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18 results on '"DeOtte, Joshua"'

1. Cellular fluidics

Author

Dudukovic, Nikola A., Fong, Erika J., Gemeda, Hawi B., DeOtte, Joshua R., Cerón, Maira R., Moran, Bryan D., Davis, Jonathan T., Baker, Sarah E., and Duoss, Eric B.

Published
2021
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3. Additive Micro-Manufacturing of Designer Materials

Author

Duoss, Eric, Zhu, Cheng, Sullivan, Kyle, Vericella, John, Hopkins, Jonathan, Zheng, Rayne, Pascall, Andrew, Weisgraber, Todd, Deotte, Joshua, Frank, James, Lee, Howon, Kolesky, David, Lewis, Jennifer, Tortorelli, Daniel, Saintillan, David, Fang, Nicholas, Kuntz, Joshua, Spadaccini, Christopher, Udomkichdecha, Werasak, editor, Böllinghaus, Thomas, editor, Manonukul, Anchalee, editor, and Lexow, Jürgen, editor

Published
2014
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4. Ultralight, Ultrastiff Mechanical Metamaterials

Author

Zheng, Xiaoyu, Lee, Howon, Weisgraber, Todd H., Shusteff, Maxim, DeOtte, Joshua, Duoss, Eric B., Kuntz, Joshua D., Biener, Monika M., Ge, Qi, Jackson, Julie A., Kucheyev, Sergei O., Fang, Nicholas X., and Spadaccini, Christopher M.

Published
2014

5. Advanced Manufacturing for Electrosynthesis of Fuels and Chemicals from CO2

Author

Feaster, Jeremy, primary, Corral, Daniel, additional, Sobhani, Sadaf, additional, Deotte, Joshua, additional, Lee, Dong Un, additional, Wong, Andrew, additional, Hamilton, Julie, additional, Beck, Victor A, additional, Sarkar, Amitava, additional, Hahn, Christopher, additional, Jaramillo, Thomas F, additional, Baker, Sarah, additional, and Duoss, Eric B, additional

Published
2021
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7. Advanced manufacturing for electrosynthesis of fuels and chemicals from CO2

Author

Corral, Daniel, primary, Feaster, Jeremy T., additional, Sobhani, Sadaf, additional, DeOtte, Joshua R., additional, Lee, Dong Un, additional, Wong, Andrew A., additional, Hamilton, Julie, additional, Beck, Victor A., additional, Sarkar, Amitava, additional, Hahn, Christopher, additional, Jaramillo, Thomas F., additional, Baker, Sarah E., additional, and Duoss, Eric B., additional

Published
2021
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10. Direct Writing of Tunable Living Inks for Bioprocess Intensification

Author

Qian, Fang, primary, Zhu, Cheng, additional, Knipe, Jennifer M., additional, Ruelas, Samantha, additional, Stolaroff, Joshuah K., additional, DeOtte, Joshua R., additional, Duoss, Eric B., additional, Spadaccini, Christopher M., additional, Henard, Calvin A., additional, Guarnieri, Michael T., additional, and Baker, Sarah E., additional

Published
2019
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11. Direct Writing of Tunable Living Inks for Bioprocess Intensification

Author

Qian, Fang, Zhu, Cheng, Knipe, Jennifer M., Ruelas, Samantha, Stolaroff, Joshuah K., DeOtte, Joshua R., Duoss, Eric B., Spadaccini, Christopher M., Henard, Calvin A., Guarnieri, Michael T., and Baker, Sarah E.

Abstract

Critical to the success of three-dimensional (3D) printing of living materials with high performance is the development of new ink materials and 3D geometries that favor long-term cell functionality. Here we report the use of freeze-dried live cells as the solid filler to enable a new living material system for direct ink writing of catalytically active microorganisms with tunable densities and various self-supporting porous 3D geometries. Baker’s yeast was used as an exemplary live whole-cell biocatalyst, and the printed structures displayed high resolution, large scale, high catalytic activity and long-term viability. An unprecedented high cell loading was achieved, and cell inks showed unique thixotropic behavior. In the presence of glucose, printed bioscaffolds exhibited increased ethanol production compared to bulk counterparts due largely to improved mass transfer through engineered porous structures. The new living materials developed in this work could serve as a versatile platform for process intensification of an array of bioconversion processes utilizing diverse microbial biocatalysts for production of high-value products or bioremediation applications.

Published
2024
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12. Printable enzyme-embedded materials for methane to methanol conversion

Author

Blanchette, Craig D., primary, Knipe, Jennifer M., additional, Stolaroff, Joshuah K., additional, DeOtte, Joshua R., additional, Oakdale, James S., additional, Maiti, Amitesh, additional, Lenhardt, Jeremy M., additional, Sirajuddin, Sarah, additional, Rosenzweig, Amy C., additional, and Baker, Sarah E., additional

Published
2016
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13. Design and optimization of a light-emitting diode projection micro-stereolithography three-dimensional manufacturing system

Author

Zheng, Xiaoyu, Deotte, Joshua, Alonso, Matthew P., Farquar, George R., Weisgraber, Todd H., Gemberling, Steven, Lee, Howon, Spadaccini, Christopher M., and Fang, Nicholas X.

Subjects
Manufacturing, Polymers, Light Emitting Diodes, Ultraviolet light, Polymerization
Abstract

The rapid manufacture of complex three-dimensional micro-scale components has eluded researchers for decades. Several additive manufacturing options have been limited by either speed or the ability to fabricate true three-dimensional structures. Projection micro-stereolithography (P��SL) is a low cost, high throughput additive fabrication technique capable of generating three-dimensional microstructures in a bottom-up, layer by layer fashion. The P��SL system is reliable and capable of manufacturing a variety of highly complex, three-dimensional structures from micro- to meso-scales with micro-scale architecture and submicron precision. Our P��SL system utilizes a reconfigurable digital mask and a 395 nm light-emitting diode (LED) array to polymerize a liquid monomer in a layer-by-layer manufacturing process. This paper discusses the critical process parameters that influence polymerization depth and structure quality. Experimental characterization and performance of the LED-based P��SL system for fabricating highly complex three-dimensional structures for a large range of applications is presented.

Published
2012
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15. Publisher's Note: “Design and optimization of a light-emitting diode projection micro-stereolithography three-dimensional manufacturing system” [Rev. Sci. Instrum. 83, 125001 (2012)]

Author

Zheng, Xiaoyu, primary, Deotte, Joshua, additional, Alonso, Matthew P., additional, Farquar, George R., additional, Weisgraber, Todd H., additional, Gemberling, Steven, additional, Lee, Howon, additional, Fang, Nicholas, additional, and Spadaccini, Christopher M., additional

Published
2013
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17. Hierarchical Composites Patterned via 3D Printed Cellular Fluidics.

Author

Gemeda, Hawi B., Dudukovic, Nikola A., Zhu, Cheng, Guell Izard, Anna, Gongora, Aldair E., Deotte, Joshua R., Davis, Johnathan T., Duoss, Eric B., and Fong, Erika J.

Subjects
*UNIT cell, *FLUIDICS, *RAPID prototyping, *MECHANICAL behavior of materials, *THREE-dimensional printing, *CELL anatomy, *ELASTOMERS
Abstract

Additive manufacturing of freeform structures containing multiple materials with deterministic spatial arrangement and interactions remains a challenge for most 3D printing processes, due to complex fabrication tool requirements and limitations in printability of some material classes. Here, a versatile method is reported to produce architected composites using the concept of cellular fluidics, in which lattices of unit cells are used as templating scaffolds to guide flowable infill materials in a programmed spatial pattern, upon which they are cured in place to produce a deterministically ordered multimaterial solid. The lattice design relies on the unit cell size, type, strut diameter, surface wetting, and distribution of cellular structures to control liquid flow and retention. Individual unit cells are tuned to achieve reliable infilling and combined into higher‐order architectures to achieve multiscale composite materials with disparate mechanical properties, including those considered non‐printable. Lattice design considerations for leveraging capillary phenomena and demonstrate several methods of patterning polymers in 3D‐printed cellular fluidic structures are presented. The concept of tuning the compressive response of an architected composite using a flexible‐elastomer as the lattice and a stiff‐epoxy as the infill material is illustrated. [ABSTRACT FROM AUTHOR]

Published
2024
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18. Ultralight, Ultrastiff Mechanical Metamaterials.

Author

Xiaoyu Zheng, Howon Lee, Weisgraber, Todd H., Shusteff, Maxim, DeOtte, Joshua, Duoss, Eric B., Kuntz, Joshua D., Biener, Monika M., Qi Ge, Jackson, Julie A., Kucheyev, Sergei O., Fang, Nicholas X., and Spadaccini, Christopher M.

Subjects
*MATERIALS science, *METAMATERIALS, *STIFFNESS (Mechanics), *DENSITY, *NANOSTRUCTURED materials, *STEREOLITHOGRAPHY, *MICROFABRICATION
Abstract

The mechanical properties of ordinary materials degrade substantially with reduced density because their structural elements bend under applied load. We report a class of microarchitected materials that maintain a nearly constant stiffness per unit mass density, even at ultralow density. This performance derives from a network of nearly isotropic microscale unit cells with high structural connectivity and nanoscale features, whose structural members are designed to carry loads in tension or compression. Production of these microlattices, with polymers, metals, or ceramics as constituent materials, is made possible by projection microstereolithography (an additive micromanufacturing technique) combined with nanoscale coating and postprocessing. We found that these materials exhibit ultrastiff properties across more than three orders of magnitude in density, regardless of the constituent material. [ABSTRACT FROM AUTHOR]

Published
2014
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