3D printing stretchable and compressible porous structures by polymerizable emulsions for soft robotics

Bliah, Ouriel; Joe, Seonggun; Reinberg, Roei; Nardin, Anderson B.; Beccai, Lucia; Magdassi, Shlomo

doi:10.1039/d3mh00773a

Cited by 6 publications

(1 citation statement)

References 59 publications

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“…In conclusion, the versatility of the material and fabrication method opens up opportunities for various soft sensing applications, andthe ability to customize the material's properties allows for tailoring the sensors to meet specific requirements. We had earlier demonstrated the approach of harnessing both micropores and a lattice design (macropores) to enhance the deformation for soft actuation [ 70,71 ] by printing polymerizable emulsions. In this regard, the possibility of fabricating multimaterial 3D cryogels can offer interesting opportunities for future investigation of sensorized actuators with programmed morphologies, and that can be 3D‐printed all‐in‐one.…”

Section: Discussionmentioning

confidence: 99%

DLP‐Printable Porous Cryogels for 3D Soft Tactile Sensing

Cafiso,

Bernabei,

Lo Preti

et al. 2024

Adv Materials Technologies

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Three‐Dimensional (3D) printed porous materials hold the potential for various soft sensing applications due to their remarkable flexibility, low density, and customizable geometries. However, developing versatile and efficient fabrication methods is crucial to unlock their full potential. A novel approach is introduced by combining Digital Light Processing (DLP) 3D printing and freeze‐drying to manufacture deformable cryogels featuring intricate morphologies. Photocurable hydrogels based on Poly(3,4‐ethylenedioxythiophene)Polystyrene sulfonate (PEDOT:PSS), Polyethylene glycol Diacrylate (PEGDA) and Ethylene Glycol (EG) are successfully printed and lyophilized. In this way, porous cryogels with tailorable properties are achieved. Microporosity varies from 68% to 96%, according to the chemical composition. Ultra‐soft cryogels with a compressive modulus of 0.13MPa are fabricated by adding a reactive diluent. As a result of the cryogelation process, which effectively removes water from the hydrogels, microporous structures with details as fine as 100 µm are obtained. The achieved freedom of design is exploited to fabricate resistive force sensors with a honeycomb lattice morphology. The sensitivity and the working range of the sensors can be tailored by tuning the size of the cells, paving the way for sensors with programmable architectures that can meet diverse requirements.

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Section: Discussionmentioning

confidence: 99%

DLP‐Printable Porous Cryogels for 3D Soft Tactile Sensing

Cafiso,

Bernabei,

Lo Preti

et al. 2024

Adv Materials Technologies

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3D Printing of Self‐Healing Materials

Roppolo,

Caprioli,

Pirri

et al. 2023

Advanced Materials

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In this review article, we present a comprehensive overview of the latest advances in the field of 3D printable structures with self‐healing properties. Three‐dimensional printing (3DP) is a versatile technology that enables the rapid manufacturing of complex geometric structures with precision and functionality not previously attainable. However, the application of 3DP technology is still limited by the availability of materials with customizable properties specifically designed for additive manufacturing. The addition of self‐healing properties within 3D printed objects is of high interest as it can improve the performance and lifespan of structural components, and even enable the mimicking of living tissues for biomedical applications, such as organs printing. In the review, we will discuss and analyze the most relevant results reported in recent years in the development of self‐healing polymeric materials that can be processed via 3D printing. After introducing the chemical and physical self‐healing mechanism that can be exploited, the literature review here reported will focus in particular on printability and repairing performances. At last, actual perspective and possible development field will be critically discussed.This article is protected by copyright. All rights reserved

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