Laser-scribed conductive, photoactive transition metal oxide on soft elastomers for Janus on-skin electronics and soft actuators.
Laser-scribed conductive, photoactive transition metal oxide on soft elastomers for Janus on-skin electronics and soft actuators.
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DOI：
10.1126/sciadv.abp9734
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发表时间：
2022-06-24
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影响因子：
13.6
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中科院分区：
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激光辅助在柔性衬底上制备导电材料因其简单、易于定制和广泛的应用而引起了人们的极大兴趣。然而，在组织状软弹性体上实现导电材料的激光划片仍然具有挑战性，这可以作为构建生物电子学和软致动器的基础。在这里，我们报告了在环境条件下，在涂有氯化钼前驱体的软弹性体上进行金属导电、光活性过渡金属氧化物(二氧化钼)的激光划片。激光刻划二氧化钼(LSM)具有高导电性、生物相容性、化学稳定性以及与磁共振成像的兼容性。此外，LSM还可以在各种基材(聚酰亚胺、玻璃和头发)上制作，具有很高的通用性。此外，基于LSM的Janus On-Skin电子设备被开发用于记录来自人类皮肤、人类呼吸和环境的信息。利用其出色的光热效应，基于LSM的软驱动器被开发用于构建光驱动可重构的三维结构、可重塑的气流传感器和带有生物电子传感器的智能机器人蠕虫。可以在软弹性体上直接激光划片二氧化钼，以制造Janus可穿戴设备和可重塑设备。
Laser-assisted fabrication of conductive materials on flexible substrates has attracted intense interests because of its simplicity, easy customization, and broad applications. However, it remains challenging to achieve laser scribing of conductive materials on tissue-like soft elastomers, which can serve as the basis to construct bioelectronics and soft actuators. Here, we report laser scribing of metallic conductive, photoactive transition metal oxide (molybdenum dioxide) on soft elastomers, coated with molybdenum chloride precursors, under ambient conditions. Laser-scribed molybdenum dioxide (LSM) exhibits high electrical conductivity, biocompatibility, chemical stability, and compatibility with magnetic resonance imaging. In addition, LSM can be made on various substrates (polyimide, glass, and hair), showing high generality. Furthermore, LSM-based Janus on-skin electronics are developed to record information from human skin, human breath, and environments. Taking advantage of its outstanding photothermal effect, LSM-based soft actuators are developed to build light-driven reconfigurable three-dimensional architectures, reshapable airflow sensors, and smart robotic worms with bioelectronic sensors. Direct laser scribing of molybdenum dioxide is enabled on soft elastomers to build Janus wearables and reshapable devices.
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