Bioinspired polyethylene terephthalate nanocone arrays with underwater superoleophobicity and anti-bioadhesion properties
writer：Wendong Liu, Xueyao Liu, Jiaozi Fangteng, Shuli Wang, Liping Fang, Huaizhong Shen, Siyuan Xiang, Hon
keywords：無
source：期刊
specific source：Nanoscale, 2014, 6, 13845–13853.
Issue time：2014年
This paper presents a facile method to fabricate bioinspired polyethylene terephthalate (PET) nanocone
arrays via colloidal lithography. The aspect ratio (AR) of the nanocones can be ?nely modulated ranging
from 1 to 6 by regulating the etching time. The samples with the AR value of 6 can present underwater
superoleophobicity with the underwater oil contact angle (OCA) of 171.8°. The as-prepared PET nanocone
arrays perform anti-bioadhesion behavior, which inhibits the formation of the actin cytoskeleton when it
used as the substrate for cell culture. Moreover, the oil wettability is temperature controlled after modify-
ing the PET nanocone arrays with PNIPAAm ?lm, and the oil wettability of the functionalized nanocone
arrays can be transformed from the superoleophobic state with OCA about 151° to the oleophilic state
with OCA about 25° reversibly. Due to the high-throughput, parallel fabrication and cost-e?ciency of this
method, it will be favourable for researchers to introduce oleophobic properties to various substrate and
device surfaces. Due to the superoleophobicity and simple functionalizing properties, the PET nanocone
arrays are very promising surfaces for anti-adhesion, self-cleaning and have potential applications in
material, medical, and biological ?elds.