Global ETD Search

1	An investigation into the physical aspects of the screen printing process Anderson, John Thomas January 1997 (has links) No description available. 686.2 Printing ; Technique
2	The software ideated plate : towards designing a new relationship of integration between digital technology and the intaglio process Booyens, Johann Grebe January 2014 (has links) Dissertation submitted in partial fulfilment of the requirements for the degree Master of Technology: Graphic Design in the Faculty of Informatics and Design at the Cape Peninsula University of Technology / This study investigates the application and use of the latest graphic design software technologies to help plan and ideate the intaglio printmaking process. This is significant as intaglio is a 600 year old process which has evolved little, if any, in the last few hundred years although it was born from technology. Furthermore, the intaglio process relies on mental visualisation of the final artwork, making the real outcome and the planned outcome dissimilar. Students of intaglio printmaking are often surprised or disappointed by the printed result due to the lack of efficient planning. There are several ways in which software influences the creative process, including enhancing visualisation and communication, premature fixation, circumscribed thinking and bounded ideation. In this research, computer software is used as a simulator to facilitate the planning process in order to minimise the disconnect between visualisation and outcome, and serve as learning instrument. The use of digital computer technologies has been a highly debated issue in printmaking as there exists a rift between printmakers; those who embrace and explore new technologies and those who reject new methods in favour of traditional means. New technologies in printmaking offer exciting opportunities, both innovative and creative, but these new technologies are often seen as alternative or auxiliary methods of printmaking compared to traditional ways. Since these debates have been buried but not necessarily resolved, this study reinvigorates some of these perspectives and seeks a common middle ground. This study does not argue for, or against computer technology, but rather for a third paradigm: technology can coexist with intaglio without compromising the beauty and authenticity of hand processes. Computer technologies, therefore, serve as a facilitator to amplify the traditional intaglio hand process. However, the issue of discussion in this thesis is not hybrid printmaking but rather a hybrid mode of thinking in the printmaking discipline. This iterative design experiment consists of a written dissertation and intaglio printed artworks which inform and complement each other. The theoretical foundation of the art practice is found in the Bauhaus slogan: “Art and technology: a new unity”. Art and technology form the basis of the theory and the theme of entropy – the process of degeneration – is illustrated in the design artefacts. This theme shows process and illustrates the idea of a positive agent: the interference of computer in intaglio to instil new energy and value not only to keep it alive, but position it as an important skill necessary for growth in the knowledge-based economy. Furthermore, this study contributes to the scholarly discussion of design’s conceptual skills (ways of thinking) in order to enhance production capabilities (ways of making). Graphic arts -- Data processing Computer graphics Intaglio printing -- Technique Prints -- Technique
3	Skimmer, trassel, djupt, mörkt, blött Engström Apelmo, Sally January 2023 (has links) Shimmer, Tangle, Deep, Dark, Wet is an exploration of the possibilities of the publication, the underwater world, editorial work and an investigation in different materials. The work includes among other things, a professional mermaid, a marine geologist, three underwater rugby players, and a poem about the waves in the Persian Gulf. / Skimmer, trassel, djupt, mörkt, blött är ett utforskande av publikationens möjligheter, världen under vatten, redaktionellt arbete och ett experimenterande med olika material. Arbetet innehåller bland annat en professionell sjöjungfru, en maringeolog, tre undervattensrugbyspelare och en dikt om vågorna i persiska viken. Graphic design Fanzine Artist book Underwater Water Sea Lake Publication Editorial Aquarium Interview Mermaid Underwater rugby Marine geology Poetry Photography Risograph Printing technique Paper Binding Grafisk design Formgivning Fanzine Artist book Undervatten Vatten Hav Sjö Publikation Redaktionellt Akvarium Intervju Sjöjungfru Undervattensrugby Maringeologi Poesi Fotografi Risografi Utskriftsteknik Papper Bindning Design Design
4	SCALABLE MANUFACTURING OF PRINTED APTASENSORS: DETECTION OF FOODBORNE PATHOGENS AND ENVIRONMENTAL CONTAMINANTS Lixby Susana Diaz (8464110) 21 June 2022 (has links) <p>The development of low-cost, and reliable platforms for on-site detection of pathogenic agents, and toxic environmental traces is still a critical need for real-time monitoring of potential environmental pollution and imminent outbreaks. The biosensors market is projected to attain 31.5 billion by 2024. In this landscape, colorimetric and electrochemical devices continue to have significant relevance, with paper-based platforms leading the point-of-care (POC) segment for pathogen detection and environmental monitoring.</p> <p>Despite the true potential of biosensors in general, they have witnessed a slow rate in commercialization, mainly due to cost restrictions, and concerns related to their reliability and repeatability once scaled-up. This research evaluates the implementation of printing techniques as a strong approach for the fabrication of paper-based and flexible electrochemical biosensors. The results obtained demonstrated the ability to control and predict the variables affecting the sensing performance, achieving high precision of the printing parameters, and allowing optimization, and iterations since very early stages of prototype development.</p> <p>Besides the novel fabrication approach, this work introduces the use of truncated aptameric DNA sequences for whole cell detection of E. coli O157:H7 and heavy metals (Hg2+ and As3+), providing evidence of high stability and robustness under harsh conditions. Results obtained demonstrate their equal or even superior performance when compared to antibodies.</p> <p>We established the use of aptamer-functionalized multilayered label particles (PEI-grafted gold decorated polystyrene) with high stability as label particles. These particles address the well known drawback of non-selective aggregation typical of traditional naked Gold nanoparticles. The outstanding stability of these multilayered labels was demonstrated when used in an enhanced version of the lateral flow assay for detection of E. coli O157:H7 (state of the art for paper-based colorimetric detection of whole cell bacteria), and in a multiplexed paper-based microfluidic device for dual detection of Mercury and Arsenic. This work sets the foundation of the development of a next generation of health care and environmental monitoring devices that are portable, sensitive, quantitative, and can reliably detect multiple targets with one single test.</p> Aptasensors biosensors devices printing technique-assisted method printing arrays DNA Aptamers Heavy Metal Ions Foodborne Pathogens Surface modification Material properties Materials characterization biofunctional materials SERS optical sensors Colorimetric Sensor Array Electrochemical sensors microfluidic chips Paper-Based Analytical Devices

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