期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 9, 页码 10902-10907出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c01377
关键词
laser-induced graphene; high resolution; flexible sensor; visible laser
资金
- U.S. Department of Energy (DOE) [DE-SC0002136]
- Air Force Office of Scientific Research [FA9550-19-1-0296]
Laser-induced graphene (LIG) is a multifunctional graphene foam that is commonly direct-written with an infrared laser into a carbon-based precursor material. Here, a visible 405 nm laser is used to directly convert polyimide into LIG. This enabled the formation of LIG with a spatial resolution of similar to 12 mu m and a thickness of <5 mu m. The spatial resolution enabled by the relatively smaller focused spot size of the 405 nm laser represents a >60% reduction in LIG feature sizes reported in prior publications. This process occurs in situ in an SEM chamber, thus allowing direct observation of LIG formation. The reduced size of the LIG features enables the direct-write formation of flexible electronics that are not visible to the unaided eye. A humidity sensor is demonstrated which could detect human breath with a response time of 250 ms. With the growing interest in LIG for flexible electronics and sensors, finer features can greatly expand its utility.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据