Fast Fabrication of Sub-200-nm Nanogrooves using Liquid Crystal Material

TL;DR

This paper presents a rapid, efficient method for fabricating sub-200-nm nanogrooves using liquid crystal sublimation and recondensation, enabling quick patterning and potential applications in LC alignment.

Contribution

The authors introduce a novel, fast fabrication process for nanogrooves leveraging liquid crystal sublimation and recondensation, achieving sub-200-nm features in under 30 minutes.

Findings

Nanogrooves with sub-200-nm scale are produced rapidly.

The process can be completed in less than 30 minutes.

The platform serves as an alignment layer for other LC materials.

Abstract

Self-assembly of soft materials attracts keen interest for patterning applications owing to its ease and spontaneous behavior. We report the fabrication of nanogrooves using sublimation and recondensation of liquid crystal (LC) materials. First, well-aligned smectic LC structures are obtained on the micron-scale topographic patterns of the microchannel; then the sublimation and recondensation process directly produces nanogrooves having sub-200-nm scale. The entire process can be completed in less than 30 min. After it is replicated using an ultraviolet-curable polymer, our platform can be used as an alignment layer to control other guest LC materials.