Self-assembled micro-organogels for 3D printing silicone structures
Christopher S. O’Bryan,Tapomoy Bhattacharjee,Samuel M. Hart,Christopher P. Kabb,Kyle D. Schulze,Indrasena Chilakala,Brent S. Sumerlin,W. Gregory Sawyer,Thomas E. Angelini +8 more
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TLDR
It is found that the minimum printed feature size can be controlled by the yield stress of the micro-organogel medium, enabling the fabrication of numerous complex silicone structures, including branched perfusable networks and functional fluid pumps.Abstract:
The widespread prevalence of commercial products made from microgels illustrates the immense practical value of harnessing the jamming transition; there are countless ways to use soft, solid materials that fluidize and become solid again with small variations in applied stress. The traditional routes of microgel synthesis produce materials that predominantly swell in aqueous solvents or, less often, in aggressive organic solvents, constraining ways that these exceptionally useful materials can be used. For example, aqueous microgels have been used as the foundation of three-dimensional (3D) bioprinting applications, yet the incompatibility of available microgels with nonpolar liquids, such as oils, limits their use in 3D printing with oil-based materials, such as silicone. We present a method to make micro-organogels swollen in mineral oil, using block copolymer self-assembly. The rheological properties of this micro-organogel material can be tuned, leveraging the jamming transition to facilitate its use in 3D printing of silicone structures. We find that the minimum printed feature size can be controlled by the yield stress of the micro-organogel medium, enabling the fabrication of numerous complex silicone structures, including branched perfusable networks and functional fluid pumps.read more
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Biofabrication strategies for 3D in vitro models and regenerative medicine
Lorenzo Moroni,Jason A. Burdick,Christopher B. Highley,Sang Jin Lee,Yuya Morimoto,Shoji Takeuchi,James J. Yoo +6 more
TL;DR: This Review examines biofabrication strategies for the construction of functional tissue replacements and organ models, focusing on the development of biomaterials, such as supramolecular and photosensitive materials, that can be processed using bioFabrication techniques.
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Biofabrication: a guide to technology and terminology
Lorenzo Moroni,Thomas Boland,Jason A. Burdick,Carmelo De Maria,Brian Derby,Gabor Forgacs,Juergen Groll,Qing Li,Jos Malda,Vladimir Mironov,Carlos Mota,Makoto Nakamura,Wenmiao Shu,Shoji Takeuchi,Tim B. F. Woodfield,Tao Xu,James J. Yoo,Giovanni Vozzi +17 more
TL;DR: The objective is to provide a guide to the terminology for different technologies in the field which may serve as a reference for the biofabrication community.
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Polymers for additive manufacturing and 4D-printing: Materials, methodologies, and biomedical applications
TL;DR: In this paper, the basic principles, considering the printing mechanism as well as the advantages and disadvantages, of the most relevant polymer AM technologies are described, and particular features, properties and limitations of currently employed polymer systems in the various AM technology areas are presented and analyzed.
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A Review of 3D Printing Technologies for Soft Polymer Materials
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3D printing of robotic soft actuators with programmable bioinspired architectures.
Manuel Schaffner,Jakob A. Faber,Pianegonda Lucas Raphael,Patrick A. Rühs,Fergal Coulter,Fergal Coulter,André R. Studart +6 more
TL;DR: A multimaterial 3D printing platform for the fabrication of soft actuators displaying a wide range of motions that are programmable within the material's properties and architecture is presented.
References
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3D bioprinting of tissues and organs
Sean V. Murphy,Anthony Atala +1 more
TL;DR: 3D bioprinting is being applied to regenerative medicine to address the need for tissues and organs suitable for transplantation and developing high-throughput 3D-bioprinted tissue models for research, drug discovery and toxicology.
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Particles as surfactants—similarities and differences
TL;DR: In this paper, the authors compare the behavior observed in systems containing either particles or surfactant molecules in the areas of adsorption to interfaces, partitioning between phases and solid-stabilised emulsions and foams.
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Block Copolymers—Designer Soft Materials
TL;DR: The Knitting Pattern as mentioned in this paper is a block copolymer that was discovered by Reimund Stadler and his coworkers and reflects a delicate free-energy minimization that is common to all blockcopolymer materials.
Journal ArticleDOI
Jamming is not just cool any more
Andrea J. Liu,Sidney R. Nagel +1 more
TL;DR: In this article, it was suggested that the properties of jammed solids should be considered as belonging to a new class of materials known as fragile matter which, because of its unusual mechanical properties, requires a new theoretical description.