Rapid Fabrication of 3D Chiral Microstructures by Single Exposure of Interfered Femtosecond Vortex Beams and Capillary-Force-Assisted Self-Assembly

Pan Deng; Liu Shunli; Li JiawenNi JinchengXin ChenJi ShengyunLao ZhaoxinZhang ChenchuXu BingLi RuiFan ShengyinLi PengjuHu YanleiWu DongChu Jiaru

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Rapid Fabrication of 3D Chiral Microstructures by Single Exposure of Interfered Femtosecond Vortex Beams and Capillary-Force-Assisted Self-Assembly

机译：Rapid Fabrication of 3D Chiral Microstructures by Single Exposure of Interfered Femtosecond Vortex Beams and Capillary-Force-Assisted Self-Assembly

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摘要

The rapid fabrication of 3D chiral microstructures is of great significance in the fields of optics and mechanics. Here, a hybrid strategy is presented that combines spatial-light-modulator-assisted two-photon polymerization (SATPP, top-down) and capillary-force-assisted self-assembly (bottom-up) for efficiently yielding chiral microstructures. Based on SATPP, the pre-subunit can be efficiently fabricated via 3D chiral discrete vortex beam (CDVB), which is generated by interfering multiple parallel vortex beams. Then, the 3D chiral microstructures are assembled by subunits with the aid of meniscus-directed capillary force. This strategy can fabricate stable 3D chiral microstructures and improve the manufacturing efficiency by more than 100 times. Furthermore, the height, diameter, rotation angle, and handedness of chiral microstructure can be flexibly regulated. Because the obvious chiral feature of the manufactured assembly, it can exhibit strong vortical dichroism when excited by the light carrying orbital angular momentums. Also, it can be used to prepare functional microrobots base on the chiral body rotation. This hybrid strategy can rapidly manufacture 3D chiral microstructures, which can be utilized as multifunctional scalable platform with promising prospect in micro/nano robotics, optical sensors, and advanced functional devices.

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《Advanced functional materials》 |2022年第4期|2106917.1-2106917.11|共11页
作者
Pan Deng; Liu Shunli; Li JiawenNi JinchengXin ChenJi ShengyunLao ZhaoxinZhang ChenchuXu BingLi RuiFan ShengyinLi PengjuHu YanleiWu DongChu Jiaru;
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作者单位

Univ Sci & Technol China, Dept Precis Machinery & Precis Instrumentat, CAS Key Lab Mech Behav & Design Mat, Hefei Natl Lab Phys Sci Microscale, Hefei 230027, Anhui, Peoples R China;

Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117583, Singapore;

Hefei Univ Technol, Sch Instrument Sci & Optoelect Engn, Hefei 230009, Peoples R ChinaInst Ind & Equipment Technol, Anhui Prov Key Lab Aerosp Struct Parts Forming Te, Hefei 230009, Peoples R ChinaSuzhou Univ Sci & Technol, Sch Mech Engn, Suzhou 215009, Peoples R China;

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3D chiral microstructures; bionic microrobots; self-assembly; two-photo polymerization; vortex beams;

Rapid Fabrication of 3D Chiral Microstructures by Single Exposure of Interfered Femtosecond Vortex Beams and Capillary-Force-Assisted Self-Assembly

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