3D Chiral Micro-Pinwheels Based on Rolling-Up Kirigami Technology

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

10 Scopus Citations
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Original languageEnglish
Article number2201627
Journal / PublicationSmall Methods
Volume7
Issue number7
Online published19 Apr 2023
Publication statusPublished - 20 Jul 2023

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Abstract

Expanding micro-/nanostructures into 3D ones results not only in boosting structural integration level with compact geometry but also enhancing a device's complexity and functionality. Herein, a synergetic 3D micro-/nanoshape transformation is proposed by combining kirigami and rolling-up techniques, or rolling-up kirigami, for the first time. As an example, micro-pinwheels with multiple flabella are patterned on pre-stressed bilayer membranes and rolled up into 3D structures. The flabella are designed when they are patterned on a 2D thin film, facilitating the integration of micro-/nanoelement and other functionalization processes during 2D patterning, which is typically much easier than post-shaping an as-fabricated 3D structure by removing redundant materials or 3D printing. The dynamic rolling-up process is simulated using elastic mechanics with a movable releasing boundary. Mutual competition and cooperation among flabella are observed during the whole release process. More importantly, the mutual conversion between translation and rotation offers a reliable platform for developing parallel microrobots and adaptive 3D micro-antennas. Additionally, 3D chiral micro-pinwheel arrays integrated into a microfluidic chip are successfully applied to detect organic molecules in solution using a terahertz apparatus. With an extra actuation, active micro-pinwheels can potentially serve as a base to functionalize 3D kirigami as tunable devices. © 2023 Wiley-VCH GmbH.

Research Area(s)

  • flabella, micro-pinwheels, rolling-up kirigami, terahertz detection

Citation Format(s)

3D Chiral Micro-Pinwheels Based on Rolling-Up Kirigami Technology. / Wang, Kun; Hou, Chaojian; Cong, Longqing et al.
In: Small Methods, Vol. 7, No. 7, 2201627, 20.07.2023.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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