Recent developments in selective laser processes for wearable devices

Abstract

Recently, the increasing interest in wearable technology for personal healthcare and smart virtual/augmented reality applications has led to the development of facile fabrication methods. Lasers have long been used to develop original solutions to such challenging technological problems due to their remote, sterile, rapid, and site-selective processing of materials. In this review, recent developments in relevant laser processes are summarized under two separate categories. First, transformative approaches, such as for laser-induced graphene, are introduced. In addition to design optimization and the alteration of a native substrate, the latest advances under a transformative approach now enable more complex material compositions and multilayer device configurations through the simultaneous transformation of heterogeneous precursors, or the sequential addition of functional layers coupled with other electronic elements. In addition, the more conventional laser techniques, such as ablation, sintering, and synthesis, can still be used to enhance the functionality of an entire system through the expansion of applicable materials and the adoption of new mechanisms. Later, various wearable device components developed through the corresponding laser processes are discussed, with an emphasis on chemical/physical sensors and energy devices. In addition, special attention is given to applications that use multiple laser sources or processes, which lay the foundation for the all-laser fabrication of wearable devices. [GRAPHICS] .

对于个人医疗保健的可穿戴技术和智能虚拟/增强现实应用兴趣的不断增加，促使了简便制造方法的发展。激光因其远程、无菌、快速和对材料选择性加工的特性，长期以来被用于解决这些具有挑战性的技术问题。本综述将相关激光工艺的最新发展总结为两类。首先，介绍了激光诱导石墨烯等变革性方法。除了设计优化和改变基底材料外，变革性方法的最新进展现在能够通过同时转化异质前驱体或顺序添加与其他电子元件结合的功能层，去实现更复杂的材料组成和多层设备配置。此外，更传统的激光技术，如消融、烧结和合成，仍然可以用于通过扩大适用材料范围和采用新机制来增强整个系统的功能。接下来，讨论了通过相应激光工艺开发的可穿戴设备组件，其中重点讨论了化学/物理传感器和能源设备。此外，特别关注了使用多个激光源或工艺的应用，这些应用为全激光制造可穿戴设备奠定了基础。