Harnessing Localized Ridges for High-Aspect-Ratio Hierarchical Patterns with Dynamic Tunability and Multifunctionality, Advanced Materials, DOI: 10.1002/adma.201304589.
A simple method for fabricating high-aspect-ratio,
hierarchical, and dynamically tunable surface patterns is invented by
harnessing localized-ridge instabilities in gold nanofilms coated on
elastomer substrates (a); a theoretical model to calculate the critical
parameters (e.g., wavelength and amplitude) for designing the new
patterns is developed (b); and novel applications of the patterns as
super-hydrophobic coatings (c) and biomimetic cell-culture substrates
(d) capable of on-demand tunability are demonstrated.
