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 33 for “"contact printing"”.
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Nano-contact printing of DNA monolayers
… devices. To accommodate this development, printing methods are needed. Some printing methods that are used include lithography, micro-contact printing, and inkjet printing. These methods all require specialized instrumentation, hazardous chemicals, and complicated and tedious steps that …
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In-process measurement of micro-contact printing
In 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 …
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Elastomeric contact printing for sub-micron patterning of organic films
In this thesis, a novel diffusion-based contact-printing technology is investigated, by which a wide variety of low molecular weight organic materials can be patterned without added temperature, pressure, or chemical processing, with just the use of relief-patterned polymeric (PDMS) stamps. It is …
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Design and analysis of high-speed continuous micro-contact printing
Micro-contact printing ([mu]CP) is a technology 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 …
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Understanding and developing capabilities for large area and continuous micro contact printing
Micro contact printing is a high spatial resolution-patterning tool that can be used for printing on large and non-planar surfaces because of which it has begun to find important applications in printed organic electronics and fiber optics. However, problems like achieving precise alignment and …
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Design and prototype of an automated system for commercially viable production using micro contact printing
… a fully automated system employing Micro Contact Printing, an emerging technique for replication and pattern transfer using soft organic materials, for a nano technology based company in Cambridge, Massachusetts during the summer of 2006. The thesis takes the reader through an extensive …
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Design and fabrication of a flexible membrane ultrasound transducer
… to fabricate low-cost ultrasound transducers by contact printing. Contact printing was selected because it could be scaled for high-throughput manufacturing, and it could be performed at ambient temperature and pressure. For this thesis, a capacitive microscale ultrasound transducer was …
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Understanding the Structure and Properties of Self-Assembled Monolayers for Interfacial Patterning
… boundaries: the soft lithography method of contact printing and site-selective reductive desorption. The electrochemical properties of homogeneous contact printed monolayers are measured and compared to those of monolayers prepared by solution adsorption. The contact printed monolayers are …
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Design and prototype : a manufacturing system for the soft lithography technique
… of the academia and the industry. Micro contact printing is by far the most widely used soft lithography technique in the industry. The objective of this research project is to design and prototype a micro contact printing machine which could achieve high scalability, feature resolution …
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Micro scalar patterning for printing ultra fine solid lines in flexographic printing process
… focuses on the study of ultra-fine solid lines printing by using Micro-flexographic machine which is combination of flexography and micro-contact printing technique. Flexography is one of the famous and high speed roll to roll printing techniques that are possible to create graphic and …
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Soft Lithographic Patterning on Silicon
… of etched silicon was developed though the printing of mixed monolayers. Contact printing of mixed solutions of different mole fractions of DTS and octyltrichlorosilane (OCTY) were formed monolayers on Si. Once annealed in air, these films were placed into KOH etching solutions and the …
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Sub-20nm substrate patterning using a self-assembled nanocrystal template
… from 2 to 20nm. Spin-casting and micro-contact printing are resolved as methods of forming and depositing these monolayers of quantum dots through self-assembly. Four methods of templated patterning - shadowmasking, lift-off, selective ablation & nano-imprinting - using the quantum dot …
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Manufacturing Strain Sensor Via Printed Electronics Onto 3D Printed Substrates
Inkjet printing is a promising technology with advantages such as digital customization, reduced cost and fabrication time, and non-contact printing. These features enable inkjet printing to fabricate on novel, diverse substrates such as 3D printed substrates. 3D printing technology builds 3D …
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Mechanical and electrical fatigue of aerosol jet printed conductors
Non-contact metallization processes, such as aerosol jet printing, allows for the deposition and novel processing of nanoparticle based conductive circuitry. The primary advantages in the utilization of such methods include the minimization of substrate handling and the exploitation of …
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Microelectromechanical and Microfluidic Systems for Scanning Probe Lithography
… (DPN) mode. Then, development of scanning probe contact printing (SPCP) technology and multifunctional probe arrays has expanded the capability of conventional single-functional SPL and demonstrated an excellent example of a highly integrated scanning probe device for pattern generation in DPN …
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Contact-printed microelectromechanical systems
… The reported fabrication methods employ contact-printing, and avoid fabrication of MEMS diaphragms via wet or deep reactive-ion etching, which in turn removes the need for etch-stops and wafer bonding. Elevated temperature processing is also avoided to enable MEMS fabrication on flexible …
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Polyelectrolyte nanostructures formed in the moving contact line: fabrication, characterization and application
… surfaces by application of the moving contact line approach. It was demonstrated that the morphology of nanostructures displays a range of structure variations from root-like to a single wire structure with a high anisotropy and aspect ratio (providing diameters of several nanometers …
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Micro- and nano-scale polymer-on-polymer stamping of the polyelectrolytes SPS and PDAC
Micro-contact printing has emerged as a promising new technique for patterning micron scale features with a wide variety of materials. Most of the materials examined have been small, reactive molecules patterned on surfaces they are chemically attracted to, like thiols on metals or silanes on glass …
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Bioanalytical applications of microfluidic devices
… a new patterning technique--microfluidic contact printing--that combines several of the desirable aspects of microcontact printing and microfluidic patterning and addresses some of their important limitations through the integration of a track-etched polycarbonate (PCTE) membrane. Using …
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Design and manufacturing of high precision roll-to-roll multi-layer printing machine : measurement and experiment
… 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 wrapping system was reconfigured in order to …
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