Recent advancements in 3D bioprinting have led to the fabrication of more complex, more precise, and larger printed tissue constructs. As the field continues to advance, it is critical to develop quantitative benchmarks to compare different bio-inks for key cell-biomaterial interactions, including (1) cell sedimentation within the ink cartridge, (2) cell viability during extrusion, and (3) cell...

Suberin oligomers, isolated from cork (Quercus suber L.), were used as additives in ‘Waterless’ and vegetable-oil ink formulations, in the range of 2–10% w/w. The rheological behaviour of the suberin oligomers as well as of the inks, with and without suberin, were investigated as a function of temperature. It was shown that the addition of suberin induces a decrease of viscosity of both inks. T...

Zeta potential can help you understand and control colloidal suspensions. Examples include complex biological systems such as blood and functional ones like paint. Colloidal suspensions can be as thick as paste (like cement) or as dilute as the turbidity particles in a lake. Water, milk, wine, clay, dyes, inks, paper and pharmaceuticals are good examples of useful colloidal systems. Water is a ...

Smart and mechanically flexible energy harvesting/storage devices are attractive for the immensely growing electronic, automobile, medical, aerospace markets. The leading challenges with current their limitations regarding installation on curvy design, high-manufacturing cost, lower production rate. Therefore, new design strategies in terms of materials, ability to scale up fabrication imperati...

Reproducing Color Images with Custom Inks by Eric J. Stollnitz University of Washington Advisor Associate Professor David H. Salesin Computer Science and Engineering Chairperson of Supervisory Committee Professor Loyce M. Adams Applied Mathematics This dissertation investigates the general problem of reproducing color images on an offset printing press using custom inks in any combination and n...

Package labels play a critical role in communicating product benefits to consumers. On a package, labels are used to provide useful information about the product as well branding for the company. Labels need to not only be eye catching to the consumer, but must also communicate information concerning what is being sold. This is possible through various printing technologies available in today’s...

Photocurable emulsion inks for use with solid freeform fabrication (SFF) to generate constructs with hierarchical porosity are presented. A high internal phase emulsion (HIPE) templating technique was utilized to prepare water-in-oil emulsions from a hydrophobic photopolymer, surfactant, and water. These HIPEs displayed strong shear thinning behavior that permitted layer-by-layer deposition int...