TY - JOUR
T1 - Controlled Fragmentation of Single-Atom-Thick Polycrystalline Graphene
AU - Chen, Ming
AU - Wang, Zhixun
AU - Ge, Xin
AU - Wang, Zhe
AU - Fujisawa, Kazunori
AU - Xia, Juan
AU - Zeng, Qingsheng
AU - Li, Kaiwei
AU - Zhang, Ting
AU - Zhang, Qichong
AU - Chen, Mengxiao
AU - Zhang, Nan
AU - Wu, Tingting
AU - Ma, Shaoyang
AU - Gu, Guoqiang
AU - Shen, Zexiang
AU - Liu, Linbo
AU - Liu, Zheng
AU - Terrones, Mauricio
AU - Wei, Lei
N1 - Publisher Copyright:
© 2019 Elsevier Inc.
PY - 2020/3/4
Y1 - 2020/3/4
N2 - Controlling the fragmentation of atomically thin and brittle materials is of critical importance for both fundamental interest and technical purposes in fracture mechanics. However, the fragmentation of graphene is often random and uncontrollable because of the presence of grain boundaries and numerous defects. Here, by harnessing the strong localized strain during the necking process of thermoplastic polymers, we introduce a simple yet controllable method to tear apart a monolayer polycrystalline graphene (MPG) sheet into ordered graphene ribbons. More importantly, we show that the presence of active edges helps the graphene ribbons in exhibiting a field-effect characteristic pH response and improves the introduction of dopants. Furthermore, we demonstrate an optically transparent (∼98%), ultrathin (∼70 ± 15 nm), and skin-conformal pressure sensor for real-time tactile sensing. We believe that our results lead to further understanding of the fracture mechanics of graphene and offer unique advantages for practical applications, such as flexible electronics, chemical sensing, and biosensing.
AB - Controlling the fragmentation of atomically thin and brittle materials is of critical importance for both fundamental interest and technical purposes in fracture mechanics. However, the fragmentation of graphene is often random and uncontrollable because of the presence of grain boundaries and numerous defects. Here, by harnessing the strong localized strain during the necking process of thermoplastic polymers, we introduce a simple yet controllable method to tear apart a monolayer polycrystalline graphene (MPG) sheet into ordered graphene ribbons. More importantly, we show that the presence of active edges helps the graphene ribbons in exhibiting a field-effect characteristic pH response and improves the introduction of dopants. Furthermore, we demonstrate an optically transparent (∼98%), ultrathin (∼70 ± 15 nm), and skin-conformal pressure sensor for real-time tactile sensing. We believe that our results lead to further understanding of the fracture mechanics of graphene and offer unique advantages for practical applications, such as flexible electronics, chemical sensing, and biosensing.
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U2 - 10.1016/j.matt.2019.11.004
DO - 10.1016/j.matt.2019.11.004
M3 - Article
AN - SCOPUS:85080087672
SN - 2590-2393
VL - 2
SP - 666
EP - 679
JO - Matter
JF - Matter
IS - 3
ER -