With the rapid development of flexible electronics, low-cost, flexible, high-energy-density power sources are urgently needed. Theoretically, the emerging rechargeable potassium-ion batteries (KIBs) ...could be a promising candidate due to the abundance and low cost of potassium resources. However, owing to the absence of high-performance cathode materials and effective methods to fabricate robust and soft electrodes, producing flexible KIBs remains a daunting challenge. Herein, cyanotype is successfully employed as a photographic printing technique for the fabrication of a low-cost, scalable, and flexible cathode. The combined advantages of optimized crystallinity and morphology of the cathode materials as well as the ultralight and robust nature of the flexible electrode endow the KIB with superior performance including high energy density (up to 232 Wh kg−1) and excellent flexibility. This low-cost and scalable photographic printing technique as well as the promising electrochemical results will promote the development of flexible electronics.
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•Develop a cheap, simple and controllable way to synthesize highly crystalline PB•Build a novel photographic printing strategy to fabricate patterned electrode•Design a flexible potassium-ion battery based on the patterned electrode
Flexible electronic devices are leading the trend of next-generation electronic products. Theoretically, the emerging rechargeable potassium-ion batteries (KIBs) could be a promising power source to function them due to the abundance and low cost of potassium resources. However, owing to the absence of high-performance cathode materials and effective methods to fabricate robust and soft electrodes, producing flexible KIBs remains a daunting challenge. Here, we employ a novel photographic printing strategy to fabricate flexible Prussian blue (PB) electrodes by the photoinduced synthesis of highly crystalline PB nanocubes grown onto Xuan paper. Based on the flexible PB electrode, highly flexible KIBs with excellent mechanical strength and superior electrochemical performance are successfully achieved. Our study develops a novel photographic printing flexible electrode and would promote the development of flexible energy storage systems.
Inspired by traditional cyanotype, we first design a novel strategy for the fabrication of low-cost, lightweight, and soft patterned electrodes. When employed in flexible potassium-ion battery, the patterned electrodes show superior electrochemical performance, including good cycling stability and high energy density. This appealing photographic printing technique as well as the promising electrochemical results opens a new avenue for the fabrication of flexible energy storage systems.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
Abstract Cyanotypes are known to de-colourize with alkalis; however, not much research has been done to regain the lost information. This research examines two possibilities to bring back the ...information: one is to utilize elemental mapping by X-ray fluorescence spectroscopy analysis to regain the image non-invasively, and the second, to treat the cyanotype with acidic solutions. Both methods brought back the image to the extent that the information could be obtained. As photo reproductions, one of their greatest values is the information they convey. This research could be significant in that it opens possibilities to regain the lost information.
El proceso fotoquímico conocido como cianotipia es uno de los medios de obtención de imágenes fotográficas más sencillos y a la vez más sugerentes que existen. Tras ser descubierta en la primera ...mitad del siglo XIX y ser utilizada ampliamente en el siglo XX para realizar copias de planos arquitectónicos ahora, en el siglo XXI y tras la popularización masiva de la imagen digital, parecía condenada a desaparecer. Sin embargo, las nuevas tecnologías han abierto nuevos caminos, por ejemplo, posibilitado creaciones híbridas (mediante la elaboración de negativos digitales para la obtención de cianotipos) o favoreciendo la difusión tanto de estas creaciones como de manuales técnicos a través de la red. Actualmente la cianotipia es un recurso utilizado en distintos ámbitos; junto a las aplicaciones pedagógicas o terapéuticas podemos encontrar unos significativos resultados artísticos en distintas partes del mundo, España entre ellas. Todas estas cuestiones son abordadas en el presente artículo
Over the past few decades, the photographic process has slowly vanished from chemistry education in most schools. It happened due to vast changes in both technology and legislation. It is, however, ...helpful in demonstrating several concepts in natural sciences, bringing a bit of art into the subjects, and giving students an opportunity to express themselves while learning. The attractiveness of experiments may play a role in developing a positive attitude toward the subjects. Therefore, a photography-aimed laboratory experiment for elementary and high school education has been proposed. The cyanotype process was chosen due to its obvious advantagesit does not require extensive preparation or equipment and is easily administered even with elementary school pupils. A series of cyanotype workshops has been introduced in Slovak elementary and high schools with generally positive student response.
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5.
Conciencia solar Macas Paredes, José Luis; Castro Jorquera, Carolina
INDEX Revista de Arte Contemporáneo,
05/2024, Volume:
10, Issue:
17
Journal Article
Peer reviewed
Open access
Existe en Latinoamérica, entre un cierto grupo de artistas, una profunda conciencia del sol. José Luis Macas Paredes es uno de ellos. En su obra, esto que juntos hemos denominado “conciencia solar”, ...se manifiesta como una sensibilidad aguda hacia los ciclos solares, los movimientos de la luz y la sombra, y su impacto en la geografía y las culturas andinas. Es una forma de percepción que reconoce la importancia del sol como una fuerza vital que moldea la realidad física y simbólica de un lugar, y en su caso específico, ha moldeado desde su origen la urbanidad de la ciudad de Quito en Ecuador. A lo largo de esta conversación, Jose Luis nos lleva a través de su experiencia personal a partir de caminatas, fotografía y dibujo en cianotipia, a reconsiderar la relación entre lo que él llama la urbandinidad y la luz solar ecuatorial.
Blueprinting a poetics of materiality Hofsess, Brooke A.
International journal of education through art,
03/2018, Volume:
14, Issue:
1
Journal Article
Peer reviewed
How might positioning artistic practice as reflective limit the production of knowledge in art education by positioning theory ahead of practice, language over material, who above what? And, what ...might be done instead? Blueprinting theories with preservice art teachers illuminates such
questions and explores 'what is possible to see and say' differently in art teacher preparation. Emboldened by contemporary materialisms, this visual essay exposes the poetic tangle where preservice teachers may have already pencilled in and sketched out some tentative ways of
knowing/being/doing art education. The vibrant intra-activity of cyanotype photography attempts to eclipse this insistent hold on artmaking as reflective practice - just long enough that something different might be seen, said, felt, imagined in art teacher preparation.
Artificial vision applied to manufacturing process Ruiz Rosas, Víctor Elberto; Forero Casallas, John Alejandro; Hurtado Cortés, Luini Leonardo
Visión Electrónica,
01/2021, Volume:
15, Issue:
1
Journal Article
Peer reviewed
Open access
This article presents the results of the implementation of artificial vision and image processing projects applied to a parts manufacturing process. In a first scenario, three-dimensional ...computational geometric models of the parts to be manufactured were obtained from the capture and processing of thermo-graphic images. In a later stage of the manufacturing process, a direct measurement system for cutting tool wear was implemented using HD images with image processing software using NI Lab VIEW from National Instruments®. In the final stage of parts manufacturing, the development of software (UDmetaL Handbook) for the quantitative metallographic analysis of micrographs for hypoeutectoid steels is presented. The software determines the type of steel based on the percentage of carbon and finds the mechanical properties of the material in a database that is incorporated into the software. The software's basis of operation is computational analysis through digital processing of metallographic images obtained through experimental laboratory processes using NI Lab VIEW software from National Instruments®.
Luminancias Cartagena, María Fernanda
INDEX Revista de Arte Contemporáneo,
04/2023
15
Journal Article
Peer reviewed
Open access
Texto curatorial de la última muestra individual del artista contemporáneo Jose Luis Macas Paredes presentada en la galería de arte N24 en Quito, Ecuador. La sostenida investigación-acción del ...artista en y desde la pacha o tiempo-espacio andino continúa en dos series concebidas para el espacio de la galería: Luminancias y Achikyakushuyu (Dibujos de sol y agua). De la primera serie se analiza la restitución de gráficas y patrones precolombinos relacionados a la astronomía y a la luz como elemento activador. Las dinámicas composiciones también retoman el legado del neoconcreto brasilero. La segunda serie, integrada por dibujos en cianotipia, remite a la sincronía del artista con elementos vitales del mundo andino como son la agencia del sol y del agua. La exhibición se presentó en el marco del Kolla Raymi – Equinoccio de septiembre, festividad que honra al ciclo lunar, a las aguas, y a la fertilidad de la Pacha Mama.
The thing about the creative process is showing up. You have to show up for yourself, whether it's to a physical space, or to a space in yourself, because the creative energy is always there.
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Resumen Este artículo comprende una propuesta didáctica basada en una técnica fotográfica que tuvo su máximo auge en el siglo XIX, denominada Cianotipia y que en la actualidad está siendo recuperada ...por diversos artistas, quienes consideran que esta técnica abre nuevas vías de expresión artística. Dicha propuesta responde a la demanda de encontrar diferentes recursos en el ámbito de la educación artística, que propicien la creatividad y fomenten el respecto por la naturaleza y el reciclaje por parte de los alumnos, sumergidos en la vorágine de las nuevas tecnologías. El bajo índice de toxicidad de esta técnica, al no ser necesario revelador o fijador en su proceso, hacen de esta técnica el procedimiento perfecto para ser aplicado en diferentes contextos, especialmente en todas las etapas de la Enseñanza Secundaria Obligatoria. Abstract This article includes a didactic proposal based on a photographic techniquethat boompeaked in the nineteenth century, called cyanotype which currently isbeing recovered by various artists, who believe that this opens up new ways of artisticexpression. This proposal responds to the demand to find many different resourcesin the field of art education that will foster creativity, respect for natureand recycling by students, immersed in the maelstrom of new technologies. The lowtoxicity of this technique, not being necessary developer or fixer in its process,makes it the most perfect procedure to be applied in different contexts, especiallyin all stages of secondary education.
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