Topic
Smart material
About: Smart material is a research topic. Over the lifetime, 3704 publications have been published within this topic receiving 74280 citations. The topic is also known as: intelligent material & responsive material.
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TL;DR: In this paper, the authors look for more efficient materials that can respond to specific stimuli and retain the original shape Electroactive polymers are such materials and they have been shown to be more efficient than other materials.
Abstract: Newfangled smart materials have inspired the researchers to look for more efficient materials that can respond to specific stimuli and retain the original shape Electroactive polymers are such mat
45 citations
TL;DR: This work analyzes another specific property of magnetorheological elastomers which is the piezoresistivity, and shows an exponential dependence of the resistivity versus pressure and in the second case a power law dependence.
Abstract: Magnetorheological elastomers are smart materials made by aligning magnetic microparticles inside a liquid polymer before the curing process has started. Once cured, the composite presents new properties such as a large change of elasticity when applying a magnetic field. We analyze here another specific property of these materials which is the piezoresistivity. Two cases are studied: one where the particles inside the matrix are not in contact and the other where they are in contact. We show that in the first case we observe an exponential dependence of the resistivity versus pressure and in the second case a power law dependence. These behaviors are explained with the help of a conductivity model based on the dependence of the tunnel effect on the area of contact.
45 citations
Dissertation•
01 Jan 1999
TL;DR: In this article, a model and a control methodology for a thin magnetostrictive rod actuator is proposed for real-time control purposes, which can be used for producing large displacements with mechanical rectification.
Abstract: : In this dissertation, we propose a model and formulate a control methodology for a thin magnetostrictive rod actuator. The goal is to obtain a bulk, low dimensional model that can be used for real-time control purposes. Previous and concurrent research in the modeling of magnetostrictive actuators and the related area of electrostrictive actuators have produced models that are of low order and reproduce their quasi-static response reasonably well. But the main interest in using these and other smart actuators is at a high frequency - for producing large displacements with mechanical rectification, producing sonar signals etc. The well known limitation of smart actuators that are based on electro-magnetothermo-elastic behaviors of smart materials is the complex, input-rate dependent, hysteretic behavior of the latter.
45 citations
TL;DR: In this article, a simple and environmentally friendly strategy for preparing superwettable materials with pH-responsive has been proposed, which can be reversibly switched between superhydrophobicity-superoleophilicity and super hydrophilicity-underwater superoleophobicity according to different pH solutions, which is obtained by monomer polymerization.
45 citations
TL;DR: Shape memory polymers are smart materials characterized by a recoverability memory effect and a large strain this paper, but their mechanical properties such as low stiffness need to be improved for mechanica.
Abstract: Shape memory polymers are smart materials characterized by a recoverability memory effect and a large strain, but their mechanical properties such as low stiffness need to be improved for mechanica...
45 citations