Selective 3-dimensional patterning during phase separation of a continuously laminated layer

TL;DR

This paper presents a method to control three-dimensional pattern formation during phase separation by continuous lamination, enabling the creation of materials with tailored internal structures for enhanced properties.

Contribution

It introduces a novel approach combining phase separation with continuous lamination to selectively produce various internal patterns in materials.

Findings

Different patterns (droplet, lamellar, cylindrical) depend on lamination rate

The dynamics and mechanisms of pattern formation are elucidated

Potential for creating new functional materials through pattern control

Abstract

Control over the physical properties of materials is ubiquitously required in many fields. One means by which this can be achieved is controlling the internal structure of multi-component materials with an eye to enhancing mechanical properties. Here, we focus on self-organized pattern formation in phase separating materials, where microscopic patterns with a smooth, continuous connection may be realized. We propose a feasible method to control pattern formation using phase separation combined with continuous ``lamination'' of material, when material is continuously and homogeneously layered on top of a base. We find that a random droplet pattern, a lamellar pattern, and a cylindrical pattern are formed depending on the lamination rate $V$. We clarify the dynamics of pattern formation, focusing on the mechanism. This study may lead to the creation of new functional materials through artificial pattern control.