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Geometrically Controlled Mechanically Responsive Polyelectrolyte Tube Arrays
Author(s) -
Han Lin,
Wang Lifeng,
Chia KhekKhiang,
Cohen Robert E.,
Rubner Michael F.,
Boyce Mary C.,
Ortiz Christine
Publication year - 2011
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.201102917
Subject(s) - materials science , microscale chemistry , nanoindentation , polyelectrolyte , tube (container) , composite material , deformation (meteorology) , anisotropy , finite element method , coupling (piping) , nanotechnology , nanomechanics , atomic force microscopy , polymer , optics , structural engineering , mathematics education , mathematics , engineering , physics
Mechanically responsive, or “mechanomutable”, polyelectrolyte tube arrays are fabricated and studied using atomic force microscopy‐based nanoindentation and microstructurally specific finite element analysis simulations. Mechanical responsiveness is controlled through the coupling of pH‐dependent “inherent” molecular‐level material properties to anisotropic microscale geometry. A unique geometrically controlled transition is discovered that amplifies mechanical responsiveness due to a change in deformation mechanisms.