152 citations · 267 across the 9 of their papers we have counts for
9 papers
Phase diagram for diblock copolymer melts under cylindrical confinement
Weihua Li, Robert A. Wickham
We extensively study the phase diagram of a diblock copolymer melt confined in a cylindrical nanopore using real-space self-consistent mean-field theory. We discover a rich variety…
Nucleation of stable cylinders from a metastable lamellar phase in a diblock copolymer melt
Robert A. Wickham, An-Chang Shi, Zhen-Gang Wang
The nucleation of a droplet of stable cylinder phase from a metastable lamellar phase is examined within the single-mode approximation to the Brazovskii model for diblock copolymer…
The non-centrosymmetric lamellar phase in blends of ABC triblock and ac diblock copolymers
Robert A. Wickham, An-Chang Shi
The phase behaviour of blends of ABC triblock and ac diblock copolymers is examined using self-consistent field theory. Several equilibrium lamellar structures are observed, depend…
Critical scaling of the a.c. conductivity for a superconductor above Tc
Robert A. Wickham, Alan T. Dorsey
We consider the effects of critical superconducting fluctuations on the scaling of the linear a.c. conductivity, σ(ω), of a bulk superconductor slightly above Tc in zero applied ma…
Phase ordering in bulk uniaxial nematic liquid crystals
Robert A. Wickham
The phase-ordering kinetics of a bulk uniaxial nematic liquid crystal is addressed using techniques that have been successfully applied to describe ordering in the O(n) model. The…
Ordering kinetics of defect structures
Gene F. Mazenko, Robert A. Wickham
We show how the continuity equations expressing conservation of topological point or string defect charge can be used to determine the order-parameter correlation function for the…