Results 231 to 240 of about 497,594 (265)
Electrostatic-Capacitive MEMS Stiffness Sensor with Position-Feedback Mechanism
2021 IEEE Sensors, 2021 A Micro Electro-Mechanical System (MEMS) stiffness sensor based on position-feedback mechanism which integrates a capacitive position sensor and a variable-area electrostatic actuator mechanically connected to a movable probe tip is presented. A closed-loop mechanism allows to electrically set the working position of the probe tip and to measure the ...
Alessandro Nastro, Vittorio Ferrari
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A resonant micro accelerometer based on electrostatic stiffness variation
Meccanica, 2013 A new out-of-plane resonant micro-machined accelerometer has been designed, modelled and fabricated. The sensing principle is based on the variation of the electrostatic stiffness of two torsional resonators mechanically coupled with an inertial proof mass.
Alberto Corigliano +2 more
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Stiffness Measurement of Micro-Cantilever Based on Negative Electrostatic Stiffness
Nanoscience and Nanotechnology Letters, 2020Micro-cantilever is basic structure of Micro-Electro-Mechanical-Systems (MEMS) sensor, and mechanical stiffness is the most important parameter of micro-cantilever. The mechanical stiffness can be affected by shape, size and material, and it should be experimentally measured for fabrication variation.
Xianshan Dong +4 more
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Electrostatic Layer Jamming Variable Stiffness for Soft Robotics
IEEE/ASME Transactions on Mechatronics, 2019A novel layer jamming variable stiffness technique for soft robotics is proposed in this paper, which we call electrostatic layer jamming (ELJ). The basic principle of the ELJ is using electrostatic attraction to squeeze material layers to generate friction and then engage jamming.
Yue Li, Jun Hong, Jinhua Zhang
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Electrostatic stiffness properties of charged bilayers
Physics Letters A, 1989Abstract We calculate the exact stiffness constants χ, χ: , c0 of mean, Gaussian, and spontaneous curvature for a double layer of surface charges separated by a fixed distance 2d in an electrolyte with finite screening length l0. This extends earlier studies of the limits of very small and very large d/lD.
M. Kiometzis, H. Kleinert
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A variable stiffness dielectric elastomer actuator based on electrostatic chucking
Soft Matter, 2017Dielectric elastomer actuators (DEA) are one type of promising artificial muscle; however, applications of bending-type DEA for robotic end-effectors may be limited by their low stiffness and ability to resist external loads without buckling. Unimorph DEA can produce large out-of-plane deformation suitable for use as robotic end effectors; however ...
Hiroya Imamura +2 more
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Electrostatic Control of Thickness and Stiffness in a Designed Protein Fiber
Journal of the American Chemical Society, 2008Attempts to design peptide-based fibers from first principles test our understanding of protein folding and assembly, and potentially provide routes to new biomaterials. Several groups have presented such designs based on alpha-helical and beta-strand building blocks.
Papapostolou, DT +3 more
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Out-of-plane electrostatic microactuators with tunable stiffness
2010 IEEE 23rd International Conference on Micro Electro Mechanical Systems (MEMS), 2010This paper reports on the development of out-of-plane electrostatic microactuators whose stiffness can be actively tuned through an integrated mechanism based on in-plane forces acting on bending flexures. The devices combine out-of-plane flexures and drives with in-plane flexures and electrodes.
Joao Gaspar +4 more
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A sandwich beam with electrostatically tunable bending stiffness
Smart Materials and Structures, 2006The tuning of the bending stiffness of structural elements is of interest for, among other things, the suppression of vibrations related to resonance phenomena. For a given cross-sectional area and geometry, the variation of the elastic properties of the material composing the structure provides a viable approach to this task. Only very limited options
Bergamini, A. +3 more
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On the stiffness of an electrostatic suspension in liquid
Technical Physics, 2009The stiffness of a spherical electrostatic suspension of a sphere in a liquid is calculated for specific shapes of electrodes. The sizes of the electrodes at which the image force does not influence the stability of the suspension are found.
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