Recently, direct ink writing (DIW) technique has been explored to pattern mesogen alignment in LCE structures with complex geometries. In DIW process of LCE, viscous ink composed of uncrosslinked liquid crystal oligomers is extruded out of a printing nozzle and the mesogens are spontaneously aligned along the printing path by the shear stress ...

2022年7月8日 · In this work, a DIW approach is developed for printing a supramolecular poly (thio)urethane LCE to overcome these drawbacks of permanent cross-linking. The thermo-reversible nature of the supramolecular cross-links enables the interplay between melt-processable behavior required for extrusion and formation of the network to fix the alignment.

2024年10月1日 · This study introduces a 4D printing method for liquid crystal elastomer (LCE) composites with continuous fibers and unveils their multifunctional actuation and exciting mechanical responses.

2021年11月18日 · We now demonstrate the additional levels of control over compressive mechanical behavior possible in DIW-printed monodomain LCE devices in high aspect ratio devices where buckling effects are...

diw是一种挤出式的打印技术，也是目前最广泛地用于制造毫米级厚度lces的打印技术。 研究表明，相比于传统制备技术以及其他4D打印技术，DIW技术最突出的优势是粘弹性的LCE墨水在挤出和书写过程中受到持续的剪切力和牵引力，使得LCEs的介晶基元能够随着打印 ...

2022年12月25日 · In this work, the first light-fueled supramolecular LCEs suitable for the direct ink writing (DIW) of soft actuators are synthesized in which a photopolymerization step is not needed. With the responsive supramolecular material, 3D-printed objects are fabricated by exploiting the thermoreversible interplay of the hydrogen-bonding physical cross ...

2021年7月23日 · More recently, direct ink writing (DIW)–based 3D printing has been exploited to simultaneously orient LC mesogens along the direction of extrusion path while photocrosslinking the LCE network. These strategies have successfully yielded soft robotic actuators with complex, dynamic functional architectures that can undergo 2D-to-3D and 3D-to-3D ...

This study introduces a design and manufacturing methodology for combining direct ink write (DIW) 3D printing of soft, stretchable conductive inks with DIW-based “4D printing” of LCE to create fully integrated, electrically responsive, shape programmable matter.

This paper reports on the fabrication of light-responsive amphibious LC-actuators via direct ink writing (DIW). The actuators present two underwater deformation modes triggered by different stimuli. Temperature induces contraction/expansion and light induces bending/unbending.

2021年4月1日 · The DLP printer enables high speed, high-resolution printing of photopolymers serving as a material matrix while the DIW can print various functional materials, such as LCE and conductive ink. We demonstrate this hybrid printer can be used to directly print multi-material functional structures and devices, including multi-color prototypes, soft ...