Hierarchical Assemblies and Non-equilibrium Structures

T. P. RussellPolymer Science and Engineering DepartmentUniversity of Massachusetts Amherst, MA

GyroidA B

LamellaB Sph.

A Cyl

A Sph.

B Cyl

ODTDisordered

fA (A component Volume Fraction)

Block copolymer morphology

Directed Self-Assembly

• External Fields• Interfacial interactions• Electric fields• Thermal fields• Capillary force• Solvent evaporation• Flow

• Coupled fields• Gradient fields

Biased Self-Directed Self-Assembly

E-Field AlingmentMF Simlations

Generation of Long Range Order

SolventEvaporation

S

Ordered

Disordered

Highly MobileSurface

N

Solvent Casting

m

WetDry

Swelling, Ordering

20 nm

CdSe Nanorods in Electric Field

~30nm x ~6nm CdSe nanorods in PMMA (30%w/w)

from CHCl3 under 10V/mm Electric field

Systems

CdSe Nanoparticle(3-6nm)

CPMV(~30nm)

Ferritin(~12nm)

PO PO

PPOPO O

Toluene/Water Water/Perfluorodecalin

-SH and -NH2 groups

Synergistc AssembliesMetrics of Order

Tomography, Metrics