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Lin Han, Lifeng Wang, Khek-Khiang Chia, Robert E. Cohen, Michael F. Rubner, Mary C. Boyce and Christine Ortiz Geometrically Controlled Mechanically Responsive Polyelectrolyte Tube Arrays Advanced Materials 23

Version of Record online: 15 SEP 2011 | DOI: 10.1002/adma.201102917

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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.

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