Dual-Gel 4D Printing of Bioinspired Tubes

Liu, Jiayu; Erol, Ozan; Pantula, Aishwarya; Liu, Wangqu; Jiang, Zhuoran; Kobayashi, Kunihiko; Chatterjee, Devina; Hibino, Narutoshi; Romer, Lewis H.; Kang, Sung Hoon; Nguyen, Thao D.; Gracias, David H.

doi:10.1021/acsami.8b17218

Cited by 117 publications

(103 citation statements)

References 72 publications

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“…Empowered by the emerging 3D printing technology [46][47][48][49][50][51][52] , it becomes highly feasible to fabricate complex multi-material architectures at a wide range of length scales. In addition, the mechanicsguided design approach is a pressing necessity as we enter this new era with increasing demands on reconfigurable materials and systems 53,54 .…”

Section: Resultsmentioning

confidence: 99%

Symmetry-Breaking Actuation Mechanism for Soft Robotics and Active Metamaterials

Zhang

et al. 2019

ACS Appl. Mater. Interfaces

149

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Magnetic-responsive composites that consist of soft matrix embedded with hard-magnetic particles have recently been demonstrated as robust soft active materials for fast-transforming actuation. However, the deformation of the functional components commonly attains only a single actuation mode under external stimuli, which limits their capability of achieving tunable properties.To greatly enhance the versatility of soft active materials, we exploit a new class of programmable magnetic-responsive composites incorporated with a multifunctional joint design that allows asymmetric multimodal actuation under an external stimulation. We demonstrate that the proposed asymmetric multimodal actuation enables a plethora of novel applications ranging from the basic 1D/2D active structures with asymmetric shape-shifting to biomimetic crawling and swimming robots with efficient dynamic performance as well as 2D metamaterials with tunable properties.This new asymmetric multimodal actuation mechanism will open new avenues for the design of next-generation multifunctional soft robots, biomedical devices, and acoustic metamaterials.

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Section: Resultsmentioning

confidence: 99%

Symmetry-Breaking Actuation Mechanism for Soft Robotics and Active Metamaterials

Zhang

et al. 2019

ACS Appl. Mater. Interfaces

149

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“…Eventually, the internal stresses generated within the materials lead to an out‐of‐plane buckling deformation which is energetically more favorable. Patterning of stimuli‐responsive hydrogels can strategically place these internal stresses to program complex shape transformations …”

Section: Principlesmentioning

confidence: 99%

“…Liu et al describe thermoresponsive 4D printed bioinspired tubes including those that can alter their length or width and bend based on segmented designs. They demonstrate a coral polyp inspired structure that can simultaneously extend and grip an object . Kwon et al developed electroactive aquabots based on the motility of sperm and octopus.…”

Section: Applicationsmentioning

confidence: 99%

Transformer Hydrogels: A Review

Erol

Pantula

Liu

et al. 2019

Adv Materials Technologies

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235

211

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Hydrogels, which are hydrophilic soft porous networks, are an important class of materials of broad relevance to bioanalytical chemistry, soft‐robotics, drug delivery, and regenerative medicine. Transformer hydrogels are micro‐ and mesostructured hydrogels that display a dramatic transformation of shape, form, or dimension with associated changes in function, due to engineered local variations such as in swelling or stiffness, in response to external controls or environmental stimuli. This review describes principles that can be utilized to fabricate transformer hydrogels such as by layering, patterning, or generating anisotropy, and gradients. Transformer hydrogels are classified based on their responsivity to different stimuli such as temperature, electromagnetic fields, chemicals, and biomolecules. A survey of the current research progress suggests applications of transformer hydrogels in biomimetics, soft robotics, microfluidics, tissue engineering, drug delivery, surgery, and biomedical engineering.

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“…7(c) and (d)) was designed to expand and grasp an object such as a cube, as per the need. 117 The event was These smart materials are capable of changing their shapes over time, and thus make breathing easier for the babies (who are growing with time)…”

Section: D Printing Of the Composite Hydrogelmentioning

confidence: 99%