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随着计算机技术、通信技术与传感技术之间的深度渗透以及智能终端设备的日益普及,为可穿戴式传感器的研究提供了有力的技术支撑和广阔的市场前景,其应用领域涉及体育[1]、游戏[2]、医疗[3]和科研[4-5]等。具备触觉感知功能的可穿戴电子设备是当今的研究热点之一,触觉作为人体最大的感官系统,在信息交互和传感认知过程中具有重要的作用[6-8]。将触觉传感器集成于可穿戴设备实现对用户生理参数检测并快速、准确地做出健康评估,亦或是智能机器人通过穿戴这类柔性电子仿生皮肤可以更加灵活、全面地完成人机交互[9-10]。
触觉力感知为触觉传感器范畴中最常见的一种,为克服以硅基体或光电式等触觉力传感器存在柔性差、不易穿戴等缺点,填充型高分子柔性导电复合材料,尤其碳系填料,因具备加工性好、工艺简单、电阻率易于调节等优点在柔性电子仿生皮肤研究中得到广泛应用。炭黑具有价格低廉及良好的力学特性,碳纳米管因较大的长径比呈现较低的渗流阈值,被应用于力敏复合材料研究中。为进一步提升力敏传感器的穿戴舒适度和力学特性,本文将形状和尺寸各异的炭黑/碳纳米管两相填料并用填充硅橡胶(CB/CNTs/SR)制备力敏复合材料,提出了一种表面具有微圆顶阵列结构特点的柔性、可穿戴触觉传感器。
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