Premium
Orthogonal Control of Stability and Tunable Dry Adhesion by Tailoring the Shape of Tapered Nanopillar Arrays
Author(s) -
Cho Younghyun,
Kim Gyuseok,
Cho Yigil,
Lee Su Yeon,
Minsky Helen,
Turner Kevin T.,
Gianola Daniel S.,
Yang Shu
Publication year - 2015
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201503347
Subject(s) - nanopillar , materials science , composite material , adhesion , anodizing , pencil (optics) , aluminium , nanostructure , nanotechnology , optics , physics
Tapered nanopillar structures of different cross‐sectional geometries including cone‐, pencil‐like, and stepwise are prepared from anodized aluminum oxide templates. The shape effect on the adhesion strength is investigated in experiments and simulation. Cone‐shaped nanopillars are highly bendable under load and can recover after unloading, thus, warranting high adhesion strength, 34 N cm −2 . The pencil‐like and stepwise nanopillars are, however, easily fractured and are not recoverable under the same conditions.