光学精密工程2023，Vol.31Issue(22)：3279-3288,10.DOI:10.37188/OPE.20233122.3279
柔性湿度传感器低温直写制备
Low-temperature direct writing fabrication of flexible humidity sensors
摘要
Abstract
The low-temperature,high-bonding direct writing of three-dimensional conductive structures poses a challenge to the manufacturing of flexible electronic composite devices.Based on the silver-ammo-nia complexation mechanism,a particle-free direct writing solution suitable for forming three-dimensional conductive structures has been developed in this study.The problem of metal particle aggregation was overcome,achieving long-term stability.Under low-temperature sintering conditions at 50 ℃,the conduc-tive fibers prepared using the silver-ammonia complex solution exhibit excellent conductivity,with resis-tance as low as 365 Ω/mm,surpassing those made with silver nanoparticle solutions.The fiber structures produced using the silver-ammonia complex solution have strong adhesion to flexible substrates and pos-sess good self-stacking characteristics.By adjusting the number of fiber stacking layers from 10 to 50,the resistance of the conductive fibers can be controlled within the 6.7-34.1 Ω/mm range.A humidity sensor designed based on the silver-ammonia complex solution was tested in different saturated salt solutions to es-tablish humidity environments.The sensor demonstrated excellent humidity responsiveness,with hystere-sis as low as 3.2%,and exhibited ideal real-time response even under high humidity conditions.The parti-cle-free direct writing solution holds promising prospects in the fabrication of flexible electronic products and finds wide applications in fields such as motion detection and health management.关键词
电纺直写/银氨络合/低温烧结/湿度传感器Key words
electrohydrodynamic direct writing/silver ammonia complexation/low temperature sinter-ing/humidity sensor分类
计算机与自动化引用本文复制引用
康国毅,钟易晟,姜佳昕,杜贤若,郑高峰..柔性湿度传感器低温直写制备[J].光学精密工程,2023,31(22):3279-3288,10.基金项目
国家自然科学基金资助项目(No.52275575) （No.52275575）
省部共建精密电子制造技术与装备国家重点实验室开放课题(No.JMD22021019) （No.JMD22021019）
厦门市自然科学基金(No.3502Z202372051) （No.3502Z202372051）
