Article Title
Interconnected graphene/polymer micro-tube piping composites for liquid sensing
Authors
Tingting Yang, School of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Materials Processing Technology of MOE, Tsinghua University, Beijing 100084, China
Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
Hongze Zhang, National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing 100871, China
Yan Wang, Department of Physics, and Nanoscience and Nanotechnology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang 330031, China
Xiao Li, School of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Materials Processing Technology of MOE, Tsinghua University, Beijing 100084, China
Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
Kunlin Wang, School of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Materials Processing Technology of MOE, Tsinghua University, Beijing 100084, China
Jinquan Wei, School of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Materials Processing Technology of MOE, Tsinghua University, Beijing 100084, China
Dehai Wu, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
Zhihong Li, Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing 100871, China
Hongwei Zhu, School of Materials Science and Engineering, State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Materials Processing Technology of MOE, Tsinghua University, Beijing 100084, China
Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China
Keywords
liquid sensing, graphene, micro-tube piping, flexible devices, high sensitivity
Abstract
Detection and analysis of volatile organic compounds (VOCs) as pollutants in the atmosphere and liquids are of great significance because of the detrimental effects of VOCs. A polymer-coated graphene micro-tube piping (GMP) structure with a cross-linked and interconnected channel network was synthesized for liquid sensing. By virtue of their unique cross-linked and interconnected channel network configuration, polycrystalline conformation, and the support of a polymer layer, the resistivity of the 3D hollow micro-tubing GMPs was sensitive to strain, ensuring high sensitivity of the liquid sensor (R/R0 of ~4 × 103% for pure acetone and R/R0 of ~105% for 0.01 wt.% acetone solution). Due to the capillary force, the interfaces of the 3D structures can speed up the penetration of solvents into the polymer, thus promote distinct selectivity within seconds and significantly decrease the response time. Owing to their good selectivity, high sensitivity, rapid response and flexibility, and the ease of use of the sensors and the simplicity of the fabrication processes, the GMP/polymer composites should be a good candidate for liquid sensing.
Graphical Abstract
Publisher
Tsinghua University Press
Recommended Citation
Tingting Yang,Hongze Zhang,Yan Wang,Xiao Li,Kunlin Wang,Jinquan Wei,Dehai Wu,Zhihong Li,Hongwei Zhu, Interconnected graphene/polymer micro-tube piping composites for liquid sensing. NanoRes.2014, 7(6): 869–876
