Ink‐Bath Interactions in Embedded Ink Writing for Producing Functional Parts

作者：Cheng Zhang, Weijian Hua, Katy Juárez, Kellen Mitchell, Wenyu Ning, Weiliang Shi, Jiangtao Hao, Fei Duan, Wenbo Jin, Jun Zhang, Yifei Jin, Danyang Zhao · 发表于：Advanced Materials Technologies · 年份：2025 · DOI：10.1002/admt.202401693 · 被引用次数：3 · 研究领域：Additive Manufacturing and 3D Printing Technologies、Nanofabrication and Lithography Techniques、Innovations in Concrete and Construction Materials

Abstract Embedded ink writing (EIW) is an emerging 3D printing technique that is extensively applied for a variety of engineering applications. This technique is featured by printing a liquid functional ink within a yield‐stress fluid bath. Due to the selection of ink and bath materials with different hydrophilicity and hydrophobicity, diverse ink‐bath interactions occur that affect the filament formation in EIW. In this work, the interrelationships between ink‐bath interactions and three major physical phenomena (including filament diffusion, shrinkage, and breakage) are experimentally and systematically investigated. Several key parameters, such as interfacial tension between ink and bath materials, ink's elasticity, and bath's yield stress, significantly affect the morphology and/or geometry of as‐printed filaments. Based on the obtained knowledge, a functional index finger is printed, which demonstrates a good grasping capability in a robotic hand system.