Programmable patterned MoS2 film by direct laser writing for health-related signals monitoring

• DOI: 10.1016/j.isci.2021.103313
• Publication Date: 2021-10-19T12:58:54Z
• Authors: Manzhang Xu; Jiuwei Gao; Juncai Song; Hanxin Wang; Lu Zheng; Yuan Wei; Yongmin He; Xuewen Wang; Wei Huang
• Keywords: Flexible Electronics; Wearable Technology; Gauge factor

The two-dimensional (2D) transition metal dichalcogenides (TMDs) are promising flexible electronic materials for strategic information devices. Large-area and high-quality patterned were usually required by electronics due to the limitation from process of manufacturing integration. However, synthesis large-area 2D TMDs with high quality is difficult. Here, an efficient powerful pulsed laser has been developed synthesize wafer-scale MoS2. strain sensor was fabricated using MoS2 showed performance low detection limit (0.09%), gauge factor (1,118), stability (1,000 cycles). Besides, we demonstrated its applications in real-time monitoring health-related physiological signals such as radial artery pressure, respiratory rate, vocal cord vibration. Our findings suggest that laser-assisted method effective capable synthesizing TMDs, which opens new opportunities next devices wearable health monitoring.