TY - JOUR
T1 - Programmable Local Orientation of Micropores by Mold-Assisted Ice Templating
AU - Zhou, Xiaohong
AU - Yin, Liang
AU - Yang, Baisong
AU - Chen, Chuyang
AU - Chen, Wenhui
AU - Xie, Yu
AU - Yang, Xichen
AU - Pham, Jonathan T.
AU - Liu, Sheng
AU - Xue, Longjian
N1 - Publisher Copyright:
© 2020 Wiley-VCH GmbH
PY - 2021/2/15
Y1 - 2021/2/15
N2 - Pore geometry plays a crucial role in determining the properties and functions of porous materials. Various methods have been developed to prepare porous materials that have randomly distributed or well-aligned pores. However, a technique capable of fine regulation of local pore orientation is still highly desired but difficult to attain. A technique, termed mold-assisted ice templating (MIT), is reported to control and program the local orientation of micropores. MIT employs a copper mold of a particular shape (for instance a circle, square, hexagon, or star) and a cold finger to regulate the 3D orientation of a local temperature gradient, which directs the growth of ice crystals; this approach results in the formation of finely regulated patterns of lamellar pore structures. Moreover, the lamellar thickness and spacing can be tuned by controlling the solution concentration.
AB - Pore geometry plays a crucial role in determining the properties and functions of porous materials. Various methods have been developed to prepare porous materials that have randomly distributed or well-aligned pores. However, a technique capable of fine regulation of local pore orientation is still highly desired but difficult to attain. A technique, termed mold-assisted ice templating (MIT), is reported to control and program the local orientation of micropores. MIT employs a copper mold of a particular shape (for instance a circle, square, hexagon, or star) and a cold finger to regulate the 3D orientation of a local temperature gradient, which directs the growth of ice crystals; this approach results in the formation of finely regulated patterns of lamellar pore structures. Moreover, the lamellar thickness and spacing can be tuned by controlling the solution concentration.
KW - ice templates
KW - local orientation
KW - porous structures
KW - temperature gradients
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U2 - 10.1002/smtd.202000963
DO - 10.1002/smtd.202000963
M3 - Article
C2 - 34927890
AN - SCOPUS:85097680874
VL - 5
JO - Small Methods
JF - Small Methods
IS - 2
M1 - 2000963
ER -