], Igal Northwestern University, Evanston [email protected], Raffaele Technische Universität Berlin [email protected], Levan Max-‐Planck-‐Institut für Kolloid-‐ und Grenzflächenforschung, Potsdam [email protected], Lynn Carnegie Mellon University, Pittsburgh [email protected], Wei-‐Chen North Carolina State University, Raleigh [email protected], Stefan Duke University, Durham [email protected], Thomas Max-‐Planck-‐Institut für Kolloid-‐ und Grenzflächenforschung, Potsdam [email protected]