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Bioinspired Self-Shaping Soft Matters

초록/요약

Millimeter-long conducting fibers can be fabricated from carbon nanomaterials via a simple method involving the release of a pre-strained protein layer. We show how a self-rolling process initiated by polymerization of a micropatterned layer of fibronectin (FN) results in the production of carbon nanomaterial–based microtubular fibers. The process begins with deposition of carbon nanotube (CNT) or graphene oxide (GO) particles on the FN layer. Before polymerization, particles are discrete and nonconducting, but after polymerization the carbon materials become entangled to form an interconnected conducting network clad by FN. Selective removal of FN using high-temperature combustion yields freestanding CNT or reduced GO microtubular fibers. The properties of these fibers were characterized using atomic force microscopy and Raman spectroscopy. Our data suggest that this method may provide a ready route to rapid design and fabrication of aligned bio-hybrid nanomaterials potentially useful for future electronic applications.

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