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
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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