Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"Electrohydrodynamic-Jet"”.
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Electrohydrodynamic jet printing: advancements in manufacturing applications
Electrohydrodynamic jet printing offers advantages such as high resolution over more traditional manufacturing printing techniques, but lacks in the high throughput that is demanded by industry. At the University of Illinois at Urbana-Champaign, UIUC, a high resolution technique for printing was …
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Improvements to the electrohydrodynamic jet printing process
… nano-scale manufacturing in recent years, and Electrohydrodynamic Jet (E-Jet) printing offers unique advantages over other technologies in this field. In this thesis, we describe two individual improvements to E-jet printing which will increase its capabilities for micro- and nano-scale …
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Patterned substrates for cell culture with electrohydrodynamic jet printing
… the interaction of these factors. In this work, electrohydrodynamic jet (e-jet) printing is introduced as a method to pattern adhesion proteins on hydrogel substrates for cell culture. First, a new technique to fabricate polyacrylamide substrates was developed and optimized. Hydrogels were …
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Design and fabrication of multimaterial electrohydrodynamic-jet deposition system
Electrohydrodynamic jet (E-jet) printing has emerged as a high resolution alternative to other forms of direct solution-based fabrication approaches, such as ink-jet printing. This thesis discusses the design, integration and operation of a unique E-jet printing platform. The uniqueness lies in the …
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High-Resolution Electrohydrodynamic Jet Printing Methods for Applications in Electronics and Biotechnology
… methods such as thermal or piezoelectric inkjet are attractive due to their compatibility with various materials and substrates. Interests in their applications in electronics and biotechnology, where requirements on resolution can be demanding, have grown rapidly in recent years. This work …
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Electrohydrodynamic jet printing: droplet to shape writing, and potential applications with 172nm exposure
Electrohydrodynamic jet printing facilitates the deposition of 500nm-30um droplets with high positional accuracy. The University of Illinois at Urbana-Champaign, UIUC, has developed this technique and shown it has many capabilities. Whether the goal is to pattern biologically active chemicals, draw …
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A 2nd generation electrohydrodynamic jet (e-jet) printing system, parametric studies of e-jet nozzles and integrated electrode e-jet deposition
As electrohydrodynamic jet (e-jet) printing technology developments have increased in magnitude over the past few years, a low-cost and user friendly, high-resolution desktop system was developed at the University of Illinois at Urbana-Champaign. The original desktop system provided great …
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High precision electrohydrodynamic printing of polymer onto microcantilever sensors
This thesis reports electrohydrodynamic jet printing to deposit 2 – 27 um diameter polymer droplets onto microcantilever sensors. The polymer droplets were deposited as single droplets or organized patterns, with sub-μm control over droplet diameter and position. The droplet size could be …
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FABRICATION AND CHARACTERIZATION OF CELL-LADEN 3D PRINTED HYBRID SCAFFOLDS FOR ESOPHAGEAL TISSUE REPAIR
… a hybrid porous scaffold consisting a layer of electrohydrodynamic jet printed (E-jetted) polycaprolactone (PCL) / Pluronic F127 (F127) fiber mesh, and a layer of electrohydrodynamic sprayed (E-sparyed) printed PCL film, has been applied for esophageal TE application. The E-jetted fiber mesh …
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Metering and Routing of Liquid Quanta in Microfluidic Devices
… here were utilized in conjunction with an electrohydrodynamic-jet printing process to generate a high resolution heterogeneous printhead.
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Precision coordination and motion control of multiple systems via iterative learning control
… control strategies for coordinated applications. Electrohydrodynamic jet (E-jet) printing, an example of an emerging micro/nano-manufacturing process with applications in biotechnology and flexible electronics, requires multiple systems to work in a coordinated manner to achieve a desired …
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Molecular Self-Assembly of Carbon Nanosheets via AFM Nanoprinting
… including 2 photon polymerization (2PP), electrohydrodynamic jet printing, dip-pen nanolithography, and solid-state polymerization among others. In this thesis, we propose a new bottom-up nanofabrication approach by combining molecular self-assembly with atomic force microscopy (AFM), …
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Vision based iterative learning control for a roll to roll micro/nano-manufacturing system
… a particular focus is placed on integrating the Electrohydrodynamic-Jet (E-Jet) printing system to the R2R system environment. Regardless of the micro/nano-manufacturing processes that are employed, the presence of hybrid stepping/scanning motions, both continuous and start/stop motions, should …
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Photonic crystal enhancement and tuning of quantum dot emission
… PC is fabricated with embedded QDs in which electrohydrodynamic jet printing is used to control the position of the quantum dots within the device structure. This results in significantly less waste of the QD material and the targeted placement of the quantum dots minimizes any emission …
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Fluorescence resonance energy transfer study of the global folding of functional DNAs and electrohydrodynamic printing of protein arrays
… based on the structure-switching principle. Electrohydrodynamic jet (E-jet) printing is applied to the protein microarray field. With the development of multi-nozzle printing system, both single-protein array and multiple-protein arrays are successfully demonstrated. Several proteins, such as …
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Quantum dot polymer composite materials for light management in optoelectronic devices
… including spin-coating, drop casting and electrohydrodynamic jet printing. The polymer surface has been incorporated with nano-sized features to create photonic crystal structure. Up to 8 times QD excitation and emission enhancement have been demonstrated. We have also designed and …
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Manufacturing all-polymer laminar flow-based fuel cells
… laminar flow-based fuel cells (LFFCs) and (ii) electrohydrodynamic-jet (e-jet) printing. Most LFFCs presented to date have been proof-of-concept unit cells that are not commercially viable for portable electronic applications. Transitioning from proof-of-concept, single-channel cells to a …
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Advanced techniques for chemical gradient, eutectic metal, and crystallized polymer film additive manufacturing
… and manufacture devices in novel ways. First, E-jet printing is used to manufacture chemical gradients in a hydrogel. A chemical gradient acts like a sort of chemically specific attractor that collects analyte in a specified regions. Although these devices have been made using a pipette before, …