TY - JOUR
T1 - Hyper-anti-freezing bionic functional surface to −90°C
AU - Wang, Zhaolong
AU - Xie, Mingzhu
AU - Guo, Qing
AU - Liao, Yibo
AU - Zhang, Ce
AU - Chen, Yongping
AU - Dong, Zhichao
AU - Duan, Huigao
N1 - Publisher Copyright:
© The Author(s) 2023. Published by Oxford University Press on behalf of National Academy of Sciences. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence (https://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com.
PY - 2023/6/1
Y1 - 2023/6/1
N2 - Freezing phenomenon has troubled people for centuries, and efforts have been made to lower the liquid freezing temperature, raise the surface temperature, or mechanical deicing. Inspired by the elytra of beetle, we demonstrate a novel functional surface for directional penetration of liquid to reduce icing. The bionic functional surface is fabricated by projection microstereolithography (PµSL) based three dimensional printing technique with the wettability on its two sides tailored by TiO2 nanoparticle sizing agent. A water droplet penetrates from the hydrophobic side to the superhydrophilic side of such a bionic functional surface within 20 ms, but it is blocked in the opposite direction. Most significantly, the penetration time of a water droplet through such a bionic functional surface is much shorter than the freezing time on it, even though the temperature is as low as −90°C. This work opens a gate for the development of functional devices for liquid collection, condensation, especially for hyperantifogging/freezing.
AB - Freezing phenomenon has troubled people for centuries, and efforts have been made to lower the liquid freezing temperature, raise the surface temperature, or mechanical deicing. Inspired by the elytra of beetle, we demonstrate a novel functional surface for directional penetration of liquid to reduce icing. The bionic functional surface is fabricated by projection microstereolithography (PµSL) based three dimensional printing technique with the wettability on its two sides tailored by TiO2 nanoparticle sizing agent. A water droplet penetrates from the hydrophobic side to the superhydrophilic side of such a bionic functional surface within 20 ms, but it is blocked in the opposite direction. Most significantly, the penetration time of a water droplet through such a bionic functional surface is much shorter than the freezing time on it, even though the temperature is as low as −90°C. This work opens a gate for the development of functional devices for liquid collection, condensation, especially for hyperantifogging/freezing.
KW - Laplace force
KW - PμSL based 3D printing
KW - anti-icing
KW - liquid unidirectional penetration
UR - https://www.scopus.com/pages/publications/85173608746
U2 - 10.1093/pnasnexus/pgad177
DO - 10.1093/pnasnexus/pgad177
M3 - 文章
AN - SCOPUS:85173608746
SN - 2752-6542
VL - 2
JO - PNAS Nexus
JF - PNAS Nexus
IS - 6
M1 - pgad177
ER -