Self-spinning filaments for autonomously linked microfibers

Dylan M. Barber, Todd Emrick (), Gregory M. Grason () and Alfred J. Crosby ()
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Dylan M. Barber: University of Massachusetts Amherst
Todd Emrick: University of Massachusetts Amherst
Gregory M. Grason: University of Massachusetts Amherst
Alfred J. Crosby: University of Massachusetts Amherst

Nature Communications, 2023, vol. 14, issue 1, 1-14

Abstract: Abstract Filamentous bundles are ubiquitous in Nature, achieving highly adaptive functions and structural integrity from assembly of diverse mesoscale supramolecular elements. Engineering routes to synthetic, topologically integrated analogs demands precisely coordinated control of multiple filaments’ shapes and positions, a major challenge when performed without complex machinery or labor-intensive processing. Here, we demonstrate a photocreasing design that encodes local curvature and twist into mesoscale polymer filaments, enabling their programmed transformation into target 3-dimensional geometries. Importantly, patterned photocreasing of filament arrays drives autonomous spinning to form linked filament bundles that are highly entangled and structurally robust. In individual filaments, photocreases unlock paths to arbitrary, 3-dimensional curves in space. Collectively, photocrease-mediated bundling establishes a transformative paradigm enabling smart, self-assembled mesostructures that mimic performance-differentiating structures in Nature (e.g., tendon and muscle fiber) and the macro-engineered world (e.g., rope).

Date: 2023
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DOI: 10.1038/s41467-023-36355-w

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