TY - JOUR
T1 - Light-Switching Surface Wettability of Chiral Liquid Crystal Networks by Dynamic Change in Nanoscale Topography
AU - Zhang, Yan Song
AU - Wang, Zhi Qun
AU - Lin, Jia De
AU - Yang, Po Chih
AU - Lee, Chia Rong
N1 - Funding Information:
The authors thank the Ministry of Science and Technology (MOST) of Taiwan (Contract Nos. MOST 109‐2112‐M‐006‐014‐MY3 and MOST 109‐2221‐E‐006‐208‐MY3) for financially supporting this research. The authors also thank the Core Facility Center of National Cheng Kung University for the AFM measurements and contact angles.
Funding Information:
The authors thank the Ministry of Science and Technology (MOST) of Taiwan (Contract Nos. MOST 109-2112-M-006-014-MY3 and MOST 109-2221-E-006-208-MY3) for financially supporting this research. The authors also thank the Core Facility Center of National Cheng Kung University for the AFM measurements and contact angles.
Publisher Copyright:
© 2021 Wiley-VCH GmbH.
PY - 2022/3
Y1 - 2022/3
N2 - Nano- and microscale morphology endows surfaces that play conspicuous roles in natural or artificial objects with unique functions. Surfaces with dynamic regulating features capable of switching the structures, patterns, and even dimensions of their surface profiles can control friction and wettability, thus having potential applications in antibacterial, haptics, and fluid dynamics. Here, a freestanding film with light-switchable surface based on cholesteric liquid crystal networks is presented to translate 2D flat plane into a 3D nanometer-scale topography. The wettability of the interface can be controlled by hiding or revealing the geometrical features of the surfaces with light. This reversible dynamic actuation is obtained through the order parameter change of the periodic cholesteric organization under a photoalignment procedure and lithography-free mode. Complex tailored structures can be used to encrypt tactile information and improve wettability by predesigning the orientation distribution of liquid crystal director. This rapid switching nanoprecision smart surface provides a novel platform for artificial skin, optics, and functional coatings.
AB - Nano- and microscale morphology endows surfaces that play conspicuous roles in natural or artificial objects with unique functions. Surfaces with dynamic regulating features capable of switching the structures, patterns, and even dimensions of their surface profiles can control friction and wettability, thus having potential applications in antibacterial, haptics, and fluid dynamics. Here, a freestanding film with light-switchable surface based on cholesteric liquid crystal networks is presented to translate 2D flat plane into a 3D nanometer-scale topography. The wettability of the interface can be controlled by hiding or revealing the geometrical features of the surfaces with light. This reversible dynamic actuation is obtained through the order parameter change of the periodic cholesteric organization under a photoalignment procedure and lithography-free mode. Complex tailored structures can be used to encrypt tactile information and improve wettability by predesigning the orientation distribution of liquid crystal director. This rapid switching nanoprecision smart surface provides a novel platform for artificial skin, optics, and functional coatings.
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U2 - 10.1002/marc.202100736
DO - 10.1002/marc.202100736
M3 - Article
C2 - 34837422
AN - SCOPUS:85120452515
SN - 1022-1336
VL - 43
JO - Macromolecular Rapid Communications
JF - Macromolecular Rapid Communications
IS - 5
M1 - 2100736
ER -