Details

Autor(en) / Beteiligte

• Cai, Yichen
• Shen, Jie
• Fu, Jui-Han
• Qaiser, Nadeem
• Chen, Cailing
• Tseng, Chien-Chih
• Hakami, Mariam
• Yang, Zheng
• Yen, Hung-Ju
• Dong, Xiaochen
• Li, Lain-Jong
• Han, Yu
• Tung, Vincent

Titel

Graphdiyne-Based Nanofilms for Compliant On-Skin Sensing

Ist Teil von

• ACS nano, 2022-10, Vol.16 (10), p.16677-16689

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2022

Quelle

MEDLINE

Beschreibungen/Notizen

• Thin-film electronics pliably laminated onto the epidermis for noninvasive, specific, and multifunctional sensing are ideal wearable systems for health monitoring and information technologies. However, it remains a critical challenge to fabricate ultrathin and compliant skin-like sensors with high imperceptibility and sensitivities. Here we report a design of conductive hydrogen-substituted graphdiyne (HsGDY) nanofilms with conjugated porous structure and inherent softness for on-skin sensors that allow minimization of stress and discomfort with wear. Dominated by the subtle deformation-induced changes in the interdomain tunneling conductance, the engineered HsGDY sensors show continuous and accurate results. Real-time noninvasive spatial mapping of dynamic/static strains in both tensile/compressive directions monitors various body motions with high sensitivity (GF ∼22.6, under 2% strain), fast response (∼60 ms), and long-term durability (∼5000 cycles). Moreover, such devices can dynamically distinguish between the temperature difference and frequency of air inhaled and exhaled through the nostril, revealing a quantitative assessment of the movement/health of the human body. The proof-of-concept strategy provides an alternative route for the design of next-generation wearable organic bioelectronics with multiple electronic functionalities.