Electroactive polymer actuators and sensors
Electroactive polymer actuators and sensors
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DOI：
10.1557/mrs2008.42
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发表时间：
2008-03-01
期刊：
影响因子：
5
通讯作者：
Zhang, Qiming
中科院分区：
文献类型：
--
作者：
Bar-Cohen, Yoseph;Zhang, Qiming
聚合物因其固有的机械弹性、重量轻和易于加工等特性而极具吸引力。此外，一些聚合物在电刺激下表现出巨大的性能变化，远远超过无机材料所能达到的水平。这为它们的潜在应用增加了显著的好处。本期MRS公报的焦点是机电响应的聚合物，也被称为电活性聚合物(EAP)。这些聚合物以应变和应力响应电场或电流，其中一些聚合物还表现出将机械运动转化为电信号的反向效应。已知的聚合物有许多类型的机电响应，根据其激活机理可分为场激活EAP和离子EAP。本期中的文章涵盖了这两个组中使用的关键材料类型，回顾了驱动它们的机制，并提供了应用和当前挑战的例子。这些材料的最新进展导致了诱导应变和力的改善，以及EAP作为模拟生物系统和传感器的致动器的进一步应用。正如本期所述，这些执行器的使用正在实现令人兴奋的应用，否则这些应用将被认为是不可能的。
Polymers are highly attractive for their inherent properties of mechanical flexibility, light weight, and easy processing. In addition, some polymers exhibit large property changes in response to electrical stimulation, much beyond what is achievable by inorganic materials. This adds significant benefit to their potential applications.The focus of this issue of MRS Bulletin is on polymers that are electromechanically responsive, which are also known as electroactive polymers (EAPs). These polymers respond to electric field or current with strain and stress, and some of them also exhibit the reverse effect of converting mechanical motion to an electrical signal.There are many types of known polymers that respond electromechanically, and they can be divided according to their activation mechanism into field-activated and ionic EAPs. The articles in this issue cover the key material types used in these two groups, review the mechanisms that drive them, and provide examples of applications and current challenges. Recent advances in the development of these materials have led to improvement in the induced strain and force and the further application of EAPs as actuators for mimicking biologic systems and sensors. As described in this issue, the use of these actuators is enabling exciting applications that would be considered impossible otherwise.