Onion artificial muscles

Chen, Chien-Chun; Shih, Wen‐Pin; Chang, Pei‐Zen; Lai, Hsi‐Mei; Chang, Shing‐Yun; Huang, Pin‐Chun; Jeng, Huai-An

doi:10.1063/1.4917498

Cited by 14 publications

(8 citation statements)

References 21 publications

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“…However, the phase shift for a given Néel skyrmion/domain wall is zero in the Lorentz mode, which results in the absence of magnetic contrast. On the other hand, it is known that the spin--polarized low--energy electron microscopy (SPLEEM) 15,16,35 and spin--polarized scanning tunnelling microscopy (SP--STM) 33 are capable of quantifying all 3--dimensional components of an arbitrary spin texture. However, the sample preparation for these techniques is non--trivial and often these techniques do not work for the ex--situ patterned devices.…”

Section: Perspectivesmentioning

confidence: 99%

Mobile Néel skyrmions at room temperature: status and future

Jiang

Zhang

et al. 2016

AIP Advances

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Section: Perspectivesmentioning

confidence: 99%

Mobile Néel skyrmions at room temperature: status and future

Jiang

Zhang

et al. 2016

AIP Advances

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“…The onion epidermis has emerged as a model in a wide range of studies involving the study of plant tissue and cell mechanics. Studies investigating the effect of enzymes, or polymer interactions in the cell wall network, the tensile behavior of plant material, or bio-inspired design have benefited from the use of onion epidermis (Vanstreels et al 2005;Suslov and Verbelen 2006;Van Sandt et al 2007;Suslov et al 2009;Zamil et al 2013;Chen et al 2015;Kim et al 2015;Zhang et al 2016). A set of desirable properties render the onion epidermis a suitable specimen for such studies.…”

Section: Introductionmentioning

confidence: 99%

Modeling the nonlinear elastic behavior of plant epidermis

Bidhendi

Geitmann

2020

Botany

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Cell growth and organ development in plants are often correlated with the tensile behavior of the primary cell wall. To understand the mechanical behavior of plant material, various mechanical testing techniques have been employed, such as tensile testing of excised tissue samples. The onion (Allium cepa L.) epidermis has emerged as a model system for plant tissue mechanics. In this study, we performed tensile tests on strips of adaxial onion epidermis. While the tissue appeared stiffer in the direction along the major growth axis compared with the transverse direction, the tensile strength of tissue was not significantly different between the two orientations, indicating a nontrivial link between the cell wall and tissue mechanical anisotropy. Importantly, we observed the stress-strain behavior of the onion epidermis under tension to be highly nonlinear. Several hyperelastic models were fitted to the test data to evaluate their capacity to describe the nonlinear deformation of onion epidermis. The Yeoh hyperelastic model could successfully simulate the uniaxial tensile test data. This study suggests that accounting for nonlinearity in the deformation of the primary tissue may be essential for the accurate interpretation of mechanical test data, and a better understanding of the mechanics of the primary plant cell wall.Résumé : La croissance cellulaire et le développement des organes chez les plantes sont souvent corrélés au comportement en traction de la paroi cellulaire primaire. Afin de comprendre le comportement mécanique de la matière végétale, plusieurs tests mécaniques ont été réalisés, tels que l'essai de traction sur des échantillons de tissus excisés. L'épiderme de l'oignon (Allium cepa L.) est apparu comme un système modèle de la mécanique des tissus végétaux. Dans cette étude, les auteurs ont réalisé des essais de traction sur des bandes d'épiderme adaxial de l'oignon. Alors que le tissu semblait plus rigide le long de l'axe principal de croissance comparativement au sens transverse, les forces de traction du tissu n'étaient pas significativement différentes entre les deux orientations, indiquant l'existence d'un lien non négligeable entre la paroi cellulaire et l'anisotropie mécanique du tissu. Fait à noter, ils ont observé que le comportement de contrainte-déformation de l'épiderme de l'oignon placé sous tension était hautement non linéaire. Plusieurs modèles hyperélastiques ont été apposés aux données expérimentales afin d'évaluer leur capacité à décrire la déformation non linéaire de l'épiderme de l'oignon. Le modèle hyperélastique de Yeoh pouvait simuler avec succès les données de l'essai de traction uniaxiale. Cette étude suggère que la prise en compte de la non-linéarité de la déformation du tissu primaire peut être essentielle à l'interprétation exacte des données d'essais mécaniques et à une meilleure compréhension de la mécanique de la paroi cellulaire primaire des plantes. [Traduit par la Rédaction] Mots-clés : épiderme, mécanique des cellules végétales, élasticité non linéaire, hyperélasti...

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“…From a sustainability viewpoint, nowadays there is a tendency to develop actuators using materials from regenerable sources of biological origin, vegetal or animal, such as wood, onion foils, or silk fibroin, a polypeptide isolated directly from Bombyx mori silkworm cocoons. , As examples, actuators in a bilayer or trilayer geometry were fabricated by coating silk fibroin with PPy film through chemical polymerization or electropolymerization demonstrating the potential of the biopolymer scaffold as component in an actuating system. Eggshell membrane (ESM) is another natural material which is also one of the ubiquitous wastes of our daily life.…”

Section: Introductionmentioning

confidence: 99%

Versatile Actuators Based on Polypyrrole-Coated Metalized Eggshell Membranes

Beregoi

Preda

Evanghelidis

et al. 2018

ACS Sustainable Chem. Eng.

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Eggshell membranes were employed as biological scaffolds for developing soft and versatile actuators. A particular architecture, consisting of eggshell membrane coated with polypyrrole, has been fabricated and has been found to be a green, inexpensive, lightweight, and easy to handle class of actuators. The polypyrrole-coated eggshell membrane devices were tested in liquid, ambient atmosphere and controlled humidity environment, with the recorded movements proving their versatility. In 1 M NaCl aqueous solution, by applying successive potential pulses, the actuator contracts/expands owing to the expulsion/insertion of the electrolyte ions out/into polypyrrole film, producing a displacement of ∼0.1 cm. In air, upon application of voltages from 2 to 5 V on a V-shaped geometry actuator, it bends due to water desorption from its structure induced by Joule heating, generating a displacement which reaches ∼0.4 cm at 5 V. In a chamber with controlled humidity, the decrease of humidity stimulates a bending/curling motion of the actuator, achieving a displacement of ∼2.1 cm at 50% relative humidity. Upon modification of the humidity, these actuators move, hold, and release delicate and lightweight objects. Such polypyrrole-coated eggshell membrane actuators which operate in different environments and respond to multiple stimuli can have potential applications in biomimetic micromanipulators or artificial muscle fields.

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Onion artificial muscles

Cited by 14 publications

References 21 publications

Mobile Néel skyrmions at room temperature: status and future

Mobile Néel skyrmions at room temperature: status and future

Modeling the nonlinear elastic behavior of plant epidermis

Versatile Actuators Based on Polypyrrole-Coated Metalized Eggshell Membranes

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