Transparent Flexible Polymer Actuator with Enhanced Output Force Enabled by Conductive Nanowires Interlayer,Advanced Materials Technologies

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Transparent Flexible Polymer Actuator with Enhanced Output Force Enabled by Conductive Nanowires Interlayer
Advanced Materials Technologies ( IF 6.4 ) Pub Date : 2019-11-13 , DOI: 10.1002/admt.201900762
Tony Hiu Tung Fook _{1,

2} , Jin Han Jeon ₂ , Pooi See Lee ₁

Affiliation

In this work, an approach to enhance the output force of polymer actuators by increasing the dielectric permittivity of the electroactive polymer (EAP), poly(vinylidene fluoride‐trifluoroethylene‐chlorotrifluoroethylene) (P(VDF‐TrFE‐CTFE)), via incorporation of a nanowire interlayer into the polymer matrix is presented. The interlayer is formed by a network of highly conductive silver nanowires with high aspect ratio. Due to the enhanced dielectric properties, the output force of the resultant composite actuator is double that of a neat EAP actuator. This advantage can be utilized to improve user perception of tactile feedback produced by the modified EAP actuator. The higher output force translates to a lower excitation voltage which is 60% of what is required to excite a neat EAP actuator. The resultant‐modified EAP maintains its transparency and flexibility, while enhancing the dielectric properties without severe degradation of the electrical breakdown strength. The excellent transparency and flexibility of the modified EAP allows for a wider range of possible applications such as direct and localized haptic feedback on flexible electronic displays, touch screens, etc.

中文翻译：

导电纳米线中间层可增强输出力的透明柔性聚合物执行器

在这项工作中，通过引入电活性聚合物（EAP），聚（偏二氟乙烯-三氟乙烯-氯三氟乙烯）（P（VDF-TrFE-CTFE））的介电常数来提高聚合物执行器输出力的方法提出了进入聚合物基质的纳米线中间层。中间层由具有高纵横比的高导电性银纳米线网络形成。由于增强的介电性能，所得复合致动器的输出力是纯EAP致动器的输出力的两倍。可以利用该优点来改善用户对由修改的EAP致动器产生的触觉反馈的感知。较高的输出力转换为较低的励磁电压，该励磁电压是激发纯净EAP致动器所需电压的60％。改性后的EAP保持了其透明度和柔韧性，同时增强了介电性能，而不会导致电击穿强度的严重降低。修改后的EAP具有出色的透明度和灵活性，可实现更广泛的应用，例如在柔性电子显示器，触摸屏等上的直接和局部触觉反馈。

更新日期：2020-01-13

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