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- W3130484578 endingPage "2010743" @default.
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- W3130484578 abstract "Polymer hydrogels exhibit actuation properties that result in reversible shape transformations and have promising applications in soft robotics, drug delivery systems, sensors, and microfluidic devices. Actuation occurs due to differential hydrogel swelling and is generally achieved by modulating hydrogel composition. Here a different approach to hydrogel actuation that originates solely from its structural anisotropy is reported. For 3D-printed single-layer hydrogels formed by cellulose nanocrystals (CNCs) and gelatin methacryloyl it is shown that shear-induced orientation of CNCs results in anisotropic mechanical and swelling properties of the hydrogel. Upon swelling in water, planar hydrogels acquire multiple complex 3D shapes that are achieved by i) varying CNC orientation with respect to the shape on the hydrogel sheet and ii) patterning the hydrogel with the regions of shear-mediated and random CNC orientation. This study shows the capability to generate multiple shapes from the same hydrogel actuator based on the degree of its structural anisotropy. In addition, it introduces a biocompatible nanocolloidal ink with shear-thinning and self-healing properties for additive manufacturing of hydrogel actuators." @default.
- W3130484578 created "2021-03-01" @default.
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- W3130484578 date "2021-02-22" @default.
- W3130484578 modified "2023-10-16" @default.
- W3130484578 title "Actuation of Three‐Dimensional‐Printed Nanocolloidal Hydrogel with Structural Anisotropy" @default.
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- W3130484578 doi "https://doi.org/10.1002/adfm.202010743" @default.
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