Nano‐ and Micro‐Sized Fe₂O₃ Structures Fabricated by UV Imprint Lithography

Abstract

Iron oxide (Fe 2 O 3 ), and especially hematite, is well known in photoelectrochemical applications such as water splitting and photocatalysis, and can also be used in solar energy conversion. Here, properties of iron oxide nanoparticles are investigated. The differences in the crystallization and refractive index of Fe 2 O 3 nanoparticles, created under varied temperatures, are confirmed and analyzed in this paper. In addition, various nano-to microscale patterns of Fe 2 O 3 nanoparticles enhance their features. UV imprint lithography, one of the simplest lithography procedures, is used to fabricate various iron oxide structures such as nanoholes, pillars, lines, microcones, and moth-eyes on flexible or planar substrates. The optical properties of Fe 2 O 3 patterns as fabricated are measured, and future applications are discussed.

Solution-processable multi-color printing using UV nanoimprint lithography

“…Our asymmetric FP cavity consists of a UV-curable resin sandwiched between two silver metal layers, and represents various colors depending on the thickness of the resin layer. Nanoimprint lithography is one of the most promising lithographic technologies, because it can generate patterns with a high resolution of 10 nm over a large area with high productivity at a low cost [21][22][23][24][25][26][27][28][29][30][31]. UV-assisted imprint lithography is a type of soft nanoimprint lithography.…”