Freeform Fabrication of Fluidic Edible Materials

Yang, Humphrey; Luo, Danli; Qian, Kuanren; Yao, Lining

doi:10.1145/3411764.3445097

Cited by 13 publications

(1 citation statement)

References 21 publications

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“…For non-Newtonian fluids, it can levitate fluids with zero-shear viscosity up to 5 kPa•s, including hydrogels (alginate/gelatin composite (Alg/Gel) and chitosan), emulsions (custard sauce) and filler-loaded polymer organic solutions (hydroxyapatite (HA) loaded polycaprolactone (PCL) in dichloromethane (DCM)). These materials have been widely used in tissue engineering 37 , soft robotics 38 , food 39 and wearable electronics 40 . Moreover, it is also capable of levitating solids with a density of up to 5.6 g/mm 3 , demonstrating its versatility in handling a diverse spectrum of materials.…”

Section: Operating Principles Of Acoustofabmentioning

confidence: 99%

Acoustophoretic in situ 3D fabrication of multi-material and porous structures

Chen,

Bansal,

Plasencia

et al. 2024

Preprint

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Additive manufacturing is critical in modern production, from individualized prototyping to advanced applications across various domains1-5. However, it has several challenges, including the integration of multiple materials with diverse properties into a single print without cross-contamination6, printing on complex surfaces7, and generating customized porous structures8. Here, we present AcoustoFab, an acoustophoretic fabrication system that is capable of in situ multi-material 3D printing with customized porous structures on complex substrates in a contactless manner. Our system utilizes a phased array of ultrasound transducers to precisely control sound fields in 3D space, allowing acoustic levitation of diverse materials (e.g., edible, fluorescent, luminant, and ferromagnetic) and depositing them on complex or non-planar surfaces during the additive manufacturing process. Additionally, we utilize ultrasound focusing to create high-pressure points on the target locations to generate customized porous structures to tune the texture, appearance, and flexibility. AcoustoFab stands out not only as an independent fabrication system but also for its compatibility with existing platforms, such as stereolithography, demonstrated through multi-material printing experiments, which highlights its potential for augmenting current fabrication technologies. AcoustoFab offers opportunities for non-contact, multi-material in situ printing with customized porous structures for various applications, for example, in situ printing, food engineering, soft actuators, optical devices and bioprinting.

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Section: Operating Principles Of Acoustofabmentioning

confidence: 99%