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 20 of 72 for “"Roll to Roll"”.
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Commercial assessment of roll to roll manufacturing of electronic displays
… limits the range of applications and markets into which it is currently economically feasible to adopt displays. Roll-to-roll manufacturing has been identified by the display industry as a new and fundamentally different manufacturing paradigm that has the potential to significantly reduce the …
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Vision based iterative learning control for a roll to roll micro/nano-manufacturing system
Nano and micro-manufacturing has emerged to be an essential component to progress in many areas of science and has huge potential to foster innovation and economic growth. Recent advances in micro/nano-manufacturing have transitioned from batch modes of fabrication on the traditionally rigid …
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Design and manufacturing of high precision roll-to-roll multilayer printing machine -- machine upgrade
… of MIT Master of Engineering students built a roll to roll machine for printing thiol onto a flexible gold substrate by self-assembly. The machine demonstrated good performance in high speed printing (400 ft/min). Since single layer printing is limited in industrial application, we reconfigured …
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Fabrication and qualification of arbitrarily patterned seamless tooling for continuous roll-to-roll microcontact printing
… is form of soft lithography utilizing an elastomeric stamp with a molded relief pattern to print features on substrates through ink transfer at micron and nanometer scales. This is a low-cost technique when compared with other printing and patterning processes. Traditional microcontact …
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Design and development of a roll-to-roll machine for continuous high-speed microcontact printing
… advantages over traditional techniques like photolithography include lower cost, ability to pattern on non-planar surfaces, and compatibility with a variety of materials. Low production rates are one of the major limitations, as the process remains primarily a lab-scale technique at this point. …
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Precision control of cylindrical stamp contact in a continuous roll-to-roll microcontact printing machine
… form of soft lithography that uses a molded elastomeric stamp to print patterns with micron and sub-micron scale features. This is an effective low-cost technique for replicating master patterns onto substrates. However, the traditional embodiment of using a planar stamp with a planar substrate …
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Ultrasonic inspection methods for defect detection and process control in roll-to-roll flexible electronics manufacturing
Roll-to-roll flexible electronics manufacturing technologies require new sensing and measurement capabilities for defect detection and process control. This body of work investigates the use of ultrasound, specifically Lamb and longitudinal waves, as a sensing modality and measurement technique for …
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Design and manufacturing of high precision roll-to-roll multi-layer printing machine : measurement and experiment
In 2008, a prototype machine demonstrating the application of roll-to-roll technology in micro-contact printing was developed. In this research, the prototype machine was upgraded by designing and machining a device that could fabricate a flat stamp with significantly less variance. The print roll …
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De-wrinkling of cellulosic barrier materials coated on paper during scale-up on a roll-to-roll system
… is crucial in safeguarding and facilitating the storage and transportation of diverse consumer goods, including food, medical supplies, pharmaceuticals, electronics, and textiles. With the growing emphasis on sustainability and the demand for renewable resources, paper has gained prominence due to …
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Design and development of high precision elastomeric-stamp wrapping system for roll-to-roll multi-layer microcontact printing
… in the electronics industry. High-speed roll-to-roll equipment was built at Nano Terra, Inc in 2008, for microcontact printing. However, the equipment was a proof-of-concept, capable of single-layer printing, while the industry requires a multi-layer printing capability. In addition, the …
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Integrated hardware, software, and sensor design for control of a scalable, continuous roll-to-roll microcontact printing process
… from inexpensive, fully flexible electronics to higher efficiency batteries and improved water purification systems. Microcontact printing ([mu]CP), a particular form of soft lithography, scales the rubber stamp concept down to the micron range. Past work has demonstrated sub-nanometer …
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Design and development of high precision five-axis positioning system for roll-to-roll multi-layer microcontact printing
Microcontact printing is based on the use of elastomeric stamps to transfer ink onto a substrate taking advantage of the self-assembly process. Features as small as 300nm can be easily printed over an extended area. The accuracy and the speed of the process make it suitable for many industrial …
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Development of an inking system for continuous roll-to-roll microcontact printing of hexadecanethiol (HDT) on gold-coated PET
… lithography that employs a molded polymer stamp to print substrates with pattern features as small as the sub-micron range. This is traditionally a plate-to-plate printing process, employing both flat stamps and flat, rigid substrates. However, to utilize this patterning technique in a truly low …
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A direct-write thick-film lithography process for multi-parameter control of tooling in continuous roll-to-roll microcontact printing
Roll-to-roll (R2R) microcontact printing ([mu]CP) aims to transform micron-precision soft lithography in a continuous, large-scale, high-throughput process for large-area surface patterning, flexible electronics and engineered meta-surfaces. Efforts to implement this hybrid process have been …
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In-process measurement of micro-contact printing
… a polymer stamp with sub micron features is use to pattern a substrate. Micro contact printing has many applications including micro machined circuits and miniaturized biological test kits. Success in printing has been achieved in limited batch processing of plate to plate printing. The physics …
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Design and analysis of high-speed continuous micro-contact printing
… that prints directly off a patterned elastomeric stamp by transferring only a molecular monolayer of ink to a surface, providing a low-cost, high resolution and widely applicable method of nano-scale patterning. Roll to roll is recognized as one of the most promising models for high volume …
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Analysis of the capabilities of continuous high-speed microcontact printing
Microcontact printing uses elastomeric stamps to transfer ink onto a substrate by the process of self-assembly. It has the capability to print features as small as 200nm over large areas. Because of this it has many potential industrial applications in areas such as the manufacture of flexible …
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High Speed Instrumentation for Inspection of transparent parts
… (MEMS, polymer hot-embossing, polymer roll-to-roll imprint, etc.) precise micro and nano-sized features are distributed over large areas. In order to inspect for defects or employ statistical process control on micromanufactured parts, metrological instruments must collect data with …
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Technology and applications of 2D materials in micro- and macroscale electronics
… electronics has truly revolutionized our lives. Today, many everyday objects rely on electronic circuitry from gadgets such as wireless earbuds, smartphones and laptops to larger devices like household appliances and cars. However, the size range of electronic devices is still rather limited from …
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Advanced techniques for chemical gradient, eutectic metal, and crystallized polymer film additive manufacturing
… three advanced manufacturing techniques used to print materials 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 …
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