고성능 신축 전도성 실버나노와이어 하이드록시에틸셀룰로오스 필름

Abstract

Stretchable Electronic devices have received much attention because they have the potential to be used in medical and wearable devices. Flexible and stretchable electronics that can be attached to curved and dynamic surfaces such as human skin and robotic skin can be utilized in a wide range of areas such as personal health, fitness tracking, and electronic skin because they can continuously monitor physiological and environmental signals. Herein, a silver nanowire coated cellulose biopolymer film is presented as a stretchable transparent electrode. 11-AA (11-aminodecanoic acid) was used as an organic surface modifier to improve the interface adhesion between the silver nanowires and the cellulose substrates. The surface-modified silver nanowire/hydroxyethylcellulose transparent electrode showed a transmittance of 77.2% at a wavelength of 550 nm with a sheet resistance of 170.7/sq. In addition, we manufactured wearable strain sensors based on these stretchable transparent electrodes. The stretchable strain sensors were mechanically robust and highly stretchable up to 400% in tensile strain. Furthermore, it exhibited excellent suitability for skin and curved surfaces and o utstanding resilience from deformation to initial state. With these advantages, it is expected that our films developed here contribute to the development of stretchable electronic devices for next-generation wearable health care monitoring systems.