ABSTRACT

One common issue when implementing wearable strain sensors for health-monitoring is the limited service time when they are inevitably subjected to mechanical operation in practical applications. Therefore, integrating multi-functionality with reliable performance is a long-term pursing target. To this end, we have developed a promising strain sensor utilising a facile 3D printing technology of digital light processing (DLP), thereby simultaneously realising super-high stretchability and intrinsic self-healing ability. Owing to the incorporation of carboxyl multi-walled carbon nanotubes (c-CNTs), the over-curing of the N-acryloylmorpholine (ACMO) resin was adequately mitigated, and good electrical conductivity of the nanocomposite was obtained. On the basis of multi-functionality, the strain sensor before and after self-healing can be applied for real-time and accurate detection of human activities. Therefore, it is expected that the highly stretchable and intrinsically self-healing strain sensor will have promising applications in wearable electronics, personal health care, etc.

摘要

在实现可穿戴式应变传感器进行健康监测时，一个普遍的问题是在实际应用中不可避免地要进行机械操作时，其使用寿命有限。因此，将多功能性与可靠的性能相集成是长期的追求目标。为此，我们利用数字光处理（DLP）的便捷3D打印技术开发了一种很有前途的应变传感器，从而同时实现了超高拉伸性和固有的自我修复能力。由于引入了羧基多壁碳纳米管（c-CNT），N-丙烯酰基吗啉（ACMO）树脂的过度固化得到了充分缓解，并且纳米复合材料具有良好的导电性。在多功能的基础上，自我修复前后的应变传感器可用于实时，准确地检测人体活动。因此，可以预见的是，高度可拉伸且本质上自我修复的应变传感器将在可穿戴电子产品，个人保健等领域具有广阔的应用前景。