Bibliografie tematiche / Hygromorphism

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Letteratura scientifica selezionata sul tema "Hygromorphism"

Autore: Grafiati

Pubblicato: 1 novembre 2024

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Articoli di riviste sul tema "Hygromorphism"

Alexander, Symone L. M., e LaShanda T. J. Korley. "Tunable hygromorphism: structural implications of low molecular weight gels and electrospun nanofibers in bilayer composites". Soft Matter 13, n. 1 (2017): 283–91. http://dx.doi.org/10.1039/c6sm00749j.

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Krapež Tomec, Daša, Aleš Straže, Andreas Haider e Mirko Kariž. "Hygromorphic Response Dynamics of 3D-Printed Wood-PLA Composite Bilayer Actuators". Polymers 13, n. 19 (22 settembre 2021): 3209. http://dx.doi.org/10.3390/polym13193209.

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The use of wood particles in wood-plastic composites (WPC) is well known and similar use could occur in materials for fused deposition modeling (FDM) 3D printing. Wood particles could be one of the possible solutions in the search for natural-based materials to minimize the use of synthetic-origin materials in additive manufacturing. Wood particles for 3D printing filaments can be made from wood waste and could serve as a cheap filler or as a value-added reinforcing component, depending on their properties and incorporation. The disadvantages of wood (dimensional changes due to water adsorption and desorption) could be used as functions when dimensional change is desirable, such as in shape-changing 4D printing materials. In this research, FDM printing materials made of polylactic acid (PLA), with different amounts of wood particles, were used to design moisture-induced shape-changing bilayer actuators, which could serve as a principle for active façade or ventilation valves. The initial research shows that the wood content in the WPC causes dimensional changes and thus shape changes of the designed actuators under changing climates. The shape change depends on the ratio of the materials in the two-layered actuator and the wood content in the wood-PLA composite used, and thus on sorption. The rate of the shape change behaves in the same way: the higher the wood content, the greater the change observed. The dynamics of the hygromorphism of bimaterial composites is greater with a small amount of added hygromechanically active material.

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Birch, Emily, Ben Bridgens, Meng Zhang e Martyn Dade-Robertson. "Bacterial Spore-Based Hygromorphs: A Novel Active Material with Potential for Architectural Applications". Sustainability 13, n. 7 (5 aprile 2021): 4030. http://dx.doi.org/10.3390/su13074030.

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This paper introduces a new active material which responds to changes in environmental humidity. There has been growing interest in active materials which are able to respond to their environment, creating dynamic architectural systems without the need for energy input or complex systems of sensors and actuators. A subset of these materials are hygromorphs, which respond to changes in relative humidity (RH) and wetting through shape change. Here, we introduce a novel hygromorphic material in the context of architectural design, composed of multiple monolayers of microbial spores of Bacillus subtilis and latex sheets. Methods of fabrication and testing for this new material are described, showing that small actuators made from this material demonstrate rapid, reversible and repeatable deflection in response to changes in RH. It is demonstrated that the hygromorphic actuators are able to lift at least 150% of their own mass. Investigations are also extended to understanding this new biomaterial in terms of meaningful work.

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Lisnichuk, А. M., R. S. Panasenko, L. A. Verykivskyi e R. L. Yavorivskyi. "АВТОХТОННА ТА ІНТРОДУКОВАНА ДЕНДРОФЛОРА КРЕМЕНЕЦЬКОГО БОТАНІЧНОГО САДУ". Scientific Issue Ternopil Volodymyr Hnatiuk National Pedagogical University. Series: Biology 83, n. 3-4 (20 aprile 2024): 8–15. http://dx.doi.org/10.25128/2078-2357.23.3-4.1.

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The results of study of the current state of dendrofloraon the territory of Kremenets Botanical Garden are presented. The taxonomic composition was studied, systematic and botanical-geographical analyzes were carried out, biological and ecological features of woody plants growing and cultivated on the territory of the institution were analyzed. According to the latest inventory, the collection fund includes 318 species and 96 cultivars of woody plants, which belong to 80 genera and are grouped into 44 families. Department Magnoliophyta dominates by the number of families – (39, 88,64 %), genera (68, 85 %) and species (337, 81,40 %). Division Pinophyta is represented by 5 genera (11.36 %), 12 families (15,0 %), 77 species (18,60 %). According to the classification of I. G. Serebriakovthe collection is dominated by trees (51,21 %), including: deciduous (44.69 %), evergreen (6.52 %). Among shrubs (45,41 %), deciduous ones (31.40 %) predominate, evergreens make up a small group (14,01 %). Semi-shrubs are represented by semi-evergreen specimens (3,14 %). According to ecological indicators, 3 types of ecomorphs were identified: heliomorphic, hygromorphic, and trophomorphic. According to the degree of adaptation to lighting, heliophytes (238, 72,46 %) predominate in composition of the studied flora, the group of mesotrophs (156 species, 49,06 %) predominates according to the trophic indicator, mesophytes dominate among hygromorphs (287, 90,25 %). Introducers have adapted to local growing conditions and coexist well with native species. In general, natural and climatic conditions are favorable for introduction of woody plants from various floristic regions of the Holarctic. The East Asian, Atlantic-North American and Circumboreal floristic regions are the most represented. In the collections and expositions, the most represented plants are in the range from 5 to 20 years. The staff of the Garden laid plots of the following genera complexes: Сotoneaster (Соtoneaster), Rhododendron (Rhododendron), Magnolia (Magnolia), Spiraea (Spiraea), Pinophyta (Pinophyta), and lilac (Syringa).

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Reyssat, E., e L. Mahadevan. "Hygromorphs: from pine cones to biomimetic bilayers". Journal of The Royal Society Interface 6, n. 39 (luglio 2009): 951–57. http://dx.doi.org/10.1098/rsif.2009.0184.

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We consider natural and artificial hygromorphs, objects that respond to environmental humidity by changing their shape. Using the pine cone as an example that opens when dried and closes when wet, we quantify the geometry, mechanics and dynamics of closure and opening at the cell, tissue and organ levels, building on our prior structural knowledge. A simple scaling theory allows us to quantify the hysteretic dynamics of opening and closing. We also show how simple bilayer hygromorphs of paper and polymer show similar behaviour that can be quantified via a theory which couples fluid transport in a porous medium and evaporative flux to mechanics and geometry. Our work unifies varied observations of natural hygromorphs and suggests interesting biomimetic analogues, which we illustrate using an artificial flower with a controllable blooming and closing response.

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Tamaru, Juntaro, Toshiya Yui e Tomoko Hashida. "Autonomously Moving Pine-Cone Robots: Using Pine Cones as Natural Hygromorphic Actuators and as Components of Mechanisms". Artificial Life 26, n. 1 (aprile 2020): 80–89. http://dx.doi.org/10.1162/artl_a_00310.

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We have developed autonomously moving pine-cone robots, which are made of multiple joined pine-cone scales for outdoor natural environments. We achieved these natural robots by using pine cones as both natural hygromorphic actuators and components of the mechanisms. When they are put in outdoor places where moist periods (e.g., rain) and dry periods repeatedly occur, they can move up and down on the spot or move forward. This article describes the motivation behind our research, the design and implementation of three different hygromorphic actuators, and applications for autonomously moving robots in nature.

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Holstov, Artem, Ben Bridgens e Graham Farmer. "Hygromorphic materials for sustainable responsive architecture". Construction and Building Materials 98 (novembre 2015): 570–82. http://dx.doi.org/10.1016/j.conbuildmat.2015.08.136.

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Lee, Sang-Wook, Jacob H. Prosser, Prashant K. Purohit e Daeyeon Lee. "Bioinspired Hygromorphic Actuator Exhibiting Controlled Locomotion". ACS Macro Letters 2, n. 11 (11 ottobre 2013): 960–65. http://dx.doi.org/10.1021/mz400439a.

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Alexander, S. L. M., S. Ahmadmehrabi e L. T. J. Korley. "Programming shape and tailoring transport: advancing hygromorphic bilayers with aligned nanofibers". Soft Matter 13, n. 33 (2017): 5589–96. http://dx.doi.org/10.1039/c7sm00962c.

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Shrestha, Milan, Zhenbo Lu e Gih-Keong Lau. "High humidity sensing by ‘hygromorphic’ dielectric elastomer actuator". Sensors and Actuators B: Chemical 329 (febbraio 2021): 129268. http://dx.doi.org/10.1016/j.snb.2020.129268.

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Più fonti

Tesi sul tema "Hygromorphism"

Chabaud, Guillaume. "3D and 4D printing of high performance continuous synthetic and natural fibre composites for structural and morphing applications". Thesis, Lorient, 2020. http://www.theses.fr/2020LORIS563.

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L’impression 3D et plus spécifiquement la technique de Fused Filament Fabrication (FFF) de matériaux composites à renforts continus est un domaine d’étude en plein essor visant à pallier les faibles performances mécaniques rencontrées par les composites élaborés en impression 3D et ainsi ouvrir les champs d’applications (aéronautique, course au large…). Autre tendance, l’impression 4D qui permet de développer des matériaux stimulables (capteurs et/ou actionneurs) et d’envisager des structures architecturées complexes se déformant sous l’action de divers stimuli (humidité, électricité, température, pression…). Le travail de thèse s’inscrit dans ce contexte pluriel et vise à développer de nouveaux matériaux multifonctionnels par impression 3D et 4D. Dans un premier temps, le travail de thèse a pour objectif scientifique de comprendre les relations entre le procédé, la microstructure induite, les performances mécaniques et hygro-mécaniques en vue d’applications structurelles (aéronautique, course au large …) sur des matériaux composites renforcés de fibres synthétiques (carbone et verre) et naturelles (lin). La deuxième partie des travaux de thèse vise à développer des matériaux composites hygromorphes renforcés de fibres continues (synthétiques et naturelles) par impression 4D avec une architecture en bilame bio-inspirée de la pomme de pin. Le caractère conducteur des fibres de carbone est utilisé pour développer de nouveaux actionneurs electro- thermo-hygromorphes présentant un actionnement contrôlé et accéléré par rapport aux hygromorphes classiques. Enfin, la liberté de design offerte par l’impression 3D a été utilisée pour contrôler localement la rigidité et l’actionnement d’actionneurs composites renforcés de fibres de lin continues
3D printing and especially Fused Filament Fabrication (FFF) technology for composite materials reinforced by continuous fibers is an emerging research field which aims to enhance the mechanical performance of 3D printing structures and to widen the field of application (aerospace, sailing…). Another trend, 3D printing allows to develop stimulable materials (sensor and/or actuators) and to consider parts with complex architecture that can be deployed under various stimulation (electricity temperature, pressure…). The present work is therefore part of this context and aims to develop new multi-functional materials elaborated by 4D printing. First, the scientific objective of this work is to better understand the relationship between the process, the induced microstructure, mechanical and the hygromechanical performances in order to target structural applications (aeronautic, sailing) for composite materials reinforced with synthetic fibers (carbon and glass) and natural fibers (flax). The second part of this work aimed to develop hygromorphic composites reinforced with continuous fibers (synthetic and natural) by 4D printing with a bioinspired bilayer architecture inspired by the pinecone scale. The conductive behavior of carbon fiber was used to create new electro-thermo-hygromorph actuators with controlled and accelerated actuation compared to conventional hygromorphs. Finally, the design freedom provided by 4D printing made it possible to control the local stiffness and actuation of composite actuators reinforced with continuous flax fiber

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Capitoli di libri sul tema "Hygromorphism"

Whatmore, Reece, Emelia Keely, Zoe Lee, Adriane Minori e Lining Yao. "Bioderived Hygromorphic Twisted Actuator for Untethered Sustainable Systems". In Biomimetic and Biohybrid Systems, 216–28. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-38857-6_17.

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Wood, Dylan, Tiffany Cheng, Yasaman Tahouni e Achim Menges. "Material Programming for Bio-inspired and Bio-based Hygromorphic Building Envelopes". In Advanced Materials in Smart Building Skins for Sustainability, 99–112. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-09695-2_4.

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Ibrahim, Aly, Sherif Abdelmohsen, Akram Zayan e Walid Omar. "Hygromorphs: Exploring Morphologies of Architectural Adaptive Systems Using Hygroscopic Properties of Wood". In Advances in Architecture, Engineering and Technology, 55–66. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-11232-4_5.

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El-Dabaa, Rana, Sherif Abdelmohsen e Yasser Mansour. "Encoding Latent Properties of Hygromorphic-Thermobimetal Composites as a Passive Mechanism for Adaptive Building Skins". In Architecture and Urbanism: A Smart Outlook, 133–45. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-52584-2_10.

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El-Dabaa, Rana, e Sherif Abdelmohsen. "Deriving the Production Rules of Shape-Shifting Grammars for Adaptive Façades: The Case of Hygromorphic Thermo-Bimetal Composites (HMTM)". In Design Computing and Cognition’20, 129–49. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-90625-2_8.

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Yao, Lining, e Hiroshi Ishii. "Hygromorphic living materials for shape changing". In Robotic Systems and Autonomous Platforms, 41–57. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-08-102260-3.00003-2.

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Birch, Emily. "3.2 Figure 1 Investigations into folding and self-assembly Bacterial Hygromorphs". In Bioprotopia, 156–61. De Gruyter, 2023. http://dx.doi.org/10.1515/9783035625806-016.

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Atti di convegni sul tema "Hygromorphism"

Walters, Kathryn, Laura Devendorf e Karin Landahl. "Animated Linen: Using High-twist Hygromorphic Yarn to Produce Interactive Woven Textiles". In DIS '24: Designing Interactive Systems Conference. New York, NY, USA: ACM, 2024. http://dx.doi.org/10.1145/3643834.3662146.

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Vihmar, Marie, e Indrek Must. "Wood-Based Hygromorphic Robots Mastered in Ten Minutes, Fostering Ideation Through Tangible Coding". In 2024 IEEE 7th International Conference on Soft Robotics (RoboSoft). IEEE, 2024. http://dx.doi.org/10.1109/robosoft60065.2024.10521989.

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El-Dabaa, Rana, e Sherif Abdelmohsen. "Effect of infill height design variation of 4D-printed hygromorphic-based louvers on daylight performance". In 2023 Building Simulation Conference. IBPSA, 2023. http://dx.doi.org/10.26868/25222708.2023.1499.

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Tamaru, Juntaro, Toshiya Yui e Tomoko Hashida. "Autonomously Moving Pine Cone Robot: Using Pine Cones as Natural Hygromorphic Actuators and as Components of the Mechanism." In The 2018 Conference on Artificial Life. Cambridge, MA: MIT Press, 2018. http://dx.doi.org/10.1162/isal_a_00114.

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