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Fabrication and applications of stimuli‐responsive micro/nanopillar arrays
Author(s) -
Park Jeong Eun,
Won Sukyoung,
Cho Woongbi,
Kim Jae Gwang,
Jhang Saebohm,
Lee Jae Gyeong,
Wie Jeong Jae
Publication year - 2021
Publication title -
journal of polymer science
Language(s) - English
Resource type - Journals
eISSN - 2642-4169
pISSN - 2642-4150
DOI - 10.1002/pol.20210311
Subject(s) - nanopillar , materials science , nanotechnology , fabrication , creatures , nanoscopic scale , pillar , carbon nanotube , microfluidics , nanostructure , mechanical engineering , natural (archaeology) , medicine , alternative medicine , archaeology , pathology , engineering , history
The functional surface features of living creatures are driven by the complex morphology of periodically arranged micro/nanoscale structures. Various fabrication processes have been devised mimic the performance of natural features; these methods morph hierarchical and multi‐leveled pillar arrays, such as top‐down, bottom‐up, and a hybrid of top‐down and bottom‐up processes. Different methodologies are employed depending on the materials, such as polymeric composites, metal oxides, metals, and carbon nanotubes. In this review, we discuss the shape‐reconfiguration of stimuli‐responsive micro/nanopillar arrays achieved by capillary force, light, magnetic field, and heat. In particular, photo‐ and magnetic actuation of pillar arrays revealed programmability according to the arrangement of the liquid crystal molecules or magnetic particles by remote control. Furthermore, applications of micro/nanopillar arrays, such as adhesives, omniphobicity, optics, and biomedical technologies, are also discussed.