DOI: 10.1016/j.scib.2020.02.020
论文题名: Flexible conductive Ag nanowire/cellulose nanofibril hybrid nanopaper for strain and temperature sensing applications
作者: Yin R. ; Yang S. ; Li Q. ; Zhang S. ; Liu H. ; Han J. ; Liu C. ; Shen C.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期: 11 起始页码: 899
结束页码: 908
语种: 英语
中文关键词: Ag nanowire
; Cellulose nanofibril
; Nanopaper
; Strain
; Temperature sensor
英文关键词: Blending
; Cellulose
; Motion sensors
; Nanofibers
; Nanowires
; Silver
; Strain
; Temperature sensors
; Wearable sensors
; Ag nanowires
; Electrically conductive
; Homogeneous dispersions
; Nanofibril
; Nanopaper
; Strain and temperature sensing
; Tension and compression
; Thermoplastic polyurethanes
; Tensile strain
; Behavior
; Bending
; Cellulose
; Detection
; Mixing
; Sensors
; Silver
; Temperature
英文摘要: With the rapid development of smart wearable devices, flexible and biodegradable sensors are in urgent needs. In this study, “green” electrically conductive Ag nanowire (AgNW)/cellulose nanofiber (CNF) hybrid nanopaper was fabricated to prepare flexible sensors using the facial solution blending and vacuum filtration technique. The amphiphilic property of cellulose is beneficial for the homogeneous dispersion of AgNW to construct effective electrically conductive networks. Two different types of strain sensors were designed to study their applications in strain sensing. One was the tensile strain sensor where the hybrid nanopaper was sandwiched between two thermoplastic polyurethane (TPU) films through hot compression, and special micro-crack structure was constructed through the pre-strain process to enhance the sensitivity. Interestingly, typical pre-strain dependent strain sensing behavior was observed due to different crack densities constructed under different pre-strains. As a result, it exhibited an ultralow detection limit as low as 0.2%, good reproducibility under different strains and excellent stability and durability during 500 cycles (1% strain, 0.5 mm/min). The other was the bending strain sensor where the hybrid nanopaper was adhered onto TPU film, showing stable and recoverable linearly sensing behavior towards two different bending modes (tension and compression). Importantly, the bending sensor displayed great potential for human motion and physiological signal detection. Furthermore, the hybrid nanopaper also exhibited stable and reproducible negative temperature sensing behavior when it was served as a temperature sensor. This study provides a guideline for fabricating flexible and biodegradable sensors. © 2020 Science China Press Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170130
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, 450002, China; China Astronaut Research and Training Center, Beijing, 100094, China; Technology Development Center for Polymer Processing Engineering, Guangdong Colleges and Universities, Guangdong Industry Technical College, Guangzhou, 510641, China
Recommended Citation:
Yin R.,Yang S.,Li Q.,et al. Flexible conductive Ag nanowire/cellulose nanofibril hybrid nanopaper for strain and temperature sensing applications[J]. Science Bulletin,2020-01-01,65(11)