Programmable Local Orientation of Micropores by Mold‐Assisted Ice Templating

• DOI: 10.1002/smtd.202000963
• Publication Date: 2020-12-18T16:29:46Z
• Authors: Xiaohong Zhou; Liang Yin; Baisong Yang; Chuyang Chen; Wenhui Chen; Yu Xie; Xichen Yang; Jonathan T. Pham; Sheng Liu; Longjian Xue
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract Pore geometry plays a crucial role in determining the properties and functions of porous materials. Various methods have been developed to prepare materials that randomly distributed or well‐aligned pores. However, technique capable fine regulation local pore orientation is still highly desired but difficult attain. A technique, termed mold‐assisted ice templating (MIT), reported control program micropores. MIT employs copper mold particular shape (for instance circle, square, hexagon, star) cold finger regulate 3D temperature gradient, which directs growth crystals; this approach results formation finely regulated patterns lamellar structures. Moreover, thickness spacing can be tuned by controlling solution concentration.