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Coupling of mechanical deformation and electromagnetic fields in biological cells
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TLDR
In this paper , the authors report on several major advances in elucidating the physics of biological matter and survey new challenges pertinent to cellular biomechanics, and present a review of some of the major advances.Abstract:
A distinctive characteristic of the biological cell is its ability to mechanically deform to crawl or squeeze through trapped spaces. When a cell is taken apart, the structural deformation of its cellular components as biological matter can be manipulated by electrical and magnetic fields. Their response to the external fields opens an opportunity for biomedical intervention of controlling the movement of a cell. The understanding of the coupling between the mechanical deformation and the nonlinear electromagnetic behavior, however, requires the formulation of electrostatics and continuum mechanics in elastic material. This review reports on several major advances in elucidating the physics of biological matter and surveys new challenges pertinent to cellular biomechanics. read more
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Dynamic snap-through instability and damped oscillation of a flat arch of hard magneto-active elastomers
TL;DR: In this paper , the authors investigated the dynamic responses of a hard magneto-active arch (HMAA) under three forms of external magnetic fields and showed that the HMAA could achieve a dynamic snap-through instability at a magnitude of 63 Gs.
Posted Content
A tutorial on the stability and bifurcation analysis of the electromechanical behaviour of soft materials
TL;DR: The aim of the article is to use simple examples and gently lead a reader, unfamiliar with either stability analysis or electrostatics of deformable media, to develop the ability to understand the pertinent literature that already exists and position them to embark on the state-of-the-art research on this topic.
Journal ArticleDOI
Theory of hard magnetic soft materials to create magnetoelectricity
TL;DR: In this article , a nonlinear theoretical framework is proposed to understand the emergent magnetoelectric effect in soft materials and to design novel structures and devices with tailored functionality based on programmable hard magnetic soft materials with embedded immobile electric charges.
Journal ArticleDOI
Viscoelastic effects on the nonlinear oscillations of hard-magnetic soft actuators
TL;DR: In this paper , an analytical dynamic model of a planar hard-magnetic soft actuator concerning the viscoelasticity of hard magneto-active materials is presented.
Journal ArticleDOI
A Tutorial on the Stability and Bifurcation Analysis of the Electromechanical Behaviour of Soft Materials
TL;DR: In this paper , the authors provide a tutorial on the basics of stability and bifurcation analysis in the context of soft electromechanical materials, such as liquids, polymers, foams, gels, colloids, granular materials, and most soft biological materials.
References
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Journal ArticleDOI
A quantitative description of membrane current and its application to conduction and excitation in nerve
A. L. Hodgkin,A. F. Huxley +1 more
TL;DR: This article concludes a series of papers concerned with the flow of electric current through the surface membrane of a giant nerve fibre by putting them into mathematical form and showing that they will account for conduction and excitation in quantitative terms.
Journal ArticleDOI
The Structure of the Potassium Channel: Molecular Basis of K+ Conduction and Selectivity
Declan A. Doyle,João H.Morais Cabral,Richard A. Pfuetzner,Anling Kuo,Jacqueline M. Gulbis,Steven L. Cohen,Brian T. Chait,Roderick MacKinnon +7 more
TL;DR: The architecture of the pore establishes the physical principles underlying selective K+ conduction, which promotes ion conduction by exploiting electrostatic repulsive forces to overcome attractive forces between K+ ions and the selectivity filter.
Journal ArticleDOI
Elastic Properties of Lipid Bilayers: Theory and Possible Experiments
TL;DR: A theory of the elasticity of lipid bilayers is proposed and it is argued that in the case of vesicles (= closed bilayer films) the only elasticity controlling nonspherical shapes is that of curvature.
Book
Electromechanics of Particles
TL;DR: In this paper, a detailed account of the electromechanical interactions that govern the behaviour of small particles when an electric or magnetic field is present is presented, with numerous real-world examples.
Journal ArticleDOI
X-ray structure of a voltage-dependent K+ channel
Youxing Jiang,Alice Lee,Jiayun Chen,Vanessa Ruta,Martine Cadene,Brian T. Chait,Roderick MacKinnon +6 more
TL;DR: The structure of KvAP, a voltage-dependent K+ channel from Aeropyrum pernix, is presented and a crystal structure of the full-length channel at a resolution of 3.2 Å is determined, which suggests that the voltage-sensor paddles move in response to membrane voltage changes, carrying their positive charge across the membrane.