Academic literature on the topic 'Hygromorphic'

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Journal articles on the topic "Hygromorphic"

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Birch, Emily, Ben Bridgens, Meng Zhang, and Martyn Dade-Robertson. "Bacterial Spore-Based Hygromorphs: A Novel Active Material with Potential for Architectural Applications." Sustainability 13, no. 7 (April 5, 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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Tamaru, Juntaro, Toshiya Yui, and Tomoko Hashida. "Autonomously Moving Pine-Cone Robots: Using Pine Cones as Natural Hygromorphic Actuators and as Components of Mechanisms." Artificial Life 26, no. 1 (April 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, and Graham Farmer. "Hygromorphic materials for sustainable responsive architecture." Construction and Building Materials 98 (November 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, and Daeyeon Lee. "Bioinspired Hygromorphic Actuator Exhibiting Controlled Locomotion." ACS Macro Letters 2, no. 11 (October 11, 2013): 960–65. http://dx.doi.org/10.1021/mz400439a.

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Alexander, S. L. M., S. Ahmadmehrabi, and L. T. J. Korley. "Programming shape and tailoring transport: advancing hygromorphic bilayers with aligned nanofibers." Soft Matter 13, no. 33 (2017): 5589–96. http://dx.doi.org/10.1039/c7sm00962c.

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

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Grönquist, Philippe, Prijanthy Panchadcharam, Dylan Wood, Achim Menges, Markus Rüggeberg, and Falk K. Wittel. "Computational analysis of hygromorphic self-shaping wood gridshell structures." Royal Society Open Science 7, no. 7 (July 2020): 192210. http://dx.doi.org/10.1098/rsos.192210.

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Bi-layered composites capable of self-shaping are of increasing relevance to science and engineering. They can be made out of anisotropic materials that are responsive to changes in a state variable, e.g. wood, which swells and shrinks by changes in moisture. When extensive bending is desired, such bilayers are usually designed as cross-ply structures. However, the nature of cross-ply laminates tends to prevent changes of the Gaussian curvature so that a plate-like geometry of the composite will be partly restricted from shaping. Therefore, an effective approach for maximizing bending is to keep the composite in a narrow strip configuration so that Gaussian curvature can remain constant during shaping. This represents a fundamental limitation for many applications where self-shaped double-curved structures could be beneficial, e.g. in timber architecture. In this study, we propose to achieve double-curvature by gridshell configurations of narrow self-shaping wood bilayer strips. Using numerical mechanical simulations, we investigate a parametric phase-space of shaping. Our results show that double curvature can be achieved and that the change in Gaussian curvature is dependent on the system’s geometry. Furthermore, we discuss a novel architectural application potential in the form of self-erecting timber gridshells.
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Pelliccia, Giulia, Giorgio Baldinelli, Fabio Bianconi, Marco Filippucci, Marco Fioravanti, Giacomo Goli, Antonella Rotili, and Marco Togni. "Characterisation of wood hygromorphic panels for relative humidity passive control." Journal of Building Engineering 32 (November 2020): 101829. http://dx.doi.org/10.1016/j.jobe.2020.101829.

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Taccola, Silvia, Francesco Greco, Edoardo Sinibaldi, Alessio Mondini, Barbara Mazzolai, and Virgilio Mattoli. "Toward a New Generation of Electrically Controllable Hygromorphic Soft Actuators." Advanced Materials 27, no. 10 (January 2, 2015): 1668–75. http://dx.doi.org/10.1002/adma.201404772.

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Jesús, Inés Sastre-De. "Estudios preliminares sobre comunidades de briofitas en troncos en descomposición en el bosque subtropical lluvioso de Puerto Rico." Bryophyte Diversity and Evolution 6, no. 1 (December 31, 1992): 181–91. http://dx.doi.org/10.11646/bde.6.1.21.

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The bryophyte communities growing on decaying logs in the subtropical wet forests of Puerto Rico are described. Logs were classified according to presence or absence of bark and wood texture. Logs with bark are dominated by members of the Lejeuneaceae and Calymperaceae. In softwood logs, Taxithelium planum and Isopterygium tenerum were abundant. It is suggested in a preliminary manner that due to low fluctuation of water content in heavily decayed logs, hygromorphic bryophytes are favored.
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Dissertations / Theses on the topic "Hygromorphic"

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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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Book chapters on the topic "Hygromorphic"

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Whatmore, Reece, Emelia Keely, Zoe Lee, Adriane Minori, and 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, and 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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El-Dabaa, Rana, Sherif Abdelmohsen, and 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, and 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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Ibrahim, Aly, Sherif Abdelmohsen, Akram Zayan, and 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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Yao, Lining, and 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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Conference papers on the topic "Hygromorphic"

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Walters, Kathryn, Laura Devendorf, and 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, and 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, and 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, and 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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