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Computer Aided Design and Manufacturing of Soft, Three-Dimensional, Multi-Layer, Biological Constructs Via Laser Printing Onto Laser Machined Composite Biopapers

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Engineering a tissue construct which mimics a native tissue's form and function requires mimicry of the material, chemical, and morphological properties of the target tissue. However, depending on the target tissue, matching these very properties make fabrication of a composite structure challenging. Here we discuss a collection of techniques which allow us to create threedimensional soft tissue constructs comprised of multiple layers of hydrogels with high inter-layer registration. These techniques include a custom bioreactor platform integrated with NRL's Biological Laser Printing (BioLP™) stage and CAM application which allows for quick and reproducible printing, culturing and stacking of individual biopaers. The Bioreactors are designed for culturing and mounting laser machined biopapers, and the laser machined biopaper frames which allow for handling and high resolution (less than 100 micron) registration of otherwise difficult to handle 500Pa – 5kPa hydrogels selected for their mechanical and chemical resemblance to in vivo soft tissues. We demonstrate printing of immortalized endothelial cells (EC) onto biopapers and their subsequent self-assembly into capillary-like structures or tubulogenesis. Our composite stainless steel framed - collagen membrane supported – hydrogel biopapers enable asynchronous printing, cell development and delayed stacking of the soft substrates required for EC tubulogenesis.
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Document Type: Research Article

Publication date: 2013-01-01

More about this publication?
  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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