Person: Truby, Ryan
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Truby
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Truby, Ryan
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Publication 3D Bioprinting of Vascularized, Heterogeneous Cell-Laden Tissue Constructs(Wiley-Blackwell, 2014) Kolesky, David; Truby, Ryan; Gladman, Amelia Sydney; Busbee, Travis Alexander; Homan, Kimberly; Lewis, JenniferA new bioprinting method is reported for fabricating 3D tissue constructs replete with vasculature, multiple types of cells, and extracellular matrix. These intricate, heterogeneous structures are created by precisely co-printing multiple materials, known as bioinks, in three dimensions. These 3D micro-engineered environments open new avenues for drug screening and fundamental studies of wound healing, angiogenesis, and stem-cell niches.Publication Embedded 3D Printing of Strain Sensors within Highly Stretchable Elastomers(Wiley-Blackwell, 2014) Muth, Joseph Thomas; Vogt, Daniel; Truby, Ryan; Mengüç, Yiğit; Kolesky, David; Wood, Robert; Lewis, JenniferA new method, embedded-3D printing (e-3DP), is reported for fabricating strain sensors within highly conformal and extensible elastomeric matrices. e-3DP allows soft sensors to be created in nearly arbitrary planar and 3D motifs in a highly programmable and seamless manner. Several embodiments are demonstrated and sensor performance is characterized.Publication An integrated design and fabrication strategy for entirely soft, autonomous robots(Springer Nature, 2016) Wehner, Michael; Truby, Ryan; Fitzgerald, Daniel J.; Mosadegh, Bobak; Whitesides, George; Lewis, Jennifer; Wood, RobertSoft robots possess many attributes that are difficult, if not impossible, to realize with conventional robots composed of rigid materials. Yet, despite recent advances, soft robots still remain tethered to hard robotic control systems and power sources. New strategies for creating completely soft robots, including soft analogs of these crucial components, are needed to realize their full potential. Here, we report the first untethered operation of a robot comprised solely of soft materials. The robot is controlled with microfluidic logic that autonomously regulates the catalytic decomposition of an on-board monopropellant fuel supply. Gas generated from fuel decomposition inflates fluidic networks downstream of the reaction sites, resulting in actuation. The robot’s body and microfluidic logic are fabricated by molding and soft lithography, respectively, while the pneumatic actuator networks, on-board fuel reservoirs and catalytic reaction chambers needed for movement are patterned within the body via a multi-material, embedded 3D printing technique. The relevant length scales of fluidic and elastomeric architectures required for function spanned several orders of magnitude. Our integrated design and rapid fabrication approach enables the programmable assembly of multiple materials within this architecture, laying the foundation for completely soft, autonomous robots.Publication Printing soft matter in three dimensions(Springer Science and Business Media LLC, 2016-12) Truby, Ryan; Lewis, JenniferLight- and ink-based three-dimensional (3D) printing methods allow the rapid design and fabrication of materials without the need for expensive tooling, dies or lithographic masks. They have led to an era of manufacturing in which computers can control the fabrication of soft matter that has tunable mechanical, electrical and other functional properties. The expanding range of printable materials, coupled with the ability to programmably control their composition and architecture across various length scales, is driving innovation in myriad applications. This is illustrated by examples of biologically inspired composites, shape-morphing systems, soft sensors and robotics that only additive manufacturing can produce.