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Geometrically Controlled Mechanically Responsive Polyelectrolyte Tube Arrays

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Abstract

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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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