Anisotropic nanoparticle distribution in block copolymer model defects

TL;DR

This study uses self-consistent field theory simulations to explore how anisotropic nanoparticles, such as rods and disks, behave within block copolymer defects, revealing orientation control near defect centers for advanced nano material design.

Contribution

It introduces the behavior of anisotropic nanoparticles in block copolymer defects, highlighting orientation control, which differs from prior spherical nanoparticle studies.

Findings

Anisotropic particles align with preferred orientations near defect centers.

Defect structures enable precise control of nanoparticle placement.

Results aid in designing functional nano materials.

Abstract

In this article, we study the thermodynamic behavior of anisotropic shape (rod and disk) nanoparticle within the block copolymer matrix by using self-consistent field theory (SCFT) simulation. In particular, we introduce various defect structures of block copolymers to precisely control the location of anisotropic particles. Different from the previous studies using spherical nanoparticles within the block copolymer model defects, anisotropic particles are aligned with preferred orientation near the defect center due to the combined effects of stretching and interfacial energy of block copolymers. Our results are important for precise controlling of anisotropic nanoparticle arrays for designing various functional nano materials.