Schematic illustration of highly efficient fabrication of stimuli-responsive microhelix based on the rotary holographic processing method. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Schematic illustration of highly efficient fabrication of stimuli-responsive microhelix based on the rotary holographic processing method.

Caption

(a) The rapid fabricating method of pH-responsive helical structure. The helix is polymerized by the rotary holographic ring beam (RHRB) combined with the sample’s translation. The circular arrows denote the rotation direction of RCGH and RHRB, and the straight arrow represents the moving direction of the sample. (b) The generation of RCGH is composed of a CGH and a RLPM. (c) The schematic diagram of the holographic femtosecond laser processing system to fabricate microhelix. (d) Diagrammatic sketch of the expansion and contraction of the pH-triggered hydrogel-based helix. (e) The shrinking/swelling mechanism of pH-responsive hydrogel. The upper row is the schematic mechanism of the expansion and contraction of pH-responsive hydrogels. The bottom row denotes the SEM images of the hydrogel porosities in contracted (left) and expanded (right) states. Scale bar: 500 nm. (f) Schematic diagrams of various microorganisms in nature and optical images of corresponding biomimetic microhelices fabricated by the RHRB in one step. Scale bar: 25 μm.

Credit

by Rui Li, Yuan Tao, Jiawen Li, Dongdong Jin, Chen Xin, Shengyun Ji, Chaowei Wang, Yachao Zhang, Yanlei Hu, Dong Wu, Li Zhang and Jiaru Chu.

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Credit must be given to the creator.

License

CC BY

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